Validity and Reliability of the Interpersonal Sensitivity/Privileged Self Scale: Solving a New Type of Depression

Itsuki Yamakawa; Masaki Muranaka; Shinji Sakamoto

doi:10.4236/psych.2015.68098

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Psychology > Vol.6 No.8, June 2015

Validity and Reliability of the Interpersonal Sensitivity/Privileged Self Scale: Solving a New Type of Depression ()

Itsuki Yamakawa¹, Masaki Muranaka¹, Shinji Sakamoto²

¹Graduate School of Literature and Social Sciences, Nihon University, Tokyo, Japan.
²College of Humanities and Sciences, Nihon University, Tokyo, Japan.

DOI: 10.4236/psych.2015.68098 PDF HTML XML 3,462 Downloads 4,435 Views Citations

Abstract

Although “modern-type” depression (MTD), having different features than melancholic-type depression, has become problematic in Japan especially since the late 1990s, there are few psychological studies of MTD. Sakamoto, Muranaka, and Yamakawa (2014) proposed a psychological framework depicting the onset of MTD, and coined a new concept of interpersonal sensitivity/ privileged self, which is assumed to be a vulnerability factor for MTD. In the present study, we examined the validity and reliability of the Interpersonal Sensitivity/Privileged Self Scale (IPS; Muranaka, Yamakawa, & Sakamoto, 2014), which has two superordinate factors, namely Interpersonal Sensitivity (IS: 16 items) and Privileged Self (PS: 9 items). Because MTD is presumed to overlap with atypical depression, it was expected that the IPS score in an atypical depression group would be higher than in a melancholic depression group, and the IPS score would be positively correlated with the depressive symptoms. Participants were 112 (70 male, 42 female) Japanese undergraduates, aged 18 - 25 years (M = 19.19, SD = 2.07). Cronbach’s α of the IPS was 0.90 (IS: α = 0.91, PS: α = 0.72). As we predicted, the IPS, IS, and PS were positively correlated with depressive symptoms. ANOVAs revealed significant differences in the scores of the IPS, IS, and PS among depression types. Post-hoc analyses showed that scores for anatypical depression group were significantly higher than those for a melancholic group and an unclassified-type group. These results support our prediction that IPS scores manifest differently in MTD and melancholic depression; validity and reliability of the IPS were confirmed.

Keywords

Depression, Interpersonal Sensitivity, Personality, Atypical, Japanese Undergraduates

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Yamakawa, I. , Muranaka, M. and Sakamoto, S. (2015) Validity and Reliability of the Interpersonal Sensitivity/Privileged Self Scale: Solving a New Type of Depression. Psychology, 6, 1013-1021. doi: 10.4236/psych.2015.68098.

Conflicts of Interest

The authors declare no conflicts of interest.

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