Linganisha mbinu

	Dakala la Kujieleza kwa Mwili (PSDQ)	Orodha ya Kujiamini Kimichezo (SCI)
Nyanja	Saikolojia ya Michezo	Saikolojia ya Michezo
Familia	Process / pipeline	Process / pipeline
Mwaka wa asili	1994	1986
Mwanzilishi	Herbert W. Marsh, Geoffrey E. Richards	Robin Vealey
Aina	Self-report multidimensional physical self-concept questionnaire	Self-report sport-specific confidence trait questionnaire
Chanzo asilia	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.
Majina mbadala	PSDQ, Physical Self-Concept	SCI, Trait Sport Confidence
Zinazohusiana	4	4
Muhtasari	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.