Background: Achievement motive is expected to prevent lack of self-efficacy and hope, which negatively impact rehabilitation support, health, and psychological well-being. It has been indicated that the factor structure of the Scale for Achievement Motive in Rehabilitation (SAMR), which was developed to evaluate the state of achievement motive in clients, is affected by gender, age, and type of disorder; however, the item responses for the SAMR have not been fully elucidated.
Purpose: This study demonstrates the effects of achievement motive on self-efficacy, hopelessness, and economic poverty. The secondary purpose was to test the psychometric properties for the robustness of factor analysis and the item responses for the SAMR.
Methods: A cross-sectional study was conducted to assess achievement motive, self-efficacy, hopelessness, and economic poverty in 581 community-dwelling elderly people. Data from a self-administered questionnaire were analyzed for structural relationship, using a structural equation modeling approach, multi-group confirmatory factor analysis, and multidimensional item response theory.
Results: For structural relationship, the modified model indicated an adequate model fit level {Comparative Fit Index (CFI) = 0.914, Tucker Lewis Index (TLI) = 0.906, Root Mean Square Error of Approximation (RMSEA) = 0.062, 90% Confidence Interval (CI) [0.058, 0.066]}, with significant effects among achievement motive, self-efficacy, and hopelessness; i.e., the direct and indirect effects of achievement motive on self-efficacy and hopelessness were accepted. For multi-group confirmatory factor analysis, the SAMR factor structure displayed strong measurement invariance across the group for gender, care level, and age. For multidimensional item response theory, the results showed enough item discrimination and difficulty intensity for each SAMR item.
Discussion: This study suggests that achievement motive is important to prevent clients from missing and giving up their goals and to execute support in rehabilitation smoothly. In addition, we suggest that SAMR is a structurally valid scale to measure two-factor structures across different groups, and the item characteristics and total score enable proper understanding of achievement motive.