50 Johnson D. Many Schools Putting an End to Child’s Play. New York Times (April 7 1998). P. 16. 51 Pellegrini A., Glickman C. The Educational Role of Recess // Principal 68. No. 5 (1989). P. 23–24. 52 Дэвид Элкинд (род. 1931) – профессор, еврейско-американский детский психолог, один из последователей Жана Пиаже; развил теорию детского эгоизма. 53 Симулятор игры в бейсбол. 54 Steinberg L., Silk J. Parenting Adolescents in Handbook of Parenting, vol. 1, edited by M. Bornstein. Mahwah, NJ: Lawrence Erlbaum, 2002. 55 Steinberg L., Morris A.S. Adolescent Development // Annual Review of Psychology 52 (2001). P. 83–110. 56 Larson R., Richards M.H. Divergent Realities: The Emotional Lives of Mothers, Fathers, and Adolescents. New York: Basic Books, 1994. 57 Goldstein B. Introduction to Human Sexuality. Belmont, CA: Star, 1976. 58 Graber J., Lewinsohn P., Seeley J., Brooks-Gunn J. Is Pubertal Timing Associated with Psychopathology in Young Adulthood? // Journal of the American Academy of Child and Adolescent Psychiatry 43 (1997). P. 718–726. 59 Peskin H. Pubertal Onset and Ego Functioning: A Psychoanalytic Approach // Journal of Abnormal Psychology 72 (1967). P. 1–15. 60 Booth A., Johnson D., Granger D., Crouter A., McHale S. Testosterone and child and adolescent adjustment: The moderating role of parent-child relationships // Developmental Psychology 39 (2003). P. 85–98. 61 Brumberg J. The Body Project: An Intimate History of American Girls. New York: Random House, 1997. 62 Body Mass Index, Livestrong.com (accessed October 6, 2010).