Particularly, during post test 2, the Definition group performed significantly better than the
Ostensive definition (Wilcoxon: Z=5.8, p<.0005) and the Lexical contrast group (Wilcoxon:
Z=5.2, p<.0005). During post test 3 the Definition group provided significantly more
definitions than the Control (Wilcoxon: Z=2.4, p<.05) and the Phonological control
(Wilcoxon: Z=5.4, p<.0000) and the experimental groups (Wilcoxon: Z=4.6, p<.0000; Z=
4.07, p<.0000). In addition the Lexical contrast group provided significantly more definitions
than the Control (Wilcoxon: Z=2.4, p<.05) and the Phonological control group (Wilcoxon:
Z=2.4, p<.05). Diagram 7.3 demonstrates the significant differences between the groups.
Diagram 7.3 Significant group differences in the provision of definitions across testing
Abbreviations: Co=Control; Pc∕Phono.co=Phonological control; Ostdefin.=Ostensive definition; Lex. contr. Lexical contrast
Does children 's provision of definitions increase with increased exposure to the lexical
items?
All the children provided significantly more definitions during post test 2 than post test 1
(Wilcoxon: Z=2.1, p<.05), more definitions during post test 3 than post test 2 (Wilcoxon:
Z=3.4, p<.0005) and post test 1 (Wilcoxon: Z=3.4, p<.4.8, p<.0000). In addition all the
experimental groups provided more definitions over time.
Particularly, the Ostensive definition group during post test 3 provided significantly more
definitions than in post test 1 (Wilcoxon: Z=2.2, p<.05) and post test 2 (Wilcoxon: Z=2.4,
p<.05). The Lexical contrast group provided significantly more definitions in post test 3 than
in post test 1 (Wilcoxon: Z=2.8, p<.005) and Post test 2 (Wilcoxon: Z=2.4, p<.05). The
Definition group provided significantly more definitions in post test 2 than in post test 1
211
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