THE EFFECT ON THE BEHAVIOR OF CHILDREN, AS REFLECTED IN THE IQ SCORES, WHEN REINFORCED AFTER EACH CORRECT RESPONSE

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Abstract
This experiment studied the effect on intelligence test scores of a probable reinforcer given for correct responses. Eleven pairs of 5‐ to 7‐yr‐old children were matched on the basis of a strong liking of candy, no physical problems associated with eating it, parent permission to receive and eat the candy, age, sex, and a revised Stanford‐Binet Scale Form L IQ score. The control group was given the revised Stanford‐Binet Scale Form M, as prescribed in the test manual. The experimental group was also given Form M according to the manual, except M&M candy was given for each plus or correct response. There was an appreciable, statistically significant difference between the resulting IQ test scores of the two groups.