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adventures in second language acquisition – input matters

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“SLA history is not 2,000 years old but almost as old as human history and that throughout this long period, people have acquired rather than learned L2s, considering the rather short history of linguistic sciences.”
– Ellidokuzoglu, IJFLT 2008

So Minna Kirjavainen ended her talk by emphasising the similarities between L1 and L2 learning. It’s a long hard slog, and we all make plenty of embarrassing faux pas along the way. Marjo Mitsutomi then began her elaborations on L2 learning by mentioning in passing the host of theories and approaches to SLA over the past few years – behaviourism, Chomsky’s universal grammar, Krashen’s hypotheses etc – before listing what they all generally agree on, and that is, firstly, that the first stage of L2 is necessarily different from that of L1, due to L1 influence; secondly that L2 learning generally starts later, and the critical period hypothesis might play a role, along with other biological or neurological constraints, and thirdly that there’s generally an issue of ‘interlanguage’, the sort of make-do syntax that’s neither quite L1 or L2.

Mitsutomi then introduced the ‘newest theory’ (and it’s new to me) in the field, chaos theory. As the name suggests, it proposes that language and its acquisition is multi-faceted and enormously complex. She quotes a proponent of the theory, A J van Lier, describing language as a complex adaptive system involving endless and multiform interactions between individual and environment. Another proponent describes it as dynamic, non-linear, adaptive and feedback-sensitive, self-organising and emergent. No doubt each of those terms could be fleshed out at great length, though whether it all amounts to a theory might be questionable. In any case Mitsutoni makes the obviously correct point that there are many many factors, with different loadings for each individual learner, that make SLA a very difficult long-term task. And of course it makes the task of the teacher difficult too, because every learner is in a different place with different issues. Nevertheless Mitsutomi identifies some key concepts:

  • negotiation for meaning – try to get learners to say something original and unrehearsed, to produce language that’s owned by the learner
  • noticing a gap – being aware, as a learner, of the gap between what you want/need to do and what you can do (the next step, which you should be taking in an encouraging environment, with the expectation that mistakes will be made again and again and gently corrected)
  • variables – for the educator, trying to take account of the many variables among learners, such as motivation, anxiety, production experience (many learners come from Asian ‘school English’ backgrounds where their production of English has been very limited, practically non-existent), L1 competence, etc, is a monumental task, and fossilisation is likely to always be a problem
  • rate and type of input, control of learning, and many other internal and external factors contribute to a sense of ‘chaos’ in the class with every learner varying in what they allow in, and what effort they expend.

Control of learning is a key issue Mitsutomi focuses upon, by emphasising how L2 ‘learners’ can control for not learning, in a way that L1 learners can’t, because learning L1 is learning language itself, and without that skill we’d be lost in the human world. So the L2 learner, safely aware of her full humanity as an effective L1 user, can and generally does choose how much effort to put into L2 acquisition.

So how can we motivate them to focus on L2 learning, considering the many distractions they’re dealing with? Mitsutomi  employs a quote from one of the early proposers of chaos theory, Vera Menezes:

… the edge of chaos will be reached if students can get rich input, interact with proficient speakers, and if they can use the second language for social purposes, dealing with different oral, written or digital genres in formal and informal contexts.

So we need to provide learners with rich, stimulating, relevant content in a motivating environment. And the most motivating environment of all is one that’s embodied, that connects with feeling and action. And Mitsutomi emphasises authenticity, the creation of original thoughts in the L2, and the deciphering of meaning in unpredictable contexts – where, again, embodied clues will help.

So what are some examples of embodied teaching? Well one way is to recognise language that’s difficult for students and to see if there’s an embodied way of teaching it, of acting it out. Take the preposition ‘into’. I’ve noticed that EGP and EAPP students almost invariably don’t think of this in tests where prepositions are specifically asked for, they often write ‘in’ and get a half-mark, but ‘into’ is a kind of action preposition, which almost always goes with an action verb, specifically ‘go’ and ‘come’, but also ‘put’, so it’s perfect for a bit of embodied teaching. It’s a word containing two morphemes obviously, and its opposite is two words, ‘out of’, and these opposites might best be taught together. Ask students to take a pencil out of the pencil-case, and then to put the pencil into the case. Go out of the room, through the door, and come into the room, through the door. Ask the students what they’ve just done. Hopefully the actions will reinforce the language. If nothing else, they tend to be more stimulated, more engaged, when combining action with words in this way.

Some expressions used, and often abused, by learners in argument and comparative essays can often benefit from being taught in an embodied way. ‘On the one hand/on the other hand’ is a notorious example. Ask students to put something slightly heavy on one hand, and then to think of something equally heavy that might be put on the other hand to balance the argument. This might work wonders but then again maybe not, no harm in trying. Similar tricks might be tried with ‘furthermore’, ‘moreover’, ‘on balance’ and any terms which have a physical sense of distance or weight or proportion to them. Of course there are limits, and abstract connecting words (conjunctions) such as ‘although’ and ‘whereas’ and their differentiation are fiendishly difficult to illustrate or adequately explain (though we should always try to have explanations handy). Alternatively, we should be actively discouraging the use of these kinds of terms – ‘whereas’ ‘although, ‘despite’, ‘in spite of’, because these are the sorts of terms that L1 users only get a handle on later. You won’t find too many five or six-year-old L1 speakers using them, yet in EAP classes we cram them in, or try to, when learners are still getting a handle on basic grammar and trying to build their basic vocabulary. In most cases ‘whereas’ can be replaced with ‘but’ in a straight swap. Words like ‘despite’ can be avoided through rearranging the sentence, and then only slightly. Let’s look at an example:

Despite having lived in Norway for ten years, he never got used to the cold.

Change to:

He had lived in Norway for ten years but had never got used to the cold.

The word ‘but’ could be replaced with ‘yet’, but using ‘yet’ in this way is also too abstract, and too confusing. Keep it simple – they will learn this through input in their own time. Advice to learners would be to use the simpler conjunctions, unless they’re quite certain about how to use the more abstract ones.

