Young infants perceive an object's trajectory as continuous across occlusion provided the temporal or spatial gap in perception is small. In 3 experiments involving 72 participants the authors investigated the effects of different forms of auditory information on 4-month-olds' perception of trajectory continuity. Provision of dynamic auditory…

Infants aged 3, 5, and 7 months were shown solid objects and comparable intangible images of objects both within and beyond possible arm's reach. The infants' emotional reactions and reaching behavior in the presence of the image stimuli were found to be very similar to their responses to the solid objects. (Author/JMB)

Eight stump-tailed macaques were reared individually and either given all of their daily social experience in darkness or given half in the dark and half in the light. Results suggest that vision is especially important in the maintenance of assertive behaviors and in the instigation and direction of aggressive behaviors. (Author/RH)

Children of 8 and 11 years and college students were tested for reorientation of visual attention to a target following a cue. The first, but not the second, experiment showed an interaction between distance of target from fixation and stimulus onset asynchrony. The second experiment suggested children can orient attention through valid, neutral,…

Three studies examined children's understanding of looking behavior in revealing another's desired goal. Found that 6-year olds and adults, but not 4-year olds, consistently regarded prolonged looking as a more important cue than glancing or inadvertent touching of the protagonist's goal. Results suggest that development is characterized by…