Developing a scale of self-efficacy in personal relationships for adolescents

This study developed a scale of self-efficacy in personal relationships for adolescents and examined its reliability and the validity. The 40 items assessing tendencies theoretically linked to self-efficacy in personal relationships were administered to 344 junior and high school students. 207 high school students also were administered the Shimoda Personality Inventory. Three factors (Self-confidence in Personal Relationship, Trust in Friends, and Trust by Friends) were extracted by principal components analysis. The coefficient alpha reliabilities of these subscales were .90, .89. and .87. The validity was supported by correlations between the Total score of self-efficacy and the SPI subscales of Autistic trait -.53, Nervous Character trait -.13, Self-uncertain trait -.39, and Syntonic trait .57.