In the last paragraph I slipped in the word input.  This is a key term in second language acquisition, according to the linguist Bill van Patten of Michigan State University.  In this lecture van Patten claims that ‘after four decades of L2 research what has become crystal clear is language in the mind and brain is not built up from practice but from constant and consistent exposure to input’. He goes on to define input as ‘what readers hear or read in a communicative context’. He then makes a further, perhaps shocking claim that this language that they hear or read in these contexts is responded to ‘for its meaning not for its form or structure’. Meaningful input is essential for SLA, – that’s to say for the language to begin to exist inside the learner, as a mental thing, sensed and felt – and practice is not a substitute. Of course this raises issues for teaching, especially as  van Patten argues that role-playing within class is no substitute for real communication where meaning is negotiated. If it’s all about input and meaning, can L2 be taught in a classroom at all?

This raises questions about whether there is a difference between classroom learning and immersive acquisition, or rather (because there’s obviously a difference) whether classroom learning can ever substitute for the immersive circumstances of L1-type learning. In order to explore this further I want to engage with some of the highly influential ideas of Stephen Krashen, who apparently takes a dim view of much conventional second language teaching. Is what we’re doing a complete waste of time, or can we do it better? How should we be doing our job, considering the constraints and the expectations of ‘English for academic purposes’ in which we’re supposed to be transforming relatively low-level English users into potential university essayists in English?

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Written by stewart henderson

February 6, 2017 at 11:33 pm

adventures in second language acquisition – an intro to the usage-based hypothesis of language learning

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don't you just hate it when slide presentations on grammar contain grammar errors

don’t you just hate it when slide presentations on grammar contain grammar errors

So now I’m going to describe and reflect on a rather more interesting video by two academics and teachers, Marjo Mitsutomi, a specialist in SLA, and Minna Kirjavainen, who researches first language acquisition. They’re working in the teaching of English in Osaka, and they’re describing the uni course they’ve just set up there. Kirjavainen, the first speaker, describes her research as being on ‘the acquisition of syntax and morphology in monolingual, typically developing children, from about the ages two to six’. So now for some definitions. How does syntax differ from grammar, and what is morphology? A rough answer is that a grammar involves everything about how a language works, which includes syntax, which is essentially about how words are ordered in sentences. Morphology is often described as the corollary of syntax. Grammar can be divided into syntax, the external economy of words (i.e. in sentences), and morphology, the internal economy of words (i.e. from morphemes). For example, ‘robbed’ contains the verb ‘rob’ plus the unit of meaning ‘-ed’, or ‘-bed’, which means ‘in the past’. But presumably ‘went’ is made up of two morphemes, ‘go’ and ‘in the past’, both of which are in a sense hidden in the word?

Kirjavainen describes herself as coming from the ‘usage-based, constructivist view-point’, and says

‘this means that I don’t assume there’s innate syntactic components in the child’s mind like many first language and second language acquisition researchers do. Instead, the usage-based viewpoint assumes that language exposure and general cognitive processes result in language acquisition in children.’

A slide accompanying this anouncement indicated that Michael Tomasello is one of the major developers of this approach. So I’ll need to familiarise myself with Tomasello’s work, especially as I’m currently reading Steven Pinker’s The language instinct, which appears to be an attempt to popularise Chomsky’s universal grammar theories. Chomsky and Pinker argue that there is something innate about grammar, though just what it is is hard to capture.

Kirjavainen is of the view that a child’s general cognitive processes (e.g. pattern finding, analogy-making and categorisation) together with exposure to language, lead to competent language acquisition. She argues that these processes are effective for non-linguistic tasks, so the same mechanisms are sufficient for decoding the language they hear and want to use. She divides her inquiry into first language acquisition into three questions:

  1. how do children learn to speak their native language?
  2. what kind of things do children pay attention to when they learn their native language?
  3. how do caregivers talk to children? What effect does it have on children’s language development?

Firstly, children pay a lot of attention to language input, and apparently research is starting to show that it’s not just lexical items but grammatical structures that children mirror from caregivers. The most frequently used grammatical structures of caregivers are the ones used earliest by children, and they then become the most used by children. So the ambient language heavily influences the child’s language development. The constructivists also argue that syntactic constructions are built on the language that children already know. So they chunk things together and try them out for effective communication with those around them, they absorb responses and corrections and adjust their language accordingly. Examples are ‘Mummy’, ‘I want mummy’, ‘Mummy do it’ ‘I want mummy do it’, ‘I want mummy to do it’.

All of this makes a lot of sense to me prima facie. Mitsotomi, who next takes up the talk, is of Finnish background like Kirjavainen, but with a more pronounced accent, having learned English later in life. She begins by mentioning the critical period hypothesis for SLA, which might be the subject of a future post. Her concern is in how SLA is affected not only by the towering presence of the learner’s L1, but by many other life experiences. So given these influences and possible constraints how do we create a space and an atmosphere conducive to SLA? Also, what does SLA mean to the identity of learners, and how is it that some acquire an L2 more quickly and effectively than others?

Kirjavainen then continues by introducing what might be seen as the obstacles to a collaboration between first and second language theorists. First, some linguists argue that there are inherent differences between first and second language learning. She lists three (out of many) common assumptions about these differences:

  1. all (typically developing) children learn to speak their L1 natively, whereas most people (with normal cognitive skills) don’t learn their L2 to a native-like standard
  2. children learn their L1 very quickly whereas it takes L2 learners years to master their target language
  3. L1 learners make few errors in comparison to L2 learners, i.e. children find it easier to learn the grammatical rules of their language, whereas L2 learners find it difficult to learn these rules

Kirjavainen questions the first assumption, first on the basis of vocabulary – a child’s L1 vocab will depend on her socio-economic background, the level of education, experience and language competence of those she’s learning from and other such factors. These factors also affect syntax, and she described a study of native speakers’ knowledge of and proficiency in the passive construction. The study compared the proficiency of university teaching staff (academics) with non-teaching staff. They were tested on their understanding of active and passive sentences based on pictures, a fairly easy test, and it was found that while both teaching and non-teaching staff had full understanding of the active constructions, only the academics had full understanding of the passive construction. The non-teaching staff were significantly below full understanding. The general point here is that not all native speakers know all the grammatical rules of their L1, and that it depends more on regular usage than is sometimes admitted.

