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Abstract: 5-6 years old children, chosen by a pretest and classified into two di-fferent levels, participated in a right/left judgement training task eitherwith a peer, or with an adult, or alone. An immediate posttest was admin-istered to see how much progress would be induced by the different typesof training. Analysis was focused on 1)whether a conflict of judgementcould occur between peers of the same level and how they eventually so-lved such conflicts; 2) whether a child could benifit from the interactionwith the adult who gave him explanations as well as contersuggestions;3) whether a child working alone was aware of the contradictions in hisown judgements; 4) in what way the above problems were related to chi-ldren's initial level and to their progress as identified at the posttest.

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