Tuesday, July 31, 2012

Children are beautifully adapted to learn about many possible worlds

From The Wisdom of Not Being Too Rational by Michael Balter.
The children were allowed five trials per experiment lasting 2 minutes each to learn the tasks. As might be expected, the older children did better than the younger children: By age 8, most children were able to successfully perform all three tasks during the first trial, and younger children required more trials, the researchers report today in PLoS ONE. But their performance contrasted in an important way with that of the birds. While the jays were able to learn the first two tasks by trial and error, they could not master the third experiment, in which the solution was not obvious and even counterintuitive.

Cheke and her colleagues conclude that this suggests a fundamentally different learning process between the birds and the children. Whereas the birds were put off by a seemingly physically impossible setup and couldn't learn the third task, children weren't stymied by the apparent impossibility of the task, but forged ahead and learned to raise the tokens anyway—even if it wasn't obvious how it was happening or the solution didn't seem to make intuitive sense.

"Children start off with no idea of what is possible and what is not possible," Cheke says. "If they did, they would never be able to learn. This is why children like magic, and why they will believe you when you tell them all kinds of fanciful things."

Alison Gopnik, an expert in child developmental psychology at the University of California, Berkeley, calls the study "fascinating and illuminating." The main difference between the birds and the children, Gopnik says, is that members of the crow family "have sophisticated but specific knowledge about how physical causal relationships work in the world," whereas children "seem to have broader and more wide-ranging causal learning abilities."

As a result, Gopnik adds, the birds "are beautifully adapted to learn about this world," but "children are beautifully adapted to learn about many possible worlds."
This strikes me as relevant to Stuart Kauffman's concept of adjacent possible. It would seem in this case that the adjacent possible for crows is simply a direct extension of acquired physical knowledge (put in a pebble and water rises) whereas for children the adjacent possible consists not only of extended knowledge but actually an extrapolation using imagination, analogy and metaphor. So that might prompt the question, does extensive childhood reading increase one's capacity to imagine, to think analogously and to think metaphorically and does that in turn improve one's problem solving capability?

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