Next Kirjavainen gets stuck into the claim that children learn their native language quickly. She points out that an average 5 year old is quite a competent L1 user, but far from having adult proficiency. She then does a breakdown of how many hours a day children have spent, up to the age of five, exposed to and using the L1. That’s 5 years@6-14 hours a day of exposure, and about 3.5 years@8-14 hours a day in using the language. Conclusion: it takes children years to reach a relatively high level of L1 proficiency.

All of this strikes me as really thought-provoking stuff, and some of the thoughts provoked in me are memories of my callow youth – for example an occasion when as a 15 year-old or so I found myself at a party full of uni students types, all a few years my senior, and was awed by their vocabulary and language proficiency, and fearful that I’d get roped into conversation and be mocked for my verbal incompetence. So, again, I’m finding Kirjavainen’s arguments persuasive here at first blush.

The third assumption is more or less demolished by Kirjavainen as she cites research by herself and others to show that children make lots of errors, especially between the ages of 18 months and 4 years – these include pronoun errors, omission of infinitival to, agreement errors, subject omissions and verb inflection errors. Even at five and upwards there are mistakes with past tense, relative clauses and complement clause constructions. A complement clause? I’ve only just heard of them, but let me explain.

Here are two examples of complement clauses, taken from Kidd et al, 2007.

(1)  That Rufus was late angered his boss.

(2)  Rufus could see that he had angered his boss.

The complement clauses are underlined. The first here functions as the subject of an ‘argument’ sentence, the second as the object. The second sentence is described as an unmarked case, in which the complementiser that is optional and generally not used in naturalistic speech. There are many other forms of complement clause construction, so I won’t get bogged down by exploring them here.

So this has been an enlightening post for me, and an enlightening view of a new (to me) usage-based constructivist view of language acquisition. Next time I’ll report on the latter part of this talk, which will focus more on the implications for SLA.

just a thought to end with

just a thought to end with

Written by stewart henderson

January 30, 2017 at 3:25 pm

embodied cognition: common sense or something startling? – part two. language and education

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Canto: There isn’t much detail in Lobel’s book about how sensations or the senses can be harnessed to education, but she tantalisingly offers this:

Several studies have shown that peppermint and cinnamon scents improved cognitive performance, including attention and memory; clerical tasks, such as typing speed and alphabetisation; and performance in video games.

Jacinta: Right, so we spray peppermint and cinnamon about the classroom, and genius rises. But is there anything in this approach specifically for language learning?

Canto: Well, a key insight, if you can call it that, of embodied cognition is that not only does the mind influence the body’s movements, but the body influences our thinking. And the relationship can be quite subtle. It’s known from neurophysiological studies that a person’s motor system is activated when they process action verbs, and when they observe the movements of others.

Jacinta: So that’s about mirror neurons?

Canto: Exactly. The basic take-away from this is that activating mirror neurons enhances learning. So as a teacher, combining gestures, or ‘acting out’ with speech to introduce new language, especially verbs, is an effective tool.

Jacinta: Playing charades, so that students embody the activity? This can be done with phrasal verbs, for example, which students often don’t get. Or prepositions. The teacher or students can act them out, or manipulate blocks to show ‘between’ ‘next to’, ‘in front of’, ‘under’, etc. This would be a useful strategy for low-level learning at our college, really engaging the students, but it would also help with higher level students, who are expected to write quite abstract stuff, but often don’t have the physical grounding of the target language, so they often come out with strange locutions which convey a lack of that physical sense of English that native speakers have.

Canto: Yes, they use transition signals and contrast terms wrongly, because they’re still vague as to their meaning. Acting out some of those terms could be quite useful. For example, ‘on the one hand/on the other hand’. You could act this out by balancing something on one hand, and then something of equal weight on the other hand, and speaking of equal weights and balancing in argument, and then getting the students to act this out for themselves, especially those students you know are likely to misconstrue the concept. ‘Furthermore’ could be acted out both by physically adding more to an argument and taking it further in one direction. ‘Moreover’ takes more over to one side. You could use blocks or counters to represent contrast words, a word or counter that shifts the argument to the opposite side, and to represent the additive words, with counters that accumulate the arguments on one side.

Jacinta: So this acting out, and gesturing, all this is very suggestive of the origins of language, which might’ve begun in gestures?

Canto: Yes it’s a very complex communicative system, which may well have begun with a complex gestural system, accompanied by vocalisations. Think of the complexity of signing systems for the deaf – it’s extraordinary how much we can convey through hand gestures accompanied by facial expressions and vocalisations, or even partial vocalisations or pre-vocalisations – lip movements and such. Other primates have complex gestural communisation, and it was in monkeys that mirror neurons were first discovered by neurophysiologists examining inputs into the motor cortex. They are the key to our understanding of the embodied nature of language and communication. When we learn our L1, as children, we learn it largely unconsciously from our parents and those close to us, by copying – and not only copying words, but gestures which accompany words. We absorb the physical framing of the language, the tone in which certain words are conveyed, words and phrases – locutions – associated with physical actions and feelings such as anger, sadness, humour, fear etc, and they fire up or activate neurons in the motor cortex as well as in those centres related to language processing.

Jacinta: I’ve heard, though, that there’s a competing theory about the origin and evolution of language, relating to calls, such as those made by birds and other animals.

Canto: Not just one other. This has been described as the hardest problem in science by some, and I’ve hardly scratched the surface of it, but I recently watched an interview with Giacomo Rizzolatti, whose team discovered mirror neurons in monkeys, and he strongly favours the gestural origin theory, though he also says we need more neurophysiological evidence, for example of mirror neurons in other areas of the brain, or the absence of them, before we decide once and for all. He finds the debate a little ideological at present.

