兄的性格と弟的性格

DOI NDLデジタルコレクション

書誌事項

タイトル別名
  • ELDER-BROTHER-LIKE AND YOUNGER-BROTHER-LIKE
  • 双生児研究その一

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説明

Problem. Despite their similarities, it is known that there are some personality differences between members of a pair of identical twins. According to the observations of Suwa and Okada, it seems that some of these differences may be reduced to the differences between elder-brother-like characteristics and younger-brother-like characteristics. These differences may be dependent on (1) the japanese family system in which elder son and younger son are differently treated by parents and other members of the family and (2) the superior-inferior relationship or inter-depending relationships due to differences in physical and mental capacities between two members who are essentially identical and are always compared by others. As the first approach to these problems, the authors tried to make up a convenient questionnaire to evaluate elder-brother-like personality and younger-brother-like personality. Subjects and procedures Based on Suwa and Okada'sobservations on fraternal personality differences, a questionnaire consisting of 45 items was composed. Each item described on behavior characteristic. The subjects was expected to answer whether this characteristic was more dominant in him or in his brother. If it was difficult to decide, the subject was allowed to check "not known." This questionnaire was answered by 31 pairs of mal identical twins, 24 pairs of female identical twins, and 274 boys (76 from residentical quarters, 105 from commercial and industrial quarters of Tokyo and 93 from rural area) and 256 girls (62, 96, 98 respectively). The non-twin all had siblings of the same sex and the age difference being less than 3 years. All subjects were 12-14 years old.

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