Links for August 2010

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The narrative construction of reality

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Narratives, then, are a version of reality whose acceptability is governed by convention and “narrative necessity” rather than by empirical verification and logical requiredness,

Bruner, J. (1991). The narrative construction of reality. Critical Inquiry, 18(1), 1–21.

Links for June-July 2010

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Quote #255: Friedman on theory

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Viewed as a language, theory has no substantive content; it is a set of tautologies. Its function is to serve as a filing system for organizing empirical material and facilitating our understanding of it; and the criteria by which it is to be judged are appropriate to a filing system. Are the categories clearly and precisely defined? Are they exhaustive? Do we know where to file each individual item, or is there considerable ambiguity? Is the system of headings and subheadings so designed that we can quickly find an item we want, or must we hunt from place to place? Are the items we shall want to consider jointly filed? Does the filing system avoid elaborate cross-references?

Milton Friedman, in Essays in Positive Economics (1953). Chicago: University of Chicago Press. (thanks Dan!)

Homeopathy Generics

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Simon Singh approached his debate with homeopathy-promoting MP David Tredinnick all wrong this morning. He dived into a critique of the studies Tredinnick presented, thus allowing him to maintain the advantage of framing the debate and losing most of the audience with discussion of statistics and control groups [1].

Instead, he should have laughed at the MP and said gently something like “It is undoubtedly true that homeopathy does work, the only question is about why it works. All the evidence suggests that the effect is due to a combination of the power of individual’s beliefs about homoeopathy and the healing benefits of a meaningful relationship with a physician. For every 1 study that says, like David Tredinnick’s three, that homeopathy has benefits beyond those of placebo there are 50 which suggest that homeopathy medicines are inert and all the properties ascribed to them are properties of belief and relationships. Because of this, we need to ask if we want to allow a misguided homeopathy industry to charge us for medicines which we know to be snake oil, and whether there is not some less expensive and less deceitful way we can access the powerful healing effects that placebos such as homeopathy provide.”

On that last point, I’ve had an idea. Homeopathy is fake medicine, and obviously this has lots of benefits. All the power of placebos! Minimal risk and side-effects! Safe to use in combination with conventional medicine! The only downside I can see is that only patients you allow to remain misinformed can benefit and that the homeopathy industry has all this rigmarole involved in the preparation and delivery of the product that necessarily makes it expensive. So why not sell fake homopathic medicine? I don’t see how homeopaths could object if the medical establishment turns their strategy back on them. We could even use their experimental methods to replicate the successful results they’ve found with homeopathic treatment for our fake-homeopathic treatment. Instead of branded pharmaceuticals you can buy generic pharmaceuticals which have the same chemical composition at the fraction of the price, why can’t we buy homeopathy generics which are equally inert? Doctors could be free to prescribe them, saving the NHS money and simultaneously allowing patients access to all the wonderful benefits of placebo.

[1] Not that discussion of statistics and control groups is a bad thing, or a guaranteed way to lose your audience, I just think Singh lost his because of the way he discussed statistics and control groups, and because it wasn’t essential to the wider issues

Links for May 2010

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Quote #254: Democracy

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Democracy is the theory that the common people know what they want, and deserve to get it good and hard.

H. L. Mencken

Sheffield Represent

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Spotted in a doorway round the corner from the Union Pool, in Williamsburg, Brooklyn:

I am now back in Sheffield, England

Links for March 2010 II

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Links for March 2010 TED talks edition

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I’ve been listening to podcasts while walking to work

Point Reyes, California

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Photo taken approximately here, last Sunday

Quote #253

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As important as it is to change the light bulbs, it is more important to change the laws

Thank you, Al Gore. In his 2008 TED talk calling for a ‘new hero generation’ to deal with climate change

Narrative Extraction

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I don’t predict what is going to happen when I watch a film. It isn’t like I can’t, it just doesn’t occur to me. When the bad guy turns out to be a good guy (or vice versa) my friends will say “Well that was obviously going to happen”. But it wasn’t obvious to me.

If you had described the salient facts to me, given me a plot summary, I would be able to make the correct prediction, I’m sure, but something about the way my brain works stops me making the leap from the level of experience to the level of description. I am stuck just experiencing the events of the film, and not representing them in a way that would allow me to draw obvious conclusions.

Let’s call this ability ‘narrative extraction’.

I’ve got some smarts, sure, but I think I’ve got a deductive kind of smarts. This is the kind of smarts that can take a set of facts, or axioms, and crunch through the consequences until you get to inevitable result. I’m good at maths and most logic puzzles. I think narrative extraction requires a different kind of smarts. It is the ability to pick an appropriate set of facts or an appropriate method of description which will provide you with an answer which serves your purposes.

