TY - JOUR A1 - Opwis, Mareile A1 - Bartel, Eva Catrin A1 - Salewski, Christel A1 - Schmidt, Jennifer T1 - Sorry—Bad Habit! Validation of the German Self-Report Habit Index with a Test for Its Relation to Potentially Addictive Forms of Health-Risk Behaviors JF - International Journal of Mental Health and Addiction N2 - Habits are highly automated behaviors that have received renewed attention in addiction research. The Self-Report Habit Index (SRHI) is a widely used measure of habits. Two cross-sectional online studies aimed at validating a German version of the SRHI to assess two everyday health-risk behaviors: caffeine consumption and smartphone/tablet use. In both studies (N = 1310), the SRHI scales (one adapted for caffeine consumption, one for smartphone/tablet use), as well as corresponding addiction scales and health outcomes (study 1), or established validity measures (study 2), were assessed. Both SRHI scales showed satisfying item characteristics, high internal consistencies (αs > .90), adequate construct validity, and a three-factorial solution with a satisfying model fit (CFI/TLIs > .95, SRMRs ≤ 0.05). Highest correlations emerged between SRHI and addiction scales. The studies show that the German SRHI can be used to validly assess health-risk behaviors. The observed strong correlations of the SRHI scales with addiction scales suggest that (self-reported) habit is indeed an important aspect to consider in addiction research. KW - Habit KW - Addiction KW - Caffeine KW - Smartphone KW - Self Report Habit Index Y1 - 2023 UR - https://link.springer.com/article/10.1007/s11469-023-01057-3 U6 - http://dx.doi.org/https://doi.org/10.1007/s11469-023-01057-3 SN - 1557-1882 ER - TY - JOUR A1 - Opwis, Mareile A1 - Schmidt, Jennifer A1 - Martin, Alexandra A1 - Salewski, Christel T1 - Gender differences in eating behavior and eating pathology: The mediating role of rumination JF - Appetite Y1 - 2017 SN - 0195-6663 VL - 110 SP - 103 EP - 107 ER -