Właściwości polskiej adaptacji Inwentarza Stylów Tożsamości (ISI-5) Michaela Berzonsky’ego i współautorów
The characteristics of the Polish adaptation of Michael Berzonsky and co-authors’ Identity Style Inventory (ISI-5)

Summary/Abstract: This article contains the main assumptions of the social-cognitive model of identity construction by M. Berzonsky, the characteristics of the Polish adaptation of the Identity Style Inventory (ISI-5), a report from five studies conducted using this questionnaire, and an evaluation of the ISI-5’s Polish adaptation. We followed the guidelines provided by the authors of the ISI-5 (Berzonsky, Soenens, Luyckx, Smits, Papini, Goossens, 2013), adjusting our procedure and analysis of results to the original ISI-5 study. The results obtained showed the adaptation to have similar properties to its original. Confirmatory factor analysis (CFA) revealed the fit of the Polish data to the three-factor model of identity styles (RMSEA = .062; sRMR = .069; GFI = .90). Cronbach’s alpha reliability coefficients for ISI-5 scales were satisfactory and measured .68 for the Normative style scale, .77 for the Informational style scale, .71 for the Diffuse-avoidant style scale, and .80 for the Commitment scale. Intercorrelations between ISI-5 scales were also similar to those provided by Berzonsky et al. (2013). Correlations of ISI-5 scales with dimensions of identity (DIDS) and factors of personality (NEO-FFI) were approximate to the expected ones as well

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