Developmental Changes of Judging Processes and Sex Differences in Judgement of Weights Addition

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This study aimed at clarifying differences in judging processes at grade levels in judgement of weights addition. Six to thirteen year-old children (total 222) were subjected to the task, and the 6- and 12-year-old children's performance were seen to go down. The error styles of each grade levels were examined and those grades were divided into two groups: high performing group (9-, 11-, 13-year-olds) and low performing group: 6-, 8-, 12-year-olds. The effects of correctional feedback were investigated in the latter one. The results showed: the 6-year-olds showed neither consistent errors, nor the effects of feedback; however among the 8-year-olds, the effects of feedback were observed in the experimental (feedback) group only, whereas the 12-year-olds presented the same error tendency as the 8-year-olds did and their performance went up in the control (non-feedback) as well as in the experimental group. Sex differences were observed on both performance and effects of feedback. From these results it was concluded that a poor performance does not necessarily correspond to a poor cognitive ability.

Original languageEnglish
Pages (from-to)327-332
Number of pages6
JournalThe Japanese Journal of Educational Psychology
Issue number4
Publication statusPublished - 1988
Externally publishedYes


  • U-shaped growth curve
  • effects of feedback
  • error styles
  • protocol analysis
  • sex difference

ASJC Scopus subject areas

  • Education
  • Developmental and Educational Psychology


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