Object Permanence Research Has Found That

Object permanence research has found that

A) it is a purely cognitive task and physical task demands have, at most, a very limited impact.
B) toddlers who watch a lot of television tend to develop object permanence at a later age.
C) toddlers who do not achieve object permanence still have normal cognitive development.
D) object permanence responding may be influenced by the time interval between seeing and being able to reach for it.