Children made age judgments on drawing of human figures, which consisted of adult, adolescent, child, and infant characterizations. (Author)

Results demonstrate that 12 - 15 - week-old male infants smile to nonsocial stimuli, and offers support for the recognition hypothesis of infant smiling. (Authors/MB)

Based on 25 white middle-class infants from 9 to 12 months of age, the earliest manifestation of obedience to appear was a simple disposition to comply with maternal commands and prohibitions, independent of efforts to train or discipline the baby. (Authors/RY)

A data analysis procedure for testing the hypothesis that one task is a developmental prerequisite for another task is illustrated. The procedure was applied to new data on the acquisition of conservation concepts to test the hypothesis that synthesis, visual-scanning skills, and memory capacity are prerequisites of conservation mastery. (JMB)

Behavioral pattern of deficits observed in dyslexic children is quite similar to adults who have sustained damage to the left cerebral hemisphere. (Authors)

It was tentatively concluded that identification may contribute to the recognition that moral principles and not external sanctions form the basis of right and wrong, but not to the application of these principles to one's own behavior in the absence of authority. (Author)

When high anxious mothers administered tasks to their children, they facilitated the task performance of their daughters but were strongly detrimental to that of their sons. Low anxious mothers chose more difficult tasks for sons than for daughters, and they facilitated the task performance of sons more than that of daughters. (Authors/RY)