For the film example you need to do more than just experience the characters, you need to classify them by their types, the film by genre, the plot by template and from all that infer what would be the most likely thing for an exciting film.

Moral reasoning requires the same kind of smarts. There’s a famous test of moral reasoning by Kohberg, where children are presented with vignettes (“Your wife is sick and you cannot afford medicine. Should you break into the pharmacy and steal it?” type things). Kohberg ranked children’s moral reasoning, giving the most credit to moral reasoning which invoked logical deductions from abstract moral frameworks.

Gilligan, in her book “In a different voice” has a powerful critique of Kohlberg’s system, on the grounds that it gave credit to one kind of reasoning – abstract logical deduction or calculus (e.g. “Stealing is wrong, but letting your wife die is worse, so I should therefore steal the medicine”) – and not to another kind of more contextually sensitive reasoning (e.g. “If I break into the pharmacy then I might get caught and then I won’t be able to help my wife, so I should find another way of getting the medicine”). This sensitivity to what is not in the question – what is not explicitly stated – is a part of narrative extraction.

There is another important, perhaps more primary, way in which narrative extraction is required for moral judgement. Kohlberg’s vignettes are not just logic problems, which can be convergently or divergently solved, they are also descriptions of the world. Thus they do one of the major tasks of moral reasoning for you – that of going from the nebulous world of experience to the concrete would of categories and actions.

As soon as you describe the world you massively constrain the scope for moral reasoning. You can still make the wrong judgement, but you have made moral reasoning possible by the act of description using moral categories.

Milgram demonstrated scientifically the banality of evil, that normal people could do inhuman things. Did those people who thought they were delivering lethal electric shocks make an incorrect moral judgement? Did they weigh “doing what you are told” against “the life of an innocent” and choose the former? My intuition is that they did not, not explicitly. Yes they made the wrong choice (we too would probably have made the wrong choice), but I believe that they were so caught up in the moment, in the emotion of the situation, that they did not move to the necessary level of description. We, reading this in comfort, are given the moral categories and the right choice is so obvious that we have difficulty empathising with their situation. The narrative extraction has been done for us, so right thing seems obvious. But it isn’t.

Sorry No Ducks (a cartoon by Michael Leunig)

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Links for February 2010, part II

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Links for February 2010

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Quote #252: Silence, exile, cunning

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“You have asked me what I would do and what I would not do. I will tell you what I will do and what I will not do. I will not serve that in which I no longer believe, whether it call itself my home, my fatherland or my church: and I will try to express myself in some mode of life or art as freely as I can, and as wholly as I can, using for my defence the only arms I allow myself to use . . . silence, exile, and cunning.”

James Joyce, in A Portrait of the Artist as a Young Man

Moral Clarity by Susan Neiman

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Susan Neiman’s “Moral Clarity – a guide for grown-up idealists” (2009) is a passionate and literary book about moral reasoning and the achievements of the Enlightenment (especially Kant). The book contains fantastic and acute re-readings of the myths of Job and Odysseus, as well as plenty of examples of Neiman’s own moral clarity – she has a great analyst’s knack of being able to articulate clearly and succinctly exactly what was so pernicious about many of the arguments and actions of the neocon government under Bush. Recommended.


“The Enlightenment gave reason pride of place, not because it expected absolute certainty, but because it sought a way to live without it”
(p218)

Study Leave

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I am on study leave. I’ll be in Berkeley, California, in February and some of March, and then from mid-March I’ll be in New York. I am contactable by email.

Links for January 2010

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Better thinking through chemistry

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This chapter was due for inclusion in The Rough Guide Book of Brain Training, but was cut – probably because the advice it gives is so unsexy!

The idea of cognitive enhancers is an appealing one, and its attraction is obvious. Who wouldn’t want to take a pill to make them smarter? It’s the sort of vision of the future we were promised on kids TV, alongside jetpacks and talking computers.

Sadly, this glorious future isn’t here yet. The original and best cognitive enhancer is caffeine (“creative lighter fluid” as one author called it), and experts agree that there isn’t anything else available to beat it. Lately, sleep researchers have been staying up and getting exciting about a stimulant called modafinil, which seems to temporarily eliminate the need for sleep without the jitters or comedown of caffeine. Modafinil isn’t a cognitive enhancer so much as something that might help with jetlag, or let you stay awake when you really should be getting some kip.

