Is performance on the multiple choice task influenced by the semantic domain of the lexical
items?

• No significant differences were found for the whole sample. On the other hand, the
group analysis revealed that the Ostensive definition group performed significantly
better on the multiple choice task when the target words described artifacts than
animals.

To what extent does the child’s prior lexical knowledge (Comprehension and Naming)
influence performance on the multiple choice task?

Baseline Comprehension Vocabulary

• Children with high level baseline comprehension vocabulary performed better than
children with low level comprehension vocabulary across testing however, the
differences were not significant.

• Separate analysis for each group demonstrated the same pattern, however no
significant differences were found.

Baseline Naming Vocabulary

• Children with high level baseline naming vocabulary performed significantly better
than those with low level baseline naming vocabulary across testing. Separate
analysis for each group demonstrated the same pattern. Significant differences were
found for the Definition group during post test 2.

Concluding remarks for the multiple choice task

► The analysis of the multiple choice task indicates that the Definition group performed
better than the Control, Phonological control, and Ostensive definition groups. No
significant differences were found in children’s performance across testing.
Furthermore, children with high naming vocabulary performed better than children
with low naming vocabulary in the Multiple choice task. Overall, no significant
differences were found in children’s performance by their prior knowledge of the
target words and by the semantic domain of the lexical items.

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