This study examined identity development in a 5-wave study of 923 early-to-middle and 390 middle-to-late adolescents thereby covering the ages of 12–20. Systematic evidence for identity progression was found: The number of diffusions, moratoriums, and searching moratoriums (a newly obtained status) decreased, whereas the representation of the high-commitment statuses (2 variants of a [fore]closed identity: “early closure” and “closure,” and achievement) increased. We also found support for the individual difference perspective: 63% of the adolescents remained in the same identity status across the 5 waves. Identity progression was characterized by 7 transitions: diffusion → moratorium, diffusion → early closure, moratorium → closure, moratorium → achievement, searching moratorium → closure, searching moratorium → achievement, and early closure → achievement.

Meeus, W., Van de Schoot, R., Keijsers, L., Schwartz, S. J., & Branje, S. (2010). On the Progression and Stability of Adolescent Identity Formation. A Five-Wave Longitudinal Study in Early-to-Middle and Middle-to-Late Adolescence. Child Development, 81(5), 1565–1581.

The BFs as reported for RQ 1 in Table 2 (p. 1574) should have been BF 2,1 = 15,514 and BF2,unc = 21.41. The PMP values of M1, M2, and M3 should have been: < .001, .95 and .05, respectively. The conclusions from the analysis do not change because of the corrected results.

We elaborated on what went wrong in the following paper.
Van de Schoot, R. & Meeus, W. (2014). Various positions on testing Inequality constrained hypotheses for LTA results. 

Do not hesitate to contact me with questions regarding the new results.

Wim Meeus
Professor Adolescent Psychology
Wim specializes in longitudinal adolescent studies, particularly regarding the development of personality and identity, personal relations and problematic behavior.
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