Tuesday, December 30, 2008

A year of Occam's Donkey

Well, Occam's Donkey has survived its first year intact.

I have found the experience of blogging and following other blogs enormously enriching. I have been forced to blow the cobwebs of years of neglect from an ageing brain and hopefully detached and untangled some of the plaques and tangles(metaphorically). I have enjoyed being a thorn in the side of some of the South African quackeries.

Has this blog (and thousands of others like it) made a difference? Is pseudoscience and quackery on the retreat? Is there an upward trend in the use of critical thinking and evidence supported practice? In the immortal words of Shrek's Donkey:

"Are we there yet?"


Dr. Ben Goldacre and one of his commenters supplied the answer in Bad Science:

"It’s only when you line these jokers up side by side that you realise what a vast and unwinnable fight we face."
and
"I sometimes think the woos have won and we’re fighting a guerilla campaign in occupied territory."

I'm afraid gullibility still rules and will continue to do so in the foreseeable future, especially in my field of interest, education. Quackery, especially those with neuroscience pretentions, often aided and abetted by the educational authorities and the teacher unions, flourish. Let's see what we can do about it in 2009.

Cartoon (somewhat altered) from Philosophy and Reasoning Network.

Sunday, December 28, 2008

Welsh rugby and papal deaths

Rugby (the religion of Wales) and its influence on the Catholic church: should Pope Benedict XVI be worried?. This authors of this tongue-in-the-cheek article in the British Medical Journal investigated a Welsh urban legend that:

"... every time Wales win the rugby grand slam, a Pope dies, except for 1978 when Wales were really good, and two Popes died."
A graphic from the article, indicating the winners of the Six Nations Championship (its current name), grand slams achieved (winning all the games) and papal deaths.


The authors' conclusion?

"We found a borderline significant (P=0.047) association between Welsh performance and the number of papal deaths but no significant associations between papal mortality and performance of any other home nation."
They believe that the pontiff should just be a wee bit concerned, considering Wales' dominance in the Six Nations this year. Its less sterling performance against the Southern teams such as the Springboks and All Blacks was not considered.

Not to be outdone, a group of medical doctors from Italy, one of them on the Vatican medical team, commented that they were more worried about the general performance of the Welsh rugby team than about the health of the pope!

Hat tip to Dave Snowden for this story. As he pointed out, it is a satire on the old correlation proves causation fallacy.

Bringing this closer to home, with the current ascendancy of the South African rugby and cricket teams, similar correlations could "cause" a veritable massacre. The sorry record of our soccer team, however, should allow one to cherry pick suitable celebrities who should put their trust on the Bafana Bafana's continued poor performance. Their only achievement of any note was winning the African Nations' Cup in 1996. Francois Mitterrand died during the tournament, but I sure Nicholas Sarkozy will not lose any sleep about it.

Monday, December 8, 2008

Metaphors for woo and war

My previous post was about the use of metaphor and framing in the fight against pseudoscience. I continue this theme with some amusing examples of metaphor and onomatopoeia for woo and war.

Woo

I'm using the word woo as a synonym for pseudoscience and quackery (and because it rhymes better with war than bullshit).

Quack

Quack is short for quacksalver, which is derived from the Dutch kwakkensalver. Kwakken refers to boasting, salve an ointment. Quacksalver therefore literally boasting about an ointment. The term therefore was literal initially. Somewhere along the line it became associated with the sound ducks make, therefore quacking like a duck. The initial literal kwakkenzalver became the metaphor quack. See for instance this image of a duck on Dr Stephen Barrett's well-known website Quackwatch:

Based on the sound it makes and its flocking behaviour, South Africans know of an equally appropriate avian simile or metaphor for quacking, the Redbilled Woodhoopoe, or the more telling Afrikaans name, the "kakelaar" (literal English translation, the cackler). This is how it's described in Newman's Birds of Southern Africa:

"The call is a high-pitched cackling started by one and taken up by others to produce a cacophony of hysterical laughter similar to but more musical, less mechanical-sounding than the Arrowmarked Babbler (see Katlagter later in post). Fly from tree to tree in a straggling procession, settling low down and working their way to the top before flying of to the next tree."
A single kakelaar. Their crazed cackling and seemingly senseless scurrying behind each other from the the bottom to the top of a tree before flying off to the next, make for great entertainment. An appropriate metaphor for a quacking granfalloon? (Did I mention that kakelaars stink?)

