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Roberta G. Simmons, Dale A. Blyth, Edward F. Van Cleave, Diane Mitsch Bush, Entry into Early Adolescence: The Impact of School Structure, Puberty, and Early Dating on Self-Esteem, American Sociological Review, Vol. 44, No. 6 (Dec., 1979), pp. 948-967
Simmons et al. (Sat,) studied this question.