Perfectionism discrepancy and falling short of the ideal self: Investigating drinking motives and impaired control on the road to alcohol-related problems

•Discrepancy was directly linked to more coping and conformity-motives.•Coping, enhancement, & conformity-motives were linked to more impaired-control.•Social-motives were linked to less impaired-control.•High-standards were linked to more social-motives and thus, less impaired-control.•Coping-motives and impaired-control mediated discrepancy on alcohol-outcomes. Self-Discrepancy Theory (Higgins, 1987) predicts that the difference between the ideal and the actual self will be associated with impaired-control-over-drinking (IC; dysregulated drinking beyond one's own limits) as well as alcohol-related-problems. According to Slaney et al. (2001) perfectionism is a multi-faceted personality trