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	Exercise Addiction Inventory (EAI)	Questionario di Autodescrizione Fisica (PSDQ)
Campo	Psicologia dello sport	Psicologia dello sport
Famiglia	Process / pipeline	Process / pipeline
Anno di origine	2004	1994
Ideatore	Adrian Terry, Attila Szabo, Mark Griffiths	Herbert W. Marsh, Geoffrey E. Richards
Tipo	Self-report exercise addiction/dependence screening questionnaire	Self-report multidimensional physical self-concept questionnaire
Fonte seminale	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.	Marsh, H. W., Richards, G. E., Johnson, S., Roche, L., & Tremayne, P. (1994). Physical Self-Description Questionnaire: Psychometric properties and a multitrait-multimethod analysis. Journal of Sport & Exercise Psychology, 16(3), 270–305.
Alias	EAI, Exercise Dependence	PSDQ, Physical Self-Concept
Correlati	4	4
Sintesi	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.	The PSDQ is a 40-item questionnaire measuring multidimensional physical self-concept—how individuals perceive and evaluate themselves across 11 physical domains including strength, endurance, body appearance, sports competence, and fitness. Developed by Marsh and colleagues in 1994, the PSDQ has become the leading instrument for assessing physical self-concept in youth and adult athletes and is valuable for understanding body image, exercise motivation, and psychological wellbeing.