Comparar métodos

	Escala de Motivación Deportiva (SMS)	Inventario de Adicción al Ejercicio (EAI)
Campo	Psicología del deporte	Psicología del deporte
Familia	Process / pipeline	Process / pipeline
Año de origen	1995	2004
Autor original	Luc Pelletier, Marc Fortier, Robert Vallerand	Adrian Terry, Attila Szabo, Mark Griffiths
Tipo	Self-report sport motivation questionnaire	Self-report exercise addiction/dependence screening questionnaire
Fuente seminal	Pelletier, L. G., Fortier, M. S., Vallerand, R. J., Tuson, K. M., Brière, N. M., & Blais, M. R. (1995). Toward a new measure of intrinsic motivation, extrinsic motivation, and amotivation in sports: The Sport Motivation Scale (SMS). Journal of Sport & Exercise Psychology, 17(1), 35–53.	Terry, A., Szabo, A., & Griffiths, M. D. (2004). The exercise addiction inventory: A new brief screening tool. British Journal of Sports Medicine, 38(4), 558–561.
Alias	SMS, SMS-6	EAI, Exercise Dependence
Relacionados	4	4
Resumen	The SMS is a 24–28 item questionnaire measuring the motivational reasons athletes engage in sport, organized along the continuum of Self-Determination Theory: from intrinsic motivation (inherent enjoyment, mastery, excitement) through extrinsic forms (identified goals, introjected norms, external rewards) to amotivation (lack of intent). Developed by Pelletier and colleagues in 1995, the SMS has become the leading instrument for assessing sport motivation quality and predicting athlete engagement, retention, and psychological wellbeing.	The EAI is a 6-item questionnaire measuring the risk of exercise addiction or exercise dependence—the compulsive continuation of exercise despite negative consequences and in response to withdrawal anxiety. Developed by Terry, Szabo, and Griffiths in 2004, the EAI is a brief, practical screening tool for identifying athletes and exercisers at risk for pathological exercise patterns that compromise physical health and psychological wellbeing.