An empirical evaluation of the psychometric properties of the Sherer et al. general self-efficacy scale on the Zambian sample

Abstract

Background: The Sherer general self-efficacy scale (SGSES) is used to evaluate individuals’ levels of self-efficacy. With poor low productivity levels among Zambian organisations there is a great need of assessing employee’s self-efficacy in that self-efficacy is a predictor of employee performance (Bureau of African Affairs, 2012; Mills, 2010). However, the psychometric properties of the SGSES have not been established on a Zambian sample. This study therefore aimed at evaluating the reliability and construct validity of the SGSES among public service employees in Zambia. Methods: A survey research design using a quantitative research strategy was used to achieve the research objectives. The factorial structure models underlying SGSES were investigated using item analysis, exploratory factor analysis (EFA) as well as the confirmatory factor analysis (CFA) via structural equation modelling. Results: Statistical analyses provided acceptable fit of the measurement model with the empirical data. Conclusion: This study has demonstrated evidence of construct validity for the usage of the SGSES in the Zambian context.