Jacinta: Well the origin of language obviously involves evolution, but there are few traces discoverable from the past. Spoken language leaves no trace. So it’s always going to be highly speculative.

Canto: Well it may not always be, but it long has been that’s for sure. Apparently the Linguistic Society of Paris banned all present and future debate on the origins of language back in 1866, so we could get arrested for this post.

Jacinta: Yeah, a bit hard to enforce that one. So we have no idea about when human language evolved, or did it evolve gradually over hundreds of thousands of years?

Canto: Well, that’s more speculation, but there are continuity theories (language is this extremely complex thing that came together gradually with the accumulation of changes – mutations or brain-wirings – over an extended period), and there are discontinuity theories that favour, for example, a single transformative genetic mutation.

Jacinta: And what about the song theory – that’s one I’ve heard. That song, and therefore music, preceded language. I suppose that’s romantic speculation – right up our alley.

Canto: Okay so this is very interesting and something to follow up in future posts, but we should get back to our main subject, the implications of embodied cognition for language learning today.

Jacinta: Aren’t the implications fairly straightforward – that we learned language, that’s to say our L1 – in a thoroughly embodied way, within a rich sensory and physical context, as highly active kids, and so it’s a battle to get students to learn their L2 or another language, because neurons that fire together wire together, and there’s this thing called brain frugality which makes us always look for short-cuts, so we always want to convert the L2 into the familiar, wired-in L1, rather than trying to grasp the flow of a foreign language. We want to work in the familiar, activated channels of our L1. So, as teachers, we can help students to develop channels for their L2 by teaching in a more embodied way.

Canto: Here’s a thought – I wonder if we can measure teaching techniques for L2 by examining the active brain and the feedback mechanisms operating between cortices as students are being taught? Have we reached that level of sophistication?

Jacinta: I doubt it. It’s an intriguing thought though. But what exactly would we be measuring? How much of the brain is ‘lighting up’? How long it’s remaining lit up? And how would we know if what’s being activated is due to language learning? It could be active avoidance of language learning…

Canto: I need to learn much more about this subject. I’ve heard that you can’t and shouldn’t teach an L2 in the way we learn our L1, but what does that mean? In any case, it’s true that the way we teach, in serried rows, facing the front with too much teacher talk and a general discouragement of talking out of turn and even moving too much, it really does smack of an old dualist conception, with disembodied minds soaking up the new language from the teacher.

Jacinta: Well surely you don’t teach that way any more, shame on you if you do, but there are ways in which a more embodied approach can be used, with role-playing, framing and other forms of contextualising.

Canto: Yes, clearly contextualising and incorporating action, sensation and emotion into language teaching is the key, and getting students to use the language as often as possible, to learn to manipulate it, even if ungrammatically at times and with gestural accompaniment….

Jacinta: So, like learning L1? But we ‘pick up’ our L1, we absorb it like little sponges, together with context and connotation. Is that really how to learn an L2? Is the idea to replace the L1 with a thoroughly embodied L2? Or is it to have two – or more – fully embodied, firing-and-wired transmitting and feedback-looping  language systems alongside each other. What about energy conservation?

Canto: Okay so let this be an introductory post. I clearly need to research and think on this subject a lot more…

the brave new world of neurophenomenology, apparently

the brave new world of neurophenomenology, apparently

 

Written by stewart henderson

January 22, 2017 at 9:50 pm

embodied cognition: common sense or something startling? part one – seeing red

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Canto: So I’ve just read a book that details experiments highlighting the effects of, for example, colour, odour, physical comfort and ’embodied metaphors’ on mood, decision-making and creative thinking…

Jacinta: Embodied metaphors?

Canto: I’ll explain later, or not. What I want to do here is lay the groundwork for a future PD talk on how these findings can improve our educational settings and teaching.

Jacinta: So you’re saying our environment can be manipulated, perhaps, to bring out better results in students?

Canto: Yes, think about it. Will sitting in a soft chair help you to think more creatively or efficiently than sitting in a hard chair? Will standing or walking around improve your thinking? Don’t forget Harry Stottle and the Peripatetics. And can these effects be measured? What about the temperature of the room? The view from the window? Inside or outside?

Jacinta: Okay, so can you give me some solid research data on anything that can improve, say, test scores?

Canto: For a start, don’t ask females to indicate that they’re female on the test booklet when they’re sitting a mathematics test. Their results will be impaired. The very act of writing that they’re female apparently brings to mind the idea that girls can’t do maths. The same has been found with African-Americans and maths. This phenomenon is well known in the literature, and has been called stereotype threat.

Jacinta: Okay, but is this really an example of what you were talking about? I thought it was all about the effect of colour, temperature, lighting etc?

Canto: I’m talking about embodied cognition, or physical intelligence, and yes that research is an example – by getting someone to write their gender before sitting a test, it makes them more aware of their gender; their embodiment is brought to mind. But I’m going to give some quite striking examples of the influence of the colour red on test results. A team of American and German researchers conducted a number of experiments, the first involving 71 American undergrads. Each subject was tested individually. They were told they’d be given an anagram test, in which they had to unscramble sets of letters into words. These were of medium difficulty. After a practice run, the students were randomly divided into three groups. All students were given the same anagram tests on paper, with one difference – each participant was given a number, but with one group, the number was coloured red, with another the colour was green, with the third the colour was black. The number on the top of the paper was called to the subjects’ attention at the beginning of the test, with the excuse that this was necessary for processing. The difference in the test results was striking – those who saw a red number at the top of each page performed significantly worse than the green and black groups.

Jacinta: They saw red, and fell apart? But why would they do that? Has this study been replicated? Maybe the group with the red numbers were just bad at anagrams?

