“…To test the psychometric properties of a scale, quality criteria for content validity, internal consistency, criterion validity, construct validity, reproducibility, longitudinal validity, responsiveness, floor and ceiling effects, interpretability and model fit, need to be met (Singer, 1998; Terwee et al, 2007). Moreover, cooperative knowledge production in various phases of the research creates a relevant instrument that could be applied, accepted and valued in the practice of social work (Depauw and Driessens, 2017; van Dop et al, 2016). In this study, we performed some preliminary tests on content validity, internal consistency and construct validity by performing a principal factor analysis and adapted the WAMC-I through the use of focus groups.…”