The assessment of self and collective efficacy in volleyball

GUICCIARDI, MARCO;FADDA, DANIELA;Delitala L.

2011-01-01

---

Abstract

Self–efficacy is defined as belief in one’s capabilities to organize and execute the courses of actions required to produce given attainments. Perceived Collective efficacy is defined as a group's shared belief in its conjoint capabilities to organize and execute the courses of action required to produce given levels of attainments (Bandura, 1997). To evaluate self and collective efficacy in Italian volleyball players at different competitive levels we have constructed some non-hierarchical scales to assess specific aspects relevant for this sport, as emotions regulation, approach to training, technical/tactical capabilities and communication. A preliminary version was administrated to different samples using two_formats of rating scales: an 11-point and a 5-point Likert scale. Statistical analysis led us to choose the 5-point scale format (Guicciardi, Fadda and Delitala, 2010) and revealed a factorial structure composed of four dimensions. Based on the results of this study a new version of the questionnaires was created and it was named VEBS (volleyball efficacy beliefs scales).Efficacy scales were administered to an élite sample (n=133) along with other psychological tests (TEOSQ, GEQ, BIG FIVE) to verify the structural validity. The scales showed adequate values of skewness and kurtosis and values of Cronbach‘s alpha ranging from .69 to .95. Good fit indices emerged in CFA for self-efficacy (÷2=74.4, df=59, CFI=.97, TLI=.97, RMSEA=.05) confirming the four factors model. In conclusion, the structural validity of efficacy scales (of VEBS) has been confirmed, as well as their relationships with the task-orientation, cohesion and some personality traits (energy and openness).