Canto: Good questions, and of course it’s the sort of study that could easily be replicated, but the results are in line with similar studies. Unfortunately I could only read a brief abstract of the original study as the detail is behind a paywall, but all these studies have been written about by Thalma Lobel in her book Sensation: the new science of physical intelligence, and, according to her, this particular study took into consideration the abilities of the groups and made sure that this wasn’t the cause of the difference. Also, the same researchers did a follow-up test in Germany, with altered experimental conditions. Instead of using anagrams they used analogy tests, such as:

legs relate to walk like:

1 tongue to mouth

2. eyes to blink

3. comb to hair

4. nose to face

Jacinta: Right, so the correct answer is 2, though it’s not the best analogy.

Canto: Well, eyes to see might be too easy. Anyway, 46 subjects were given 5 minutes to come up with 20 correct analogies. The analogies were presented on paper, each with a cover page. The subjects were divided into 3 groups and the only difference between the groups was the colour of the cover page. The first group had red, the second green, the third, white.  This time their exposure to the colours was shorter – only seconds before they were asked to turn the page, and they weren’t exposed to the colour during the test itself, after they’d turned the page. Still the results were much the same as in the first experiment – exposure to the red cover page resulted in poorer scores.

Jacinta: Sooo, red’s a colour to be avoided when doing tests. What about the other colours? Were any of them good for improving test scores?

Canto: No, not in these experiments. And again, Lobel assures us that the study controlled for the variable of differential ability. The researchers conducted other studies on a range of participants – using verbal and non-verbal (e.g. mathematical) tests, and the results were consistent – exposing subjects to the colour red, and making them conscious of that colour, resulted in poorer scores.

Jacinta: And they have no explanation as to why? Presumably it’s some sort of connotative value for red. Red is danger, red is embarrassment…

Canto: Nature red in tooth and claw – but red is also the heart, the rose, the Valentine. Red has all sorts of contradictory connotations.

Jacinta: So isn’t it the way that red is seen in our culture? What about controlling for cultural connotations, however contradictory?

Canto: You mean trying it out in Outer Mongolia, or a remote African village? It’s a good point, but you know red is the colour of blood..

Jacinta: And of my life-producing vagina.

Canto: Yeah but look at the wariness with which women are treated for having one of those. Anyway I’m not sure they’ve done the study in those places, but they’ve varied the settings – labs, classrooms, outdoors – and the age-groups and the test-types, and the results haven’t varied significantly. And they did other tests to measure motivation rather than performance.

Jacinta: So you mean how seeing red influenced people’s motivation? Presumably negatively.

Canto: Yes. The same research team tried out an experiment on 67 students, based on the assumption that, if you’re an anxious or under-confident employee, you’ll knock on the boss’s door more quietly, and with fewer knocks, than if you’re a confident employee. That’s assuming you find the door closed, and you don’t actually know why you’ve been asked to see the boss. Reasonable assumptions?

Jacinta: Okay.

Canto: So here’s the set-up. The 67 students were told they would be taking one of two tests: analogies or vocal. The students were shown a sample question from each of the tests, to convince them of the process, though it was all subterfuge basically. They were given white binders, and asked to read the name of the test on the first page. They found the word analogies printed in black ink on a coloured rectangle. The colour was either red or green. Next they were asked to walk down the corridor to a lab to take the test. The lab door was closed, but it had a sign saying ‘please knock’. It was found that those who saw the test title on a red background consistently knocked less often and less insistently.

Jacinta: So they were de-motivated and made more anxious simply by this sight of red. Again, why?

Canto: Learned associations, presumably. Red with danger, with anger, with disapproval.

Jacinta: But – just seeing it on a binder?

Canto: That’s what the evidence says.

Jacinta: Okay – I’m not sure I’m entirely convinced, but all this is a bit negative. Granted we could avoid exposing students to red just in case it inhibits learning, but what about studies that show what might be done to improve learning? That’s what we should be aiming for, surely?

Canto: Okay, so now we’ve eliminated the negative, I promise to accentuate the positive in the next post.

Jacinta: Good, we really need to latch onto the affirmative, without messing with Ms In-between…

 

I like

I like

Written by stewart henderson

January 5, 2017 at 8:39 pm

a few words on Donald Trump and democracy

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Phineas T Barnum, a rather more likeable huckster

Phineas T Barnum, a rather more likeable huckster

I’ve never been too much exercised on US domestic politics, but I listened with some interest to an interview on the Point of Inquiry podcast recently with David Cay Johnston, the author of a book on Donald Trump, inter alia, and he effectively explained how such an obviously boorish character functioned, though he didn’t so much explain why he got to where he is today – which would require a different book, one that reads the psyche of a particular type of individual, or ‘mark’.

The term ‘mark’ is used by magicians playing as ‘psychics’ or ‘faith healers’ etc to refer to the easily duped. Johnson, in his book The Making of Donald Trump, describes Trump as a Barnum & Bailey ‘huckster’ type, far more interested in persuasion, usually for the purpose of making money, than truth. What struck Johnston, when he first reported on Trump in relation to his interest in casinos in the late eighties, was his ignorance, even of the business at hand. He tested this himself by asking Trump questions which contained deliberately false information and watching how Trump handled them. And of course got the usual arrogant bluster that we’ve all observed.

So this is the question. Why does anyone takes Trump seriously? I remember my own first experience of Trump, years ago, when he hosted some kind of reality show in which he was interviewing prospective job-seekers. It only took about five minutes to realise that the fellow was a self-important loudmouth and a bullying dirtbag. So it didn’t take long for my feelings of contempt to switch from the oxygen-thief to his ‘victims’. What kind of idiot would put herself in this position? Apparently it had to do with money and the power that it brought…

So the worry I have is not about the huckster Trump, it’s about those who take him seriously, his ‘marks’. And it’s also about the process by which anyone can obtain high political office in a very powerful country – a position of huge responsibility. Arguably, it’s a problem of democracy.

