The article presents the results of the Identity Resilience Index (IRI) technique adaptation in Russian-speaking sample (N = 175) in 2023. IRI measures the degree of identity resilience as a cumulative assessment of the respondent’s self-esteem, self-efficacy, continuity and uniqueness. Factor analysis made it possible to clarify the internal IRI structure: 4 scales were identified. Cronbach’s alpha coefficients for all scales range from 0,915 to 0,883, which indicates good internal consistency. Internal and external validation checks were carried out. IRI scales demonstrated many positive and negative correlations with the scales of other techniques. The Russian version of the Identity Resilience Index can become a reliable and valid tool for determining the level of person’s identity resilience.

The article presents the results of an empirical test of the three-factor model of the need for belonging. The work is aimed at clarifying the boundaries of the phenomenon of the need for belonging in the theory of self-determination by E. Desi and R. Ryan. The three factors identified through the focus group and oral survey have no empirical justification. The model was tested on the basis of three groups of people who have differently frustrated need for belonging: the homeless (12 men (age: 28–55 years), 12 women (age: 32–63), people with drug addiction (2 men (age: 30 and 55 years old), 6 women (age 20–40 years old) and bullying victims (7 women (age 31–48 years old) and one man (31 years old). Their answers were compared with the conditional norm. Total study participants — 57 people: 34 women (age 2063 years), 23 men (age 2655 years). Three independent factors were identified, which, in the first approximation, confirmed the theoretical model.