Alicja Senejko

Michael D. Berzonsky’s Identity Style Inventory (ISI) – data of statistical assessment of the ISI Polish adaptation

The article consists of data connected to statistical assessment of the Polish adaptations of Michael Berzonsky’s method for diagnosing styles of identity and commitment – the Identity Style Inventory (ISI). At present his method appears in two versions: ISI3 (A. Senejko’s Polish adaptation) and ISI4 (A. Senejko and E. Okręglicka-Forysiak’s Polish adaptation). The article discusses at the issue of different forms of statistical assessment of both versions of the ISI. The paper also includes a short analysis of the theoretical model, which was the basis for Identity Style Inventory.

The basic aim of our theoretical and research activity is to prepare a research procedure and a theoretical basis for such procedure directed at diagnosing three possible ways of responding to trauma (absence of adaptation, adaptation and post-traumatic development) among people who were mentally stable before experiencing trauma. In subject literature, traumatic responses are most often described by grouping into three categories: absence of adaptation, adaptation, and post-traumatic growth (development). In our case study, we introduce two examined women, who had in common the type of traumas experienced. They are women between 29 and 32 years old (young adults) whose child had died in the last 3 to 5 years. We have therefore focused not on the description of individual steps in carrying out a single case diagnosing reaction to trauma, but on the presentation of preparing procedure for such a study, i.e. the description of consecutive steps that led us from the fi rst question: what model will we use for the analysis of response to trauma and why this model and not the other one? – to the last question: what set of methods will we use to investigate the response to trauma and why this one as opposed to some other? In this case study, we present ensuing answers to the questions raised together with their rationale, dilemmas and doubts accompanying their formulation.

The characteristics of the Polish adaptation of Michael Berzonsky and co-authors’ Identity Style Inventory (ISI-5)

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