War

The Devil's Paintbrush

Some years ago I did research on the use of Maxim machine-guns in the Anglo-Boer War (1899 - 1902). The Maxim was the first really effective mass-produced machine-gun. Hiram Maxim, an American, invented it after being told by friend that the way to get rich was to:

"... invent something that will enable these Europeans to cut each other's throats with greater facility."
The Vickers-Maxim machine-gun and its licenced German version, the Spandau, were in large part responsible for the horrible slaughter that occurred in no-man's land between the opposing trenches of the First World War. This earned the Maxim the grim nickname and descriptive metaphor, the Devil's Paintbrush.

A Maxim Extra-Light Model 1895 used by Boer forces.

The "katlagter" (literally, the laughing cat)

Maxim's machine-guns were used extensively by both sides in the 2nd Anglo-Boer War. Some interesting similes, metaphors and onomatopoeia describing Maxim's machine-guns and their effect, arose during the conflict. One of the Boer soldiers' names for the Maxim .303 caliber machine-gun, was the katlagter. It is the Afrikaans name of a bird, the Arrow-marked Babbler. Roberts Birds of South Africa describes its call as follows:
"... a grating churr which is uttered by all the birds in a party one after the other. The effect is a whirring, grating, crescendo of sound, getting louder and louder as each bird joins in and dying away as they stop one by one."
Some years ago a friend and I went hunting in the Northern Tranvaal (a bushveld area of South Africa). At our campsite, I suddenly heard a racket exactly as described above. It sounded exacly like a machinegun and I knew it had to be katlagters (babblers). I scanned the noisy culprets through my binoculars and checked my Roberts bird book. Yes, they were Arrow-marked Babblers. The nickname my Boer ancestors had given the Maxim machine-gun was quite appropriate.

A katlagter (Arrow-marked Babbler), thank you to Dries vd Merwe's photostream.

The Pom-Pom

The Maxim-Nordenfelt, or Pom-Pom, was an overgrown Maxim machine-gun that fired one pound shells. It was quite ineffective, but scared the enemy and was a great morale booster on your side. Its nickname was an onomatopoeia, based on either the sound of the shells being fired, or the explosion of its shells one after the other. Here are some more descriptions of the Pom-Pom, rich in figurative language:

Arthur Conan Doyle (describing how hardened soldiers):

"... found a new terror in the malignant 'ploop-plooping' of the automatic quick-firer".
In another account Pom-Pom shells are described as having:

"... flapped and clacked along the ground in a straight line like a string of geese".
A Boer War Maxim-Nordenfelt Pom-Pom.

To call a quack a quack has become politically incorrect and even illegal in some places. A war a hundred years ago provides us with some alternatives. How do cacklers, babblers and pom-poms sound?

Thursday, December 4, 2008

Metaphors for countering pseudoscience

Kruglanski and others have an interesting article in the October/November 2008 edition of Scientific American Mind on the use of metaphor to determine framing in countering terrorism. It holds some lessons for those of us who try to counter pseudoscience and quackery in education and other related fields. The article is not fully available online and I shall therefore summarise it briefly.

Kruglanski et. al. point out that terrorism and counterterrorism was framed differently by successive US administrations, especially by the use of different metaphors when discussing these issues. These metaphors and the resulting framing influenced the actions taken against terrorism. Presidents Nixon and Reagan used disease metaphors. Clinton used justice metaphors, while Bush used war metaphors. According to Kruglanski et. al., framing couterterrorism as war has certain costs:

"It threatens to corrupt society's values, disrupts its orderly functioning and reshuffles its priorities. War calls for the disproportunate investment of a nation's resources, with correspondingly less left for other concerns, including the economy, health care and education."
This was clearly written from a specific ideological perspective and someone else may have concluded differently about the implications of the war metaphors being used. The fact is, however, that the metaphors used had some influence on the actions of participants.

There is a great deal of controversy in Psychology on issues of metaphor and framing. To misquote Bob Sutton, this is a field where strong opinions are strongly held. I am not current with the details of disagreements in this field. Different views that need to be considered are those of Steven Pinker, George Lakoff and Daniel Kahneman. A much discussed debate between Pinker and Lakoff, with some informative comments, can be found at this link. Chris at Mixing Memory commented extensively, if somewhat ad hominem, on the debate.

Framing the fight against pseudoscience

In using the word fight, I am already framing the action against pseudoscience as a war. In fact, it it difficult to avoid war metaphors. In a recent post on the blog Neurologica, neurologist Steven Novella made extensive and conscious use of war metaphors. He justified it thus:
"We are also in the midst of an endless culture war, a struggle between two aspects of human nature. On the one hand are the proponents of mysticism, superstition, pseudoscience, and anti-science. On the other are the defenders of science and reason.

