The purpose of this study was to compare a high-interaction (HI) friend and a low-interaction (LI) friend. Undergraduates, 166 men and 140 women, 306 in total, were asked to imagine a HI or LI friend, and complete a 98-item questionnaire concerning functions of the friendship. Results indicated that most undergraduates had both HI and LI friends. And “support” and “shared activity” characterized HI friendship, whereas “ease of mind,” “mutual understanding,” and “expectation of long-term tie” did LI friendship.
The purpose of this study was to develop Japanese version of Paranoia Checklist (JPC), in order to assess persecutory ideation in a non-clinical population. One hundred and twenty undergraduates completed JPC, the Paranoia Scale, and Peters et al. Delusions Inventory (PDI). Results revealed that JPC had one-factor structure and high internal consistency. JPC scores had positive correlations with scores of the Paranoia Scale and PDI. The results of the present study suggested that JPC had high reliability and validity as a measure of persecutory ideation.
The purpose of the present study was to investigate reliability and validity of Japanese version of the Primary and Secondary Psychopathy Scales. First, similar to the original scales, exploratory factor analysis of the data from a sample of 475 revealed two factors for the scale items. In addition, a sample of 77 provided good indication of internal consistency as well as test-retest temporal stability. Correlations with BIS/BAS scales and PANAS also gave support for the scales' validity. These and other results suggested that, with some reservations, the Japanese version had usefulness of the original scales to measure psychopathic tendencies.
This study examined the relationship between the Big Five personality and two dimensions of attachment, namely, anxiety and avoidance, in Japanese young adults. Junior college and vocational school students, 242 in all, participated in the study. Multiple regression analyses showed that Neuroticism and Agreeableness were predictors for anxiety, and Extraversion and Openness were predictors for avoidance. In addition, the coefficients of determination were relatively small. These results were almost the same as previous overseas studies. This suggested that although attachment dimensions had correlations with the Big Five personality to some extent, they measured different characteristics.
The purpose of this study was to examine the relationship between entering employment and mental health. A questionnaire was administered to 70 young women, before and after graduating junior college or university. Mental health and job satisfaction was measured. As a personality measurement, Cloninger's Temperament and Character Inventory was used. Results showed that low job satisfaction significantly worsened mental health after beginning to work. However, even when job satisfaction was low, mental health did not deteriorate if the person's reward dependence was high. The result indicated that reward dependent personality might have a buffering effect on mental health.