The Toronto Adolescent Longitudinal Study was launched in 1977 to examine personality development in a non-clinical sample of children from ages ten through 19 over an eight year period. Following a description of their conceptualized model of personality and of the nature of the study, the authors summarize their findings which suggest new perspectives in three areas of adolescent personality development: 1) the subphases of adolescence, 2) the routes of passage through which adolescents proceed, and 3) adolescent turmoil.
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