Estimating the Stability Reliability of a Score

The internal consistency and factorial validity of the 6-factor Scale of Coaching Performance (SCP; MacLean &; Chelladurai,1995) were examined using the responses of 448 administrators and coaches, randomly selected among NCAA programs. Confirmatory factor analysis, alpha coefficients, composite reliabilities, and variance extracted measures were utilized to test the internal consistency, reliability, and factorial validity of the SCP. The original 6-factor model was also tested against possible alternative models. The SCP had weak factor reliabilities: the public relations behaviors factor had an unacceptable reliability coefficient. The fit statistics (χ²p;= 2641.72; Scaled χ² = 2141.70, p < .001; RMSEA = .081; GFI = .74) indicated unsatisfactory factorial validity of the 6-factor model using the NCAA sample, because of problematic indicators and weak independence of latent variables but none of the alternative models provided better fit to the NCAA data. The SCP may be population-specific to the Canadian athletic system, which differs from the system found in the United States. Further analytic efforts are needed to improve the generalizability of SCP.