Investigated whether and when children establish various semantic relations between old and new words. Fifty 2-year olds were taught labels for objects previously referred to by an overextended term. Findings are discussed in light of theories of lexical development, particularly with regard to conceptualizations of constraints on the acquisition…

The hypothesis explains the early lexical development of children and the predictions of this hypothesis are shown to be consistent with available data on overextension. (Author/NCR)

Studies the perceptual relationship between temporal "before" and "after" and their spatial counterparts. Adults reported temporal "before" related to spatial "after" and temporal "after" related to spatial "before." Three-year old children better understood spatial "after" and spatial "before," suggesting a temporal/spatial semantic acquisition…