Mohri Ibuki

The purposes of the present study were to develop a Japanese version of the Schizotypal Personality Questionnaire (SPG) which comprehensively assesses schizotypy, and to investigate the multi-dimensionality of schizotypy. College students (N = 558) completed the Schizotypal Personality Questionnaire. The internal consistency of the scale and its test-retest reliability were sufficiently high (α=.63〜.86; r = .76 〜.86, respectively). The Schizotypal Personality Questionnaire also was found to have high convergent validity, in that the correlation coefficients between it and the Schizotypal Personality Scale were moderate. When confirmatory factor analysis was conducted with the sample to compare 7 possible models, a 3-factor model of disorganization provided the best fit. Furthermore, cluster analysis revealed that participants could be categorized into 4 clusters, including a "high schizotypy" cluster, a "positive schizotypy" cluster, a "negative schizotypy" cluster, and a "low schizotypy" cluster. This suggests that each factor is different from the others. Although these results do not confirm that the difference in the factor structures is a result of the continuity between schizotypy and schizophrenia, the 3-factor structure of schizotypy might provide some insights into the symptoms of schizophrenia.

The purpose of this study was to develop a Social Anxiety Scale by Social Situations (SASSS) assess the affective aspects of social anxiety in different social situations, and to investigate its reliability and validity. The SASSS contains 30 items that were generated based on the result of an open-ended questionnaire, which was answered by 135 undergraduate university students.<br>In a factor analysis of SASSS data from 518 undergraduates, five factors were selected and labeled as presentation/speech anxiety, distanced anxiety, heterosocial anxiety, silence anxiety and authoritative anxiety.These subscales of the SASSS were shown to possess a high level of internal consistency and test-retest reliability. The scales correlated well with established measures of social anxiety and trait anxiety. It appears that the SASSS is a reliable and valid measure of social anxiety by social situations.