This problem was highlighted some 2,500 years ago, right at the beginning of democracy as a political system, when the sort of populism and demagoguery that Trump utilises so instinctively brought ancient Athens to its knees, and it’s the principle reason why the intellectual elites represented by the likes of Thucydides, Plato and Aristotle were so vehemently opposed to democracy. They’d witnessed the disastrous Sicilian campaign (which precipitated Athenian decline in the region) which they blamed, not entirely fairly, on that system. Certainly they recognised the dangers of such populists as Cleon and Alcibiades, though neither they nor anyone after them were able to come up with a better system. Plato’s Republic, which advocated, perhaps not entirely seriously, rule by an intellectual elite, was hampered by an absurdly static notion of society, a sort of eugenics avant la lettre, as if intellectuals (and warriors, and servants) were born and not made – or, at least, a mixture of both.

Yet if you look at our political system today, you’ll find that we temper the democratic political system with a fair degree of intellectual elitism in the form of our judiciary – the ‘unrepresentative swill’ that preside over our high court and other courts throughout the land, interpreting legislature judiciously and causing grumbling parliamentarians to find new and more thoughtful laws to get round them. And I would advocate another form of ‘elitist’ intervention to ensure more responsible government.

I’ve mentioned this before when I suggested that individuals who want to stand for public office, thus to participate in making laws that influence our citizenry and showcase our nation to the world (and more than this in the case of powerful nations), should have to pass a reasonably stringent scientific literacy test. Of course, such an idea will never get up, so I’m proposing an even broader one.

It’s expected that anybody applying for a job involving considerable responsibility should be submitted to considerable scrutiny regarding their plans for the job, their understanding of the job’s requirements, and their knowledge of the fields covered by the job. In the case of becoming the President of a nation, this scrutiny should surely be imperative. So, a rigorous questioning of the candidate’s knowledge and ideas with respect to that nation’s economic situation, its domestic and foreign policies, as well as a basic understanding of science in relation to national and global issues, should be an absolute minimum requirement.

Compare this requirement to what actually exists today. No scrutiny whatsoever. A complete protection against tough questioning on these matters, with no requirement to justify to the people who they serve – as the ultimate public servant – any remark or decision they make. It’s a problem.

Trump won’t become President, because though he knows how to play to and work a particular crowd, that crowd will continue to shrink as his tactics are exposed by the media and especially by those who otherwise would support the conservative side of politics he’s vaguely aligned himself to, but it’s surely a systemic failure that such an inappropriate and ignorant candidate should ever get to where he is today. If that’s how democracy works, then democracy isn’t enough. Democracy has its limits – it has become far too unquestioned as a political system. Its limits are in fact considerable. We shouldn’t decide scientific matters by democratic process (that sounds obvious, but I’ve heard more than one polly say the exact opposite), and we shouldn’t, in my view allow just anyone to stand for political office, especially at the top level. The consequences might be dire. And we should also do our best, though it’s a hard road to hoe, to make every vote count, by making it as generally informed and reasoned as possible. There’s nothing new about that last statement, but it still holds true. Democracy without education, in the broadest sense, isn’t worth much.

Plus ca change...

Plus ca change…

Written by stewart henderson

August 13, 2016 at 9:55 am

How on earth? A chat about origins.

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one impression of our proto-sun and solar nebula

one impression of our proto-sun and solar nebula

Jacinta: I’d like to know how we got in this position.

Canto: What position?

Jacinta: Here, on Earth.

Canto: We?

Jacinta: Humans.

Canto: That’s a very long story, which I suspect nobody’s really qualified to tell. But maybe we can report on the best speculations. First, in order to understand how we got here we have to understand how the Earth got here.

Jacinta: And so on, infinitely regressing. So let’s just start with the Earth.

Canto: Needless to say we don’t know all the details and there are doubtless competing theories, and new data is being regularly uncovered, but it obviously has to do with how our entire solar system was formed.

Jacinta: I’ve heard that all the heavy metals like iron and whatnot are forged within stars, like when they go supernova, but our star hasn’t done that, all it seems to produce is light, yet Earth is full of heavy elements. I really don’t get it.

Canto: I recall reading years ago a theory that the Earth was formed from an accretion of planetesimals, little planets…

Jacinta: Planettes?

Canto: Yes, but how those little things came into being themselves I’m not sure.

Jacinta: Well we have lots of rocky bits and bobs called asteroids floating about in the solar system…

Canto: Yes, but not randomly. there’s a whole big asteroid belt between Jupiter and Mars, where they’re coralled, sort of.

Jacinta: But comets are different, they seem to have their individual eccentric orbits.

Canto: I suppose the point is that they also have heavy elements, and how were those elements formed?

Jacinta: Heat and pressure, I’m guessing, so things must’ve been hugely different in earlier times.

Canto: Well, this BBC site gives us some of the latest speculations. They reckon that the Earth probably formed from planetesimals, so that’s still the best hypothesis it seems, though it’s very light on details:

The Earth is thought to have been formed about 4.6 billion years ago by collisions in the giant disc-shaped cloud of material that also formed the Sun. Gravity slowly gathered this gas and dust together into clumps that became asteroids and small early planets called planetesimals.

Jacinta: Yes, that’s extremely vague. How do they know there was a disc-shaped cloud here? How can they investigate that far back?

Canto: Well don’t forget that looking out over huge distances means looking back in time.

Jacinta: Yes but a huge distance away isn’t here. Is it?

Canto: Well it might be here then.

Jacinta: Effing Einstein. But they’re also searching for extra data on the past, like checking out meteorites, which might contain material older than anything on Earth. Can they reliably date material that’s say, 5 billion years old? The Earth’s only about 4.5 billion years old, right?

Canto: I think 4.6 billion, give or take a few minutes. About a third of the age of the universe. And here’s the thing, we’ve dated all the meteorites and asteroids we can get to and they’re all round the same age, within a narrow range of a few hundred million years. So our date for the beginnings of the solar system is the oldest date for these floating and landing rocks, which is also our date for the Earth, about 4.6 billion.

Jacinta: So is our dating system completely accurate, and what by the way are carbonaceous chondrites?

