Donal McEvoy refers to Wason on Popper. If there is one preposition
philosophers love is "on" -- at least analytic philosophers. I think I've read
essays on "Mr. A on Mr. B. on Mr. C. on Mr. C." but others may have extra and
more multiple examples.
McEvoy refers to Wason on Popper on four occasions -- two per sentence:
In a message dated 2/16/2016 5:59:56 A.M. Eastern Standard Time,
donalmcevoyuk@xxxxxxxxxxx writes:
"This was the central insight of Wason (who thought Popper's _LdF_ correct
logically but not as a description of how most of us tend to think) and it
is the insight that underpins the well-known Wason Test."
And later:
"Given Wason problems have the same logical structure: it is not that "we"
sometimes solve these problems correctly because we sometimes think
logically but because sometimes our psychology leads us to the right result
though it is the same psychology that leads us to the wrong result in other
cases (e.g. in the case of a Wason test re 'inspecting for underage drinking'
we are psychologically primed to look for cheating and so seek confirmation
of cheating i.e. our wrongheaded confirmationist approach leads, by this
psychological route, to simulate a correct falsificationist one."
He concludes:
"I think you get the drift."
Yes, I get a Wasonian drift -- I actually feel it, too.
Wason, whose first name was Peter (as Strawson's) is judged by some to
have laid the foundations for the modern study of reasoning -- and it is
perhaps a 'pity' that Grice does not quote from him in his "Aspects of
Reason",
which OTHERS think laid the foundations for the best study of reasoning.
For the record, Peter Cathcart Wason was a psychologist, not, like
Strawson and Grice, a philosopher.
He was born at Bath (so-called because of the favourite Roman occupation:
long thermal baths in the middle of the countryside).
Like Popper, Wason was engaged in academia in London (London Uni, if you
must, and University College if you must-must).
Why is Wason important?
Well, while not a philosopher, he still challenged the orthodox view of
his time that people were by nature basically rational and logical,
demonstrating, by the ingenious construction of novel experimental tasks, a
range of
what are now known as "cognitive biases".
In so doing, he laid the foundations for the modern study of reasoning.
After a childhood – by his own account – of "failing school exams with
monotonous regularity" and then officer training at Sandhurst, Wason became a
liaison officer in the 8th Independent Armoured Brigade and was injured in
Normandy in 1945.
Meanwhile, Grice was becoming a captain and engaged in action in the
Mid-Atlantic.
Wason read English at New College (or as I prefer, "New") at Oxford
(obviously), where he met his wife Marjorie Salberg.
When they met, obviously, she wasn't his wife, but you get the drift.
In 1950, he decided to start again by reading for a degree in Psychology at
University College London.
This was not convenient for Griceians, for had Wason stated 'with the
dreaming spires,' he would have become a Griceian.
Wason stayed at "University" (+> College, London) for the rest of his
academic career.
Following his PhD and a period of work as a research fellow, in he was
appointed to the position of Reader in Psycho-Linguistics -- i.e. the study of
how we Griceianly process utterances.
Wason's love of English and English literature had an impact on this work
in psychology in several ways, and in the later part of his career he
undertook research into the psychology of writing (and reading).
He was extremely interested in the art of writing (not so much reading) and
took great pains to impose the highest standards on his PhD students.
He wrote with great clarity and conviction in his own publications, and
this is one of the major causes of his influence.
However, he could be as hard on himself as on his students.
On one occasion he wrote several drafts of an entire book before abandoning
it, as he was not satisfied with the final product.
The fact that his wife IMPLICATED, "Don't judge a book by its cover" didn't
help; since by the time she implicated this, the book didn't even have a
cover.
His other great passion was chess, which he played only by correspondence –
but to a very high standard – eventually achieving the standing of
International Master in this form of play. Grice also loved chess, but he
played
only by telephone and only with George Myro.
Of Wason's publications, probably the most influential was his long essay,
"Psychology of Reasoning: structure and content" (co- authored by P.N.
Johnson-Laird).
Like Grice's and Strawson's "In defense of a dogma", co-writing is a
fascinating psychological phenomenon. Grice would start the sentences and
Strawson would finish them.
Wason's and Johnson-Laird's essay was focused mostly on the psychology of
reasoning.
The essay develops several new tasks and paradigms for the study of
reasoning that are heavily used to this day, as well as founding a tradition in
the study of cognitive biases.
