Used an event-based approach to study the nature of coordination in 3- and 6-month olds during interaction with their caregivers. Found that infants coordinated their vocalizations and facial actions more than expected by chance. When two communicative events were temporally associated across modalities, one event tended to be embedded within the…

An intervention study with mothers and infants is discussed. The project staff consisted of two home visitors, a materials specialist, an infant examiner, and a project coordinator. This study assessed the effectiveness of the program for mothers and infants. Infant abilities and psychological development were tested and homes were rated. One home…

This paper discusses a longitudinal, exploratory study of developmental dimensions related to object permanence theory and explains how multidimensional scaling techniques can be used to identify developmental dimensions. Eighty infants, randomly assigned to one of four experimental groups and one of four counterbalanced orders of stimuli, were…