Canto: Well, yes, radioactive decay provides a very accurate clock, and these meteorites have radioactive material in them, just as the core of our planet does. All the evidence so far suggests that things happened very quickly, in terms of accretion and formation of planets, once all this heavy and radioactive material was created. Carbonaceous chondrites are a type of meteorite. They’re amongst the oldest meteorites but relatively rare – they make up less than 5% of our meteorites. I mean the ones that land here. Why do you ask?

Jacinta: I’ve heard about them as being somehow important for research, and maybe dating?

Canto: Well there are different types of C chondrites as they’re called, and some of them, most interesting to us of course, are rich in organic compounds and water. This fact apparently shows that they haven’t been subjected to high temperatures, unlike for example the early Earth. But let me return to that BBC quote above. The theory goes that a supernova explosion, or maybe more than one, created all the heavy elements we have now – iron, carbon, silver, gold, uranium and all the rest, heat and pressure as you say, and these elements swirled around but were gravitationally attracted to a centre, which evolved into our sun. This was the spinning disc-shaped cloud mentioned above, known as the solar nebula.

Jacinta: Would you call that a theory, or a hypothesis, or wild desperate speculation?

Canto: I’d call it ‘the best we can do at the present moment’. But be patient, it’s a great time to be young in astronomy today. What we need is data, data, data, and we’re just starting to collect more data than we can rightly deal with on planets within and especially outside our solar system. Kepler’s just the beginning, girlie.

Jacinta: Je suis tout à fait d’accord, boyo. I think many of the astrophysicists are looking forward to having their cherished models swept aside by all the new telescopes and spectroscopes and what else and the data they spew back to Earth.

Canto: Uhh, well anyway let’s get back to our ‘best scenario for the moment’ scenario. So you have all this matter spinning around and the force of gravity causes accretion. It’s a messy scenario actually because everything’s moving at different velocities and angular momentums if that’s a thing, upwards, forwards, sideways down, and sometimes there’s accretion, sometimes fragmentation, but overall the movement is towards coalescence due to gravity. Particles grow to the size of monuments and then different sized planetesimals, fewer and bigger and farther between. And the smaller, gaseous elements are swept out by the solar wind into the great beyond, where they accrete into gas giants.

Jacinta: Right, but isn’t the data from Kepler and elsewhere already starting to play havoc with this scenario? Gas giants within spitting distance of their suns and the like?

Canto: Well, you need liquid to spit, but maybe you have a point, but I think it’s wise not to be too distracted by exoplanets and their systems at this stage. I think we need to find an internally coherent and consistent account of our own system.

Jacinta: What about the Juno probe, will that help?

Canto: Well I’m sure it will help us learn more about gas giants, but let’s just focus on the Earth now.

Jacinta: Okay, stay focussed.

Canto: These larger planetesimals became bigger gravitational attractors, each accumulating matter until we had four rocky planets in different, sufficiently distant orbits around their sun.

Jacinta: Oh yes, and what about the moons? Why didn’t they coalesce as neatly as all the other minor rocky bits?

Canto: Mmmm, well there’s nothing neat about all this, but mmmm…

Jacinta: How many moons are there?

Canto: For the inner planets? Only three, ours and two for Mars. So the question is, how come some of those rocks, or at least three, didn’t get stuck to the bigger rocks i.e. planets, via gravity, but instead started circling those planets, also due to gravity.

Jacinta: Yes, which might be the same question as why do the planets orbit around this massive gravitational attractor, the sun, instead of getting sucked into it, like what happens with those supermassive supersucking black holes?

Canto: Well first let me talk about our moon, because the most currently accepted theory about how our moon came into existence might surprise you.

Jacinta: It was a lot closer to the Earth at the beginning, wasn’t it? So it’s slowly spiralling away from us?

schematic of tial forces affecting moon's orbit and earth's rotation

schematic of tidal forces affecting moon’s orbit and earth’s rotation

Canto: Yes. Tidal forces. The moon’s tidally locked to the Earth, it’s the same face she shows us always, but let’s keep on track, it was formed in the very early days, when things were still very chaotic. A pretty large planetesimal, or planetoid, slammed into Earth, which was somewhat smaller then, and it stuck to it and coalesced with it – the Earth was pretty-well molten in those days – and a lot of debris was thrown out into space, but this debris didn’t quite escape Earth’s gravitational field, instead it coalesced to form our moon. This theory was first put forward a few decades ago, after moon rocks brought back from the Apollo missions were found to be younger than the oldest Earth rocks, and composed of much the same stuff, which came as a great surprise. But now the theory is well accepted, as it accounts for a number of other factors in the relationship between the two bodies.

the hypothesised Thea impact, which enlarged the Earth and created the Moon

the hypothesised Thea impact, which enlarged the Earth and created the Moon

Jacinta: Okay, so is that it on how the Earth was formed?

Canto: Well, yes, but the bigger question is your original one – how did we get here. And that means we have to look at how life got started here. Because we’re only up to about 4.5 billion years ago – with the moon being formed about 50 million years after the Earth. And at that point the Earth was like a sea of hot magma, hot from all the collisions on the surface, and hot from the radiation bursting out from its core. Hardly great conditions for life.

Jacinta: Well there might’ve been life, but not as we know it boyo.

Canto: I’m skeptical, but we’ll talk about that next time.

Some sources:

on the relation between moon and earth

formation of the moon

the solar nebula theory and its problems

 

 

Written by stewart henderson

July 19, 2016 at 8:45 am

movie review: Limi Girl – part one

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Limi-Girl-2014-4

Jacinta: Hurray we’re going to do a movie review.

Canto: Yes and it’s a beautiful, quiet and powerful Chinese movie, co-written and directed by Roy Cheung made in 2014 and set among the Limi people, an apparently rather impoverished tribal group in Yunnan Province, near the Burmese border. The Limi people have their own language, part of the Tibetan group, but the film is in Mandarin, not surprisingly, as Limi is spoken by only around 30,000 people.