In this context, the term "bias" refers to the tendency of people to err in
systematic ways relative to a logical analysis of the problems they are
set.
("When Popper read that he was fascinated" -- I'm paraphrasing)
Wason's work was influenced by two academic "giants" of his period:
-- the Austrian philosopher Sir (as he then wasn't) Karl Popper and
-- the great Swiss psychologist Jean Piaget (In Occitan, "Jean" is
masculine).
Popper had devised a highly influential philosophy of "science" that
founded the doctrine of falsificationism.
For centuries, philosophers had battled with the so-called "problem of the
justification of induction", which is that no amount of confirmatory
observations can prove the truth of a general claim, such as a scientific law
("All ravens are black," to use Reichenbach's example).
Popper proposed that the object of science was not to confirm theories, but
rather to falsify them, a process which is logically sound.
Only that zoologists are hardly curious as to how unblack a raven can be?
Good theories would survive this effort and endure. Today, the blackness of
the raven is explained via genetics.
Wason took Popper's 'conceptual' analysis to be the correct foundation for
hypothesis testing, which he studied psychologically through tasks of his
own devising.
Contrary to Popper's strictures, Wason claimed on the basis of his
experiments that people had a strong confirmation bias.
Wason writes: "In the real world the fixated, obsessional behaviour of some
of the subjects would be analogous to that of a person who is thinking in
a closed system – a system which defies refutation, e.g. existentialism or
the majority of religions. These experiments demonstrate how dogmatic
thinking and the refusal to entertain the possibility of alternatives can
easily
result in error."
When philosophers started to speak of nonmonotonic reasoning, Wason was
impressed. "All birds fly, except if that bird is a penguin or an ostrich or
...'. This is called by philosophers (Wason is not one) 'ceteris paribus
reasoning'. And the clause, "If x is a bird ----cp----> x flies" is referred
to as a ceteris-paribus conditional, or 'if'. Lawyers used them a lot, and
indeed Hart makes 'defeasibility' one criterion for a law to be a law.
Piaget's developmental theory of human intelligence was enormously
influential. Piaget proposed that children develop through a series of
well-identified stages, until as adults they finally achieve the ability for
formal,
abstract thinking and logical reasoning.
Wason, whose interest was in ADULT reasoning, strongly contested Piaget's
analysis, demonstrating repeated evidence of "illogical reasoning" -- or
what philosophers would have as invalid reasoning -- and bias in his adult
subjects – mostly his own undergraduate students at University (+> College,
London).
It is said that the Uni committee once told him that he should stop
criticising University (+> College, London) students, as it gave the uni a
'bad
reputation'.
Wason's work was based mostly on the reasoning task that he most famously
invented, the four-card selection task, known as the Wason selection task.
Wason described the selection task as "deceptively simple" (and questioned
the English of authors unfortunate enough to describe it as "deceptively
difficult").
Wason's implicature seems to be that nothing can be 'deceptively difficult'
-- unless it is.
By this Wason meant that while the selection task did look easy and
straightforward, it was in fact very hard.
Perhaps he was reading Grice's Causal Theory of Perception at that time,
which focuses on those examples: "That pillar box looks red to me; but
perhaps it ain't". The redness of the pillar box is a 'deceptively complex'
for
the causal theorist of perception.
Only about 10 per cent of people get Wason's problem right, and these were
later discovered to be those who are very high in general intelligence.
Although a problem in logical reasoning, it has been known to defeat
professors.
Writing of the task Wason writes: "the selection task reflects [a tendency
towards irrationality in argument] to the extent that subjects get it wrong
. . . It could be argued that irrationality rather than rationality is the
norm."
This may be behind Grice's later emphasis that rationality is a
value-oriented concept, an ideal. When Grandy/Warner were thinking of an
acronym for
their Clarendon book (Clarendon told them: "No Grice in the title: that
won't sell") they came up with "Philosophical Grounds of Rationality:
Intentions, Categories, Ends", or P. G. R. I. C. E. for short!
Not all contemporary scholars agree with Wason. But it has to be granted
that Wason's reasoning problems live on.
In particular, many hundreds of psychological experiments have been and
continue to be published in which the Wason selection task is used to inform
our understanding of human thinking -- and it has to be granted that Wason's
early familiarity with Popper did help to inform his views.
Cheers,
Speranza
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