Identity developmental trajectories in adolescence and young adulthood: based on the five dimensional model

[Speaker] Hatano, Kai:1
[Co-author] Sugimura, Kazumi:2
1:Osaka Prefecture University (Japan), 2:Hiroshima University (Japan)

Luyckx and colleagues extraverted the five dimensions from previous identity theory (i.e., two commitment dimensions, two proactive explorations, and one maladaptive exploration), and one cross-sectional study showed that two commitment and two proactive exploration dimensions increased and maladaptive exploration decreased from adolescence to adulthood (Luyckx et al., 2013). In this study, we examine the longitudinal changes of the five identity dimensions during adolescence and young adulthood. We conducted a three wave longitudinal research (The time interval was one year) with 1,851 Japanese adolescents and young adults. A latent growth curve modeling analysis revealed that the two commitment dimensions and two proactive exploration dimensions increased and one maladaptive exploration decreased during early and middle adolescence; on the other hand, the pattern of identity change in young adulthood was rather different from that in adolescence. These findings suggest that identity develops toward integration during adolescence, but it is unstable during young adulthood.
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