Jacinta: It’s certainly an affecting movie about the trials and tensions of a very basic rural life, the generational changes, the lure of the city, the yearning for something more, the pull of home and safety… it’s a universal story of tradition versus change, and the heartache of those torn between.

Canto: So the film, which is available on youtube, starts as the central character, Xiumei (Shi Yan), returns to her home village from studying in the town of Shifang, in neighbouring Szichuan Province, much to the delight of her little ‘sister’ Gaidi. But Xiumei hasn’t returned in triumph, she’s ‘dropped out’, and the village women have gathered to taunt her about her failure. Her humiliated father is forced to apologise and promises to pay back the money he’s borrowed for his daughter’s education.

Jacinta: And when we first see Xiumei she’s in city clothes, unlike the village women and girls, who all wear the same outlandish pillowy head-dresses and navy blue robes. The village huts are of rickety logs and thatch, set in a landscape of rock-strewn hills and streams. Physically beautiful, it’s clearly a tough environment for eking out a living.

Xiumei angrily faces the angry villagers

Xiumei angrily faces the angry villagers

Canto: Xiumei comes to her doorway and confronts her critics. From the conversation we learn that she has given up college because she wants to be a dancer, though it’s confusing – she promises to repay the money, she promises to return to college, she’s defiant and angry. She retreats inside, and Gaidi comes in to comfort her, and to ask if she’s heard any news from Szichuan about her (Gaidi’s) parents.

Jacinta: So Gaidi isn’t actually Xiumei’s sister, but possibly a cousin, who’s in the care of Xiumei’s parents – another burden for this poor couple.

Canto: Xiumei hasn’t any news and can only show the girl a postcard of Shifang, which she stares at sadly. In the next scene, in a beautiful mountain shrine, Xiumei is back in traditional dress, burning incense to the Buddha along with Gaidi and the village women. She asks to be blessed to go to college again, while Gaidi prays to be reunited with her parents in Szichuan. Then we follow a bus rolling along a mountain road. Inside the bus, a young man, Heigo, is returning to the village. His mother is in the local hospital and he’s returning from Guangdong to check on her… or so it seems.

Jacinta: And in these scenes we see again the rugged beauty of the landscape, a contrast to the unhappy yearnings of the humans. Guangdong by the way is a coastal province bordering Hong Kong and Macau, well to the east of Yunnan.

Canto: So we find out about Heigo through another passenger who greets him, and tells him laughingly that his mother has tricked him – she’s just luring him home to marry his ‘childhood sweetheart’, Shugio – as has always been intended. Heigo looks annoyed and asks after Xiumei – he’s heard she’s back. His friend, though only wants to talk of his Heigo’s coming wedding to Shugio, and how lucky he is.

Jacinta: So this is how it’s shaping up, an inter-generational contest. The main characters in the film are the young – Xiumei and Heigo, and Shugio, Heigo’s intended, and little Gaidi. Heigo has been tricked into returning, and Xiumei is under pressure…

Canto: Heigo gets off the bus before it reaches the village. He’s clearly thoroughly peed off, but while he sits muttering by a brook, Shugio arrives on a motorbike. A strange sight, in her traditional costume. She’s annoyed that she had to come all this way to meet him, having heard from his friend that he got off the bus early. And Heigo is annoyed too and reluctantly goes back with her to the village.

Jacinta: Yes, he sees Shugio as part of the family group colluding to entrap him. The motorbike, I think, is an interesting symbol. It testifies to the rough terrain, more easily negotiated on a motorbike, but it’s also the only motorised object, the most advanced piece of technology in the movie.

Canto: Along the road to the village, with Heigo driving, they encounter Gaidi, with Xiumei carrying a heavy basket. Gaidi hails Heigo, her ‘cousin’. He greets her happily, but is particularly keen to chat with Xiumei. He follows her up the hill, while impatient Shugio calls him back. Xiumei’s response to him is cool but friendly enough, and she allows him to accompany her, while irritated Shugio drives off with Gaidi as pillion.

Jacinta: He clearly fancies her.

Canto: Yes but her views aren’t so clear. So Shugio and Gaidi arrive at Shugio’s mother’s house – she’s weaving, a bridal costume perhaps – but she’s disappointed to find Gaidi arriving instead of Heigo.

Jacinta: This is a confusing scene. She asks Gaidi, ‘where’s your cousin’, meaning Heigo, and Gaidi says, according to the subtitles, ‘cousin is taking sister Xiumei away on a motorbike’, which is either untrue or nonsensical.

Canto: Yes, there’s only one motorbike in the movie, and Shugio was riding it. If Gaidi is lying, it’s not to keep Xiumei out of trouble. It doesn’t make sense. Anyway, Shugio’s mother scolds Gaidi and tells her she’s not to see Xiumei again.

Jacinta: From this scene we realise that Gaidi lives with Shugio and her mother.

Canto: In the next scene, Heigo is punting Xiumei along in a boat on the river.

Jacinta: Being very helpful – he was last seen carrying her basket for her.

Canto: Their conversation here is revealing. Heigo asks why she didn’t answer his many letters. She says she didn’t want to distract him from his work, and he responds that his work, as a supervisor, is utterly boring. She changes the subject, asking him about his ‘wife’, Shugio, and of course he responds that she isn’t his wife – yet.

Jacinta: Yes and there’s nothing apparently coquettish about this reference. She seems to be reminding him about his commitment.

Canto: Which seems a bit harsh. We don’t know if he’s ever made a commitment, it all seems to be about family assumptions. Anyway, Xiumei next praises Shugio’s cleverness and hard work. Certainly not encouraging his attentions. The scene ends strangely, as Heigo takes up a sorrowful song, cheerfully sung by washerwomen on the bank. It’s a song of lovesickness, and Heigo howls…

Jacinta: So ends the first part. It looks like it’s going to be a long review.

Screenshot 2016-06-10 16.04.49

Heigo joins in the song

 

Written by stewart henderson

June 10, 2016 at 4:28 pm