Some of my skeptical colleagues have objected to the military analogy, but we are engaged in a real struggle, and we are fighting over more than bragging rights. The stakes are real: control of resources, support and recognition of government, the running of institutions, access to the media and to the halls of academia and education."
I believe that war metaphors are inevitable in this "fight". This holds the danger of alienating possible converts to science and reason, but there is hopefully little chance that the war metaphor will become literal.

A second frame is that of ridicule. Examples of this are to be found in many posts on the blog Bad Science by Ben Goldacre. Words (not necessary metaphoric) that signal a frame of ridicule include bullshit, nonsense, woo, quack, granfalloon, gullibility and so forth. The danger of using this frame is the thin line between legitimately ridiculing the opponent and his/her position on the one hand, and the use of ad hominem and straw man fallacies on the other (not Goldacre, just generally). Ridicule, even more than using the war metaphor, will harden attitudes and may prevent converts to science and reason. Having said that, the chance of converting the pseudoscience huckster gurus is slim. The targets for conversion should be the camp-followers (i.e. franchise holders) and the consumers (i.e. parents, teachers, schools). Well directed ridicule (against the gurus) may sway their attitudes. An example here was the ridicule Paul Dennison, the founder of Brain Gym, was subjected to on television.

A third and last frame (I'm sure there are more) is education. Words that would signal an educational frame include information, knowledge, evidence, training, science and so forth. A good example of an organisation that operates according to an educational frame, is Sense about Science in Britain. The targets of activities from within an educational frame would mainly be the potential consumers of pseudoscientific approaches. The vehicles through which education should proceed include the mass media, the internet and blogs such as this one. Education has the problem that it often assumes pre-existing knowledge and attitudes that its targets do not always have, often because of inadequate school and tersiary education. These include inadequate knowledge of science and scientific methods, of critical thinking, added to which a general lack of mindfullness and questioning attitudes.

In conclusion, different metaphors and frames should be geared to the intended targets one wishes to influence. There is a place for war talk, ridicule, education and probably for many additional frames I did not think about. So let the fight against pseudoscience continue (metaphorically)!

More views on metaphors and framing:

Grey, W. (2000). Metaphor and Meaning.

Iyengar, S. (2005). Speaking of Values: The Framing of American Politics.

Ward et al. (2008). Metaphors are mindfunnels (Mainly reflecting George Lakoff's views). Hat tip to Sonja from Narrativelab for this last reference.

Monday, December 1, 2008

Neuromythologies in Education

I place this abstract as a whole and unchanged, as it reflects much of what this blog is about and says it better than I can. Hat tip to Monica Pignotti, contributing to Psychologists Educating Students to Think Skeptically (PESTS-I) , for this reference and abstract.

Geake, J. (2008). Neuromythologies in Education. Educational Research, 50, 2 123 – 133.

Abstract:

Background: Many popular educational programmes claim to be 'brain-based', despite pleas from the neuroscience community that these neuromyths do not have a basis in scientific evidence about the brain.

Purpose: The main aim of this paper is to examine several of the most popular neuromyths in the light of the relevant neuroscientific and educational evidence. Examples of neuromyths include: 10% brain usage, left- and right-brained thinking, VAK learning styles and multiple intelligences

Sources of evidence: The basis for the argument put forward includes a literature review of relevant cognitive neuroscientific studies, often involving neuroimaging, together with several comprehensive education reviews of the brain-based approaches under scrutiny.

Main argument: The main elements of the argument are as follows. We use most of our brains most of the time, not some restricted 10% brain usage. This is because our brains are densely interconnected, and we exploit this interconnectivity to enable our primitively evolved primate brains to live in our complex modern human world. Although brain imaging delineates areas of higher (and lower) activation in response to particular tasks, thinking involves coordinated interconnectivity from both sides of the brain, not separate left- and right-brained thinking. High intelligence requires higher levels of inter-hemispheric and other connected activity. The brain's interconnectivity includes the senses, especially vision and hearing. We do not learn by one sense alone, hence VAK learning styles do not reflect how our brains actually learn, nor the individual differences we observe in classrooms. Neuroimaging studies do not support multiple intelligences; in fact, the opposite is true. Through the activity of its frontal cortices, among other areas, the human brain seems to operate with general intelligence, applied to multiple areas of endeavour. Studies of educational effectiveness of applying any of these ideas in the classroom have failed to find any educational benefits.

Conclusions: The main conclusions arising from the argument are that teachers should seek independent scientific validation before adopting brain-based products in their classrooms. A more sceptical approach to educational panaceas could contribute to an enhanced professionalism of the field.