手法を比較

	Physical Self-Description Questionnaire (PSDQ)（身体自己認識質問票）	Sport Confidence Inventory (SCI)
分野	スポーツ心理学	スポーツ心理学
系統	Process / pipeline	Process / pipeline
提唱年	1994	1986
提唱者	Herbert W. Marsh, Geoffrey E. Richards	Robin Vealey
種類	Self-report multidimensional physical self-concept questionnaire	Self-report sport-specific confidence trait questionnaire
原典	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.	Vealey, R. S. (1986). Conceptualization of sport-confidence and competitive orientation: Preliminary investigation and instrument development. Journal of Sport Psychology, 8(3), 221–246.
別名	PSDQ, Physical Self-Concept	SCI, Trait Sport Confidence
関連	4	4
概要	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.	The SCI is a 13-item questionnaire measuring general, trait-level confidence in sport ability—the athlete's habitual belief in their capability to execute skills and perform well in their sport. Developed by Vealey in 1986, the SCI is one of the most widely used instruments for assessing athlete self-confidence and predicting competitive success and psychological wellbeing.