The main research objective of this study was seeking the predictive role of closeness to parents, attachment, identity style, identity commitment, type of relationship, and having children in intimacy among young women and men. Many studies indicate differences in the level of engagement, communication, and satisfaction in relationships. The study group comprised 227 people, including 114 women (M = 29.99; SD = 4.36), and 113 men (M = 30.00; SD = 4.33). A total of 40% of the subjects were married, and the remaining 60% subjects were in informal relationships; 101 people had children and the other individuals were childless. The following instruments were used: The Miller Social Intimacy Scale, questionnaires to assess closeness and attachment, and the Identity Style Inventory. The significance of the differences and the stepwise regression analysis were performed. The results of the study demonstrated a higher level of intimacy in a relationship with a partner among women than men. The nature of a relationship does not matter to the sense of intimacy. However, closeness to parents during childhood and adolescence, the model of interpersonal relations, and the identity style are predictors of intimacy in a relationship. The study results can be used in creating preventive and educational programs focused on family life and satisfied relationships.

The article attempts to define the relationship between cognitive competences and identity styles in different periods of life: adolescence, early, middle and late adulthood. It also examines whether there are differences between the age groups in the dominant style of identity and in cognitive competences (formal and post-formal thinking). The 495 participants: 192 adolescents, 131 young adults, 91 adults and 81 seniors were tested in a baseline study using the Test of Formal Thinking (Horneman, Longeot) and the Identity Styles Questionnaire: ISI-3 (Berzonsky). In an additional pilot study, 281 participants: 166 adolescents, 87 young adults and 28 seniors were tested by means of the “Everyday problems” method (Sebby, Papini). The results show that early and middle adults in comparison with adolescents revealed a higher level of formal reasoning. In all age groups, the Informational Style of identity prevailed, followed by the Normative and Diffused styles, but with age the level of Commitment and the intensity of the Informational and Normative Style of identity changed. Among adolescents, there was a negative correlation between TOF scores and Commitment and Normative Style, while a positive but low correlation was found between the level of formal thinking and the level of Commitment in the senior group. The analysis of the results of the additional study in which the links between the identity styles and the level of post-formal reasoning were tested indicates that there is a stronger correlation compared to the measurement of the relationship between the identity styles and the level of formal thinking in each age group.