Tested infants in their second year with a box task to determine whether they would show a hand preference in solutions involving complete differentiation of roles for the two hands. (HOD)

This study evaluated whether behaviors often taught as part of social skills training for individuals with mental retardation were judged favorably by 61 community judges. Results indicated that the skills of following instructions, accepting criticism, and negotiating were relevant to judgment of social performance and likely to be reinforced by…

Adopts a longitudinal design to track mother-child developmental change in infant task-related mastery and concomitant maternal behavior. Finds that, as infants gain more mastery across time, mothers gradually withdraw support in terms of concrete, specific and nonverbal means of instruction. Results support a one-step-ahead model for maternal…