Adults vary their haptic exploratory behavior reliably with variation both in the sensory input and in the task goals. Little is known about the development of these connections between perceptual goals and exploratory behaviors. A total of 36 children ages 3, 4, and 5 years and 20 adults completed a haptic intramodal match-to-sample task.…

Supplementary stimulation was supplied for 30 minutes per day for approximately six weeks to 156 normal, full-term institutionalized infants prior to adoption. The Gesell Developmental Schedules were administered regularly (until age 27 months), to determine whether development had been enhanced by the treatment. (JMB)

Discusses changes occurring in two-, four-, and six-month-old infants' visual attention span, through a series of experiments examining their ability to orient to peripheral visual stimuli. The results obtained were consistent with the hypothesis that infants get faster with age in shifting attention to a spatial location. (AA)