Reliability and validity of the Adult Learning Inventory among medical students

Abstract

Objective : To determine the internal consistency and construct validity of the Adult Learning Inventory (AL-i) among first year medical students in a Malaysian medical school. Methods : Cross sectional study was done on 196 first year medical student in Universiti Sains Malaysia (USM). The Cronbach’s alpha reliability analysis, exploratory factor analysis and confirmatory factor analysis were applied to measure internal consistency and construct validity of the AL-i respectively. These analyses were done using Predictive Analytics SoftWare (PASW) version 18 and Analysis of Moment Structure (AMOS) version 19. Result : A total of 196 medical students responded to this study. Exploratory factor analysis showed that two potential constructs would be extracted from the inventory. The confirmatory factor analysis showed the two factor model with six items had a good fit with the latent constructs (X 2 (df) = 25.63 (8), p = 0.048, RMR = 0.045, GFI = 0.974, AGFI = 0.933, NFI = 0.974, RFI = 0.951, IFI = 0.987, TLI = 0.975, CFI = 0.987, RMSEA = 0.07). Each domain of the final model of the AL-i has three items. The Cronbach’s alpha value of the AL-i was 0.72. The Cronbach’s alpha values of andragogy and pedagogy domains were 0.87 and 0.86 respectively. Composite Reliability and Average Variance Extracted values were more than 0.6 and 0.5 respectively indicating good construct reliability and adequate convergent validity. Conclusion : This study suggested that the two factor model with 6 items of the AL-i has a good fit and shown good psychometric values. It is a valid and reliability measurement to determine types of leaner among first year medical students.