Perceptual justifications
Is there a differential impact of they type of exposure to new lexical items that the children
receive on their provision ofperceptual justifications?
• The provision of "perceptual" justifications did not differ significantly by group.
Do children ,s provision ofperceptual justifications increase with increased exposure to the
lexical items?
• The Definition group during post test 3 provided significantly fewer ''perceptual''
justifications than in post test 1.
Does the children ,s prior knowledge of the lexical items influence the provision ofperceptual
justifications?
• No significant differences were found.
Is the provision ofperceptual justifications influenced by the semantic domain of the lexical
items?
• Children provided more ''perceptual" justifications for the words describing animals
than the words describing artifacts. The differences were found to be significant for
post test 3. The same pattern was found for each group, however the differences were
not significant.
Semantic justifications
Is there a differential impact of they type of exposure to new lexical items that the children
receive on their provision of semantic justifications?
• During post test 1 and 2 the Definition group provided significantly more ''semantic"
justifications than the Ostensive definition and Lexical contrast group.
Do children ,s provision ofperceptual justifications increase with increased exposure to the
lexical items?
• No significant differences were found over time.