Human Services News

From EurekAlert! - Breaking News:

Kids seem to grow into the ability to act in pursuit of goals outside of what they can immediately sense sometime around that age, according to a new study published in the February issue of the Journal of Experimental Psychology: General, published by the American Psychological Association (APA).

Researchers found that by around age 3, children appear to shape their behavior in response to the outcomes they've come to expect.

At the University of Cambridge, a trio of psychologists trained 72 children between 18 months and 4 years old, divided into three 10-month age bands (averaging 1.3 to 2.2 years, 2.3 to 3.075 years, and 3.08 to 4 years) to touch a red or green butterfly icon on a touch-screen display to see different cartoon video clips.

The children came to associate one butterfly with one cartoon sequence and the other butterfly with another.

After that, the experimenters devalued one of the outcomes by showing that sequence repeatedly, until the children became bored with it.

Thus, the less-viewed cartoon clips became, by contrast, more interesting and valuable.

The researchers then re-tested the children, who should now have associated one butterfly with a valued cartoon and the other butterfly with a less-valued cartoon.

During that test, the cartoons were not actually presented; the children had to rely on their memories of which butterfly icon produced which cartoon.

Co-author Ulrike Klossek, PhD, points out that although all the children were sensitive to changes in outcome value and preferred the less-repeated cartoon, only the older children actually acted in a way that, based on their experience, would get them their favorite cartoon.

"One possible interpretation is that the period between 2 and 3 years of age brings about a transition in behavioral control from stimulus-outcome learning to fully intentional goal-directed action," the authors wrote.

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