Breiman, L., Friedman, J.H., Olshen, R.A. and Stone., C.J. (1984) Classification and Regression Trees. 1st edition. Boca Raton, FL.: Chapman and Hall/CRC.

Bályi, I. and Williams, C. (2009) Coaching the young developing performer. Leeds, Coachwise.

Chi, M. (2006) Two approaches to the study of experts' characteristics. In: The Cambridge handbook of expertise and expert performance. K.A. Ericsson, N. Charness, P.J. Feltovich & R.R. Hoffman (Eds.), Cambridge: Cambridge University Press. 21-30.

Côté, J., Strachan, L. and Fraser-Thomas, J. (2009) Participation, personal development and performance through youth sport. In: Positive youth development through Sport. Ed: Holt, N. London: Routledge. 34-46.

De Bruin, A., Rikers, R. and Schmidt, H. (2007) The influence of achievement motivation and chess-specific motivation on deliberate practice. Journal of Sport & Exercise Psychology 29, 561-583.

Duda, J. (2001) Achievement goal research in sport: pushing the boundaries and clarifying some misunderstandings. In: Advances in motivation in sport and exercise. Ed: Roberts, G. Champaign, IL: Human Kinetics. 129-182.

Elferink-Gemser, M.T., Visscher, C., Lemmink, K. and Mulder, T. (2004) Relation between multidimentional performance characteristics and level of performance in talented field hockey players. Journal of Sport Sciences 22, 1053-1063.

Elferink-Gemser, M.T., Visscher, C., Lemmink, K. and Mulder, T. (2007) Multidimensional performance characteristics and standard of performance in talented youth field hockey players: a longitudinal study. Journal of Sport Sciences 25, 481-489.

Ericsson, K.A., Prietula, M.J. and Cokely, E.T. (2007) The making of an expert. Harvard Business Review July-August, 115-121.

Figueiredo, A., Gonçalves C.E., Coelho e Silva, M. and Malina, R. (2009) Youth soccer players 11-14 years: maturity,size, function, skill, and goal orientation. Annals of Human Biology 36(1) 60-73.

Gill, D. (1988) The relationship of competitiveness and achievement orientation to participation in sport and nonsport activities. Journal of Sport & Exercise Psychology 10, 139-150.

Gonçalves, C.E., Figueiredo, A. and Coelho e Silva, M. (2009) Multidimensional analysis of dropout in youth basketball: 2-year follow-up among portuguese initiates. In: Children an Exercise XXIV. Eds: Jurimae, T., Armstrong, N. and Jurimae, J. London: Routledge. 190-195.

Gould, D., Dieffenbach, K. and Moffett, A. (2002) Psychological characteristics and their development in Olympic champions. Journal of Applied Sport Psychology 14(3), 172-204.

Harwood, C., Cumming, J. and Fletcher, D. (2004) Motivational profiles and psychological skills use within elite youth sport. Journal of Applied Sport Psychology 16, 318-332.

Helsen, W.F., Hodges, N.J., Van Winckel, J. and Starkes, J.L. (2000) The roles of talent, physical precocity and practice in the development of soccer expertise. Journal of Sport Sciences 18, 727-736.

Malina, R., Bouchard, C. and Bar-Or, O. (2004) Growth, maturation and physical activity. 2nd Edition. Champaign, Ill.: Human Kinetics.

Martindale, R., Collins, D. and Daubney,J. (2005) Talent development: a guide for practice and research within sport. Quest 57(4), 353-375.

McArdle, S. and Duda, J. (2004) Exploring social-contextual correlates of perfectionism in adolescents: a multivariate perspective. Cognitive Therapy and Research 28(6), 765-788.

Miller, B., Roberts, G. and Ommundsen, Y. (2005) Effects of perceived motivational climate on moral functioning, team moral atmosphere perceptions, and the legitimacy of intentionally injurious acts among competitive youth football players. Psychology of Sport & Exercise 6, 461-477.

Nicholls, J.G. (1989) The competitive ethos and democratic education. Cambridge: Harvard University Press.

Roberts, G. (2001) Understanding the dynamics of motivation in physical activity: the influence of achievement goals on motivational process. In: Advances in motivation in sport and exercise. Ed: Roberts, G. Champaign, Ill.: Human Kinetics. 1-50.

Sarrazin, P. and Guillet, E. (2001) Mais pourquoi ne se réinscrivent-ils plus! Variables et processus de l'abandon sportif [Why they don´t come back! Variables and process of dropout in sport]. In: Théories de la motivation et pratiques sportives. Ètat des recherches. [Theories of motivation and sport participation. State of the art]. Eds: Cury, F. and Sarrazin, P. Paris: PUF. 223-254.

Sage, L. and Kavussanu, M. (2007) The effects of goal involvement on moral behavior in an experimental manipulated competitive setting. Journal of Sport & Exercise Psychology 29(2), 190-207.

Smith, R., Smoll, F. and Cumming, S. (2007) Effects of a motivational climate intervention for coaches on young athletes' sport performance anxiety. Journal of Sport & Exercise Psychology 29(1), 39-59.

Spence, J.T. and Helmreich, R.L. (1983) Achievement-related motives and behaviours. In: Achievement and achievement motives: Psychological and sociological approaches. J.T. Spence, J.T. San Francisco, CA: W.H. Freeman and Company. 10-74.