Creative types have had a long romance with alcohol and other more illicit narcotics. The big problem with this sort of drug (aside from the oft-documented propensity for turning people into terrible bores), is that your brain adapts to, and tries to counteract, the effects of foreign substances that affect its function. This produces the tolerance that is a feature of most prolonged drug use – whereby the user needs more and more to get the same effect – and also the withdrawal that characterises drug addiction. You might think this is a problem only for junkies but, if you are a coffee or tea drinker just pause for moment and reflect on any morning when you’ve felt stupid and unable to function until your morning cuppa. It might be for this reason that the pharmaceutical industry is not currently focusing on developing drugs for creativity. Plans for future cognitive enhancers focus on more mundane, workplace-useful skills such as memory and concentration. Memory-boosters would likely be most useful to older adults, especially those with worries about failing memories, rather than younger adults.

Although there is no reason in principle why cognitive enhancers couldn’t be found which fine-tune our concentration or hone our memories, the likelihood is that, as with recreational drugs, tolerance and addiction would develop. These enhancing drugs would need to be taken in moderate doses and have mild effects – just as many people successfully use caffeine and nicotine for their cognitive effects on concentration today. Even if this allowed us to manage the consequences of the brain trying to achieve its natural level, there’s still the very real possibility that use of the enhancing drugs would need to be fairly continuous – just as it is with smokers and drinkers of tea and coffee. And even then our brains would learn to associate the drug with the purpose for which they are taken, which means it would get harder and harder to perform that purpose without the drugs, as with the coffee drinker who can’t start work until he’s had his coffee. Furthermore, some reports suggest that those with high IQ who take cognitive enhancers are mostly likely to mistake the pleasurable effect of the substance in question for a performance benefit, while actually getting worse at the thing they’re taking the drug for.

The best cognitive enhancer may well be simply making best use of the brain’s natural ability to adapt. Over time we improve anything we practice, and we can practice almost anything. There’s a hundred better ways to think and learn – some of them are in this book. By practicing different mental activities we can enhance our cognitive skills without drugs. The effects can be long lasting, the side effects are positive, and we won’t have to put money in the pockets of a pharmaceutical company.

Link to more about The Rough Guide book of Brain Training
Three excellent magazine articles on cognitive enhancers, from: The New Yorker, Wired and Discover

Cross-posted at mindhacks.com

The Rough Guide to Brain Training (Moore & Stafford, 2010)

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The Rough Guide to Brain Training is a puzzle book which incluces essays and vignettes by myself. The book has 100 days of puzzles which will challenge your mental imagery, verbal fluency, numeracy, working memory and reasoning skills. There are puzzles that will look familiar like suduko, and some new ones I’ve never seen before. Fortunately the answers are included at the back. Gareth made these puzzles. I find them really hard.

I have 10 short essays in the book, covering topics such as evidence-based brain training, how music affects the developing brain, optimal brain nutrition and what the brains of the future will look like. As well as the essays, I wrote numerous short vignettes, helpful hints and suprising facts from the world of psychology and neuroscience (did you know that squids have dounut shaped brains? That you share 50% of your genes with a banana? That signals travel between brain cells at up to 200mph, which is fast compared to a cycle courier, but slow compared to a fibre optic cable). Throughout the book I try to tell it straight about what is, isn’t and might be true about brain training. I read the latest research and I hope I tell a sober, but optimistic, message about the potential for us to change how we think over our lifetimes (and the potential to protect our minds against cognitive decline in older age). I also used my research to provide a sprinkling of evidence-based advice for those who are trying to improve a skill, study for an exam or simply remember things better.

Writing the book was a great opportunity for me to dig into the research on brain training. It is a topic I’d always meant to investigate properly, but hadn’t gotten around to. The claims of those pushing commercial brain training products always seemed suspicious, but the general idea – that our brains change based on practice and experience – seemed plausible. In fact, this idea has been one of the major trends of the last fifty years of neuroscience research. It has been a big surprise to neuroscientists as experiment after experiment has shown exactly how malleable (aka ‘plastic’) the structure and function of the brain is. The resolution of this paradox of the general plausibility of brain training with my suspicion of specific products is in the vital issue of control groups. Although experience changes our brains, and although it is now beyond doubt that a physically and mentally active life can prevent cognitive decline across the lifespan, it isn’t at all clear what kinds of activities are necessary or essential for general mental sharpness. Sure, after practicing something you’ll get better at it. And doing something is better than doing nothing, but the crucial question is doing something you pay for better than doing something else that is free? The holy grail of brain training would be a simple task which you could practice (and copyright! and sell!!) and which would have benefits for all mental skills. Nobody has shown that such a task or set of tasks exists, so while you could buy a puzzle book, you could also go for a jog or go to the theatre with friends. Science wouldn’t be able to say for certain which activity would have the most benefits for your mental sharpness as an individual – although the smart money is probably on going jogging. It is to the credit of the editors at the Rough Guides that they let me say this in the introduction to the Rough Guide to Brain Training!

