Objects can be grasped in different ways to ensure a movement plan is aligned with the intended action. The current study assessed grasp posture in joint action object manipulation in children (ages 6-11, n = 68), young adults (n = 21), and older adults (n = 23). Participants performed two actions (pickup and pass; pickup and pass for use) within…

Various developmental studies have demonstrated that implied object weight is a key variable in children's interpretations of motion, such as predicting the objects' speeds. An additional bias in predictions of object motion is representational momentum (RM), where objects are anticipated to be found in a location farther along in the direction of…

Recent work on the development of the perceptual information-seeking function of the hand in relation to its motor-executive function is reviewed. (PCB)

To establish baseline data on South African children's behavior, observed 80 children at home and interviewed the children's primary caregiver. Gathered data on patterns of interaction and language use, content of activity, and use of objects. Presents general biographical and behavioral data, notes gender differences, and compares this data to…