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

doi:10.4236/psych.2015.68098

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

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DOI: 10.4236/psych.2015.68098 3,030 Downloads 3,756 Views Citations

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Itsuki Yamakawa¹, Masaki Muranaka¹, Shinji Sakamoto²

Affiliation(s)

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

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

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

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.

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