Assessment of reliability and factor structure of the hypnotic induction profile (HIP) scale

The aim of this study is the assessment of reliability and factor structure of "Hypnotic Induction Profile" (HIP) scale in an Iranian psychiatric patient sample. The tool of measurement is HIP that calculated based on two methods of scoring (profile score and induction score). Results showed that the HIP scale is reliable. Cronbach's alpha internal consistency was .90 and calculated test-retest reliability of Induction Scores and also the Profile Scores were .74 and .80. Agreement coefficient between the two examiners for both scoring methods (Profile Score and Induction Score) was calculated .79 and coefficient correlation for the two scoring methods was .85. Furthermore, factor analysis validity of the HIP scale showed that this scale is constructed by two factors, and derived factors explain 74.94% of the total variance. In general, results in this study present enough reliability for the HIP scale. Concepts of these findings for future studies are discussed.