The 15 items of the Mindful Attention and Awareness Scale (MAAS; Brown & Ryan, 2003) are negatively worded and assumed to assess mindfulness. However, there are indications of differences between the original MAAS and a version with the positively ...
Assessing construct validity is a core task in psychology. Since Campbell and Fiske’s (1959) seminal article on multitrait-multimethod (MTMM) analysis, several different methodological approaches for the analysis of convergent and discriminant validity of ...