A theory is presented to explain the perception of partially occluded objects and illusory figures, from both static and kinematic information, in a unified framework. This detailed theory of unit formation accounts for most cases of boundary perception in the absence of local physical specification. (SLD)

Eight experiments were conducted to examine 3- and 3.5-month-old infants' responses to occlusion events. The results revealed two developments, one in infants' knowledge of when objects should and should not be occluded and the other in infants' ability to posit additional objects to make sense of events that would otherwise violate their…

Three types of overgeneral uses of object names by young children were identified. Production data from 10 children were obtained using a standardized method of recording utterance contexts. Results showed that, like adults, children's object categories applied to objects of particular kinds. Most overgeneral uses were attributable to…