Efforts to elicit reliable testimony from children are frustrated by developmental limitations on children's communicative competence. This study examines (a) how children cope when adults ask incomprehensible questions, and (b) whether interview perfonnance can be enhanced by facilitating children's comprehension monitoring and response strategies. One hundred and eighty children, half 6 and half 8-years-olds, were assigned randomly within age group to 1 of 3 treatment conditions (training, instructions, control) and I of 2 interviewer conditions (familiar, unfamiliar). Children's memories of a previously staged event were tested with interview questions varying in comprehensibility. Results suggest that when confronted with difficult-to-comprehend questions regarding easily recalled information, children in the control group tried to answer anyway but were as likely to respond incorrectly as correctly. In contrast, when children were instructed to verbalize their lack of comprehension, and given a rationale for doing so, they performed significantly better than the control group. Moreover, when children received instructions and prepared for the interview with practice detecting and coping with noncomprehension, the training group demonstrated marked improvements in interview performance compared with the other 2 groups. Results demonstrate that although children's limited communication skills present a barrier to reliable testimony, it is one that might be minimized by instructions or preparation of child witnesses.
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