There wasn’t room in the book for all the references I used while writing it. This was a great sadness to me, since I believe that unless you include the references for a claim, you’re just spouting off, relying on a dubious authority, rather than really talking about science. So, to make up for this, and by way of an apology, I’ve put the references here. It will be harder to track specific claims from this general list that it would be with in-text citations, so if you do have a query, please get in touch and I promise will point you to the evidence for any claims I make in the book.

Additionally, I’ll be posting here a few things from the cutting room floor – text that I wrote for the book which didn’t make it into the final draft. Watch out, and if you do get your hands on a copy of this Rough Guide to Brain Training, get in touch and let me know what you think.

Amazon link (only £5.24!)
Scientific references and links used in researching the book
Cross-posted at mindhacks.com

Quote #251: What man can make of man

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An experimental analysis shifts the determination of behavior from autonomous man to the environment—an environment responsible both for the evolution of the species and for the repertoire acquired by each member. Early versions of environmentalism were inadequate because they could not explain how the environment worked, and much seemed to be left for autonomous man to do. But environmental contingencies now take over functions once attributed to autonomous man, and certain questions arise. Is man then “abolished”? Certainly not as a species or as an individual achiever. It is the autonomous inner man who is abolished, and that is a step forward. But does man not then become merely a victim or passive observer of what is happening to him? He is indeed controlled by his environment, but we must remember that it is an environment largely of his own making. The evolution of a culture is a gigantic exercise in self-control. It is often said that a scientific view of man leads to wounded vanity, a sense of hopelessness, and nostalgia. But no theory changes what it is a theory about; man remains what he has always been. And a new theory may change what can be done with its subject matter. A scientific view of man offers exciting possibilities. We have not yet seen what man can make of man.

B.F.Skinner, last words of Beyond Freedom and Dignity (1971)

Quote #250

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They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety

Benjamin Franklin, from notes for a proposition at the Pennsylvania Assembly, February 17, 1775

Links for December 2009

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Quote #249

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Selfishness is not living as one wishes to live, it is asking others to live as one wishes to live.

Oscar Wilde, in ‘The Soul of Man Under Socialism’ (1895)

Ad Nauseam

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adnauseam I am reading Ad Nauseam: A Survivor’s Guide to American Consumer Culture, edited by Carried McLaren and Jason Torchinsky. The book is a funny, smart and sometimes shocking collection of articles from Stay Free Magazine and blog. I first came across Stay Free when I was researching the psychology of advertising and was impressed by their sophisticated take on how adverts affect consumers’ decision making. They discuss in Ad Nauseam how advertising is often misunderstood, with people relying on an intuitive ‘Advertising doesn’t effect me’ view or swinging to the opposite extreme of the ‘Sinister Advertisers Manipulate Consumers with their Mind Control Tricks’ position. Both positions distract from the very real, but not magical, power of advertising.

The book has a great discussion of Wilson Bryan Key’s Subliminal Seduction, the book that launched the idea that subliminal, and often sexual, figures are embedded in random features of adverts such as in ice cube shadows. The idea of these ‘embeds’ is nonsense, of course, but great fun to look for and a great distraction from the real persuasive content of the advert. The book also has a chapter on the origins of modern advertising practice in 19th century pharmaceutical advertising (the manufacturing of ailments for which ready made ‘cures’ can be sold has been covered by Vaughan on mindhacks.com before, in relation to the mental health). Packed with critical analysis of the advertising industry, more informative history and some shocking examples of how consumerism has worked its way into many aspects of our daily lives, this book is essential intellectual self-defense, managing to be critical and aware without ever being sanctimonious or hysterical.

Cross-posted at mindhacks.com

Do you dream of being chased?

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Last night I had two dreams in which I was being chased (once by a tour-de-france cyclist in Venice, once by a giant snake in a field, since you ask). I was thinking that being-chased dreams are probably my brain rehearsing escape behaviours – a night-time training programme built in by evolution. Thinking more on it, I realised that I have never had a chasing dream, only being-chased dreams. Is this because being-chased is more adaptive to rehearse, or because of something peculiar to my idiosyncratic psychology? Let’s find out, please vote using the poll below:

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Links for november 2009

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My team

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Inspired by badscience:

churchsign

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