Perceptual and Motor Skills, 2011, 113, 2, 631-646. Perceptual and Motor Skills 2011

Development, 70, 660-677.
Rudolph, K. D. (2002) Gender differences in emotional responses to interpersonal 
stress during adolescence. Journal of adolescent Health, 30, 3-13.
Seligman, M. E. P. (2008) Positive health. International association of applied Psychol-
ogy: an International Review, 57, 3-18.
Shephard, R. J. (2003) Limits to the measurement of habitual physical activity by 
questionnaires. British Journal of Sports Medicine, 37, 197-206.
Sherar, L. B., Esliger, D. W., Baxter-Jones, A. D. G., & Tremblay, M. S. (2007) Age 
and gender differences in youth physical activity: does physical maturity matter? 
Medicine & Science in Sports & exercise, 39, 830-835.
SPSS, Inc. (2003) SPSS advanced statistics 14.0. Chicago, IL: Author.
Strong, W. B., Malina, R. M., Blimkie, C. J., Daniels, S. R., Dishman, R. K., Gutin, B., 
Hergenroeder, A. C., Must, A., Nixon, P. A., Pivarnik, J. M., Rowland, T., Trost, 
S., & Trudeau, F. (2005) Evidence-based physical activity for school-age youth. 
The Journal of Pediatrics, 146, 732-737.
Tabachnick, T. B., & Fidell, L. (2007) Using multivariate statistics. (5th ed.) Boston, 
MA: Allyn & Bacon.
Toussaint, L., & Friedman, P. (2009) Forgiveness, gratitude, and well-being: the medi-
ating role of affect and beliefs. Journal of Happiness Studies, 10, 635-654. Published 
online 12 August, 2008, Springer Science+Business Media B.V. DOI: 10.1007/
s10902-008-9111-8.
Trost, S. G., Pate, R. R., Sallis, J. F., Freedson, P. S., Taylor, W. C., Dowda, M., & 
Sirard, J. (2002) Age and gender differences in objectively measured physical 
activity in youth. Medicine & Science in Sports & exercise, 34, 350-355.
Veenhoven, R. (2003) Happiness. The Psychologist, 16, 128-129.
Vittersø, J., Oelman, H. I., & Wang, A. L. (2007) Life satisfaction is not a balanced 
estimator of the good life: evidence from reaction time measures and self-reported 
emotions. Journal of Happiness Studies, 10, 1-17.
Wessman, A. E., & Ricks, D. F. (1966) Mood and personality. New York: Holt, Rinehart 
and Winston.
accepted September 21, 2011.

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