This paper reviews, first, experimental studies of perceptual-cognitive development and related work directed to the assessment of infant intelligence and, second, naturalistic observation of the exploratory patterns of infants during free play. Techniques used, such as the Fagan Test of Infant Intelligence, offer the potential to identify…

The development of and relationship between early language, symbolic play, sensorimotor skills, and social development were examined in a longitudinal study conducted in Japan with two young autistic males who were observed from the approximate ages of 2 to 4 years in clinic, day care, and home settings. One child acquired speech; the other did…

Describes a program developed to help parents become effective playmates. Suggests that interactive play between infants and adults has numerous benefits, although these benefits will not occur automatically; they require parents to develop the appropriate skills. Proposes methods to facilitate play and make an important contribution to the…