本研究の目的は,コミュニケーションに対する自信がアイデンティティと関連していることを実証することである。研究1では,大学生254名に質問調査を行い,「意図伝達への自信」,「意図抑制への自信」,「意図理解への自信」(3下位尺度)からなるコミュニケーションに対する自信尺度(Selfc-confidence in Communication Scale:SCS)を作成した。α係数の値から十分な信頼性が示され,またコミュニケーション・スキル,セルフ・モニタリング,自尊心との相関分析の結果から妥当性が検討された。研究2では大学生384名に対し質問紙調査を行い,SCSと多次元自我同一性尺度(Multiple Ego Identity Scale:MEIS)との関連を検討した。まずSCSに対し確認的因子分析を行い,因子構造の安定性を検討した。適合度は十分とは言えなかったが,概ね因子構造の安定性が確認された。そしてSCSとMEISの相関分析の結果から,SCSが心理社会的自己同一性と特に関連していることが示された。

The purpose of the present study was to examine the relation between self-confidence in communication and identity. In study 1,254 university students (18 to 25 years old, average age 19.8 years; 118 men, 136 women) completed a questionnaire. A Self-confidence in Communication Scale (SCS) was developed that had 3 subscales: the confidence to communicate your intentions, the confidence to suppress your intentions, and the confidence to understand others' intentions. The results of α coefficients showed sufficient reliability; correlations between communication skill, self-monitoring ability, and self-esteem demonstrated the validity of the Self-confidence in Communication Scale. In Study 2,384 university students (18 to 25 years old, average age 19.8 years; 165 men, 219 women) completed a questionnaire, and the relation between the Self-confidence in Communication Scale and the Multiple Ego Identity Scale (MEIS) was examined. Confirmatory factor analysis was conducted to examine the stability of the Self-confidence in Communication Scale. The goodness of fit was not sufficient, but the stability of the factor structure was confirmed. The results of a correlational analysis between the Self-confidence in Communication Scale and the Multiple Ego Identity Scale showed that the Self-confidence in Communication Scale was strongly related to psychosocial self-identity.