Ling, M.-T., Pang, V., & Thurasamy, R.
The construct validation of leadership competency scale: Integration of Rasch and PLS-SEM
This paper aims to verify the construct validity of the Leadership Competency Scale by using Rasch analysis and PLS-SEM. The Malaysian Secondary School Students’ Leadership Inventory (M3SLI) was developed based on Tubbs and Schulz’s (2006) Leadership Competency Model. The Leadership Competency Scale (LCS) is one part of M3SLI. LCS was administered on a sample of 500 students aged 13-18 at six public schools in Sabah, Malaysia. Items were quantitatively investigated using WINSTEPS, based on the Rasch Measurement Model, to ascertain the fitness of items. The Smart-PLS 3.0 was used to assess the PLS-SEM results of the formative measurement models. Six items were omitted from the data set to produce valid measures. Furthermore, all sub-constructs are unidimensional and the category functions are acceptable based on the Rasch analysis. PLS-SEM analysis confirms the significant relationship between the formative indicators. Consequently, the construct validity of Leadership Competency Scale is established. Compliance of Rasch analysis into PLS-SEM takes into account the contribution of errors by every single indicator and provides an interval scale to run PLS-SEM, thereby reinforcing the construct validity of the instrument.
Testing, Psychometrics, Methodology in Applied Psychology, 2017, Vol. 24, pp. 269-283, DOI: 10.4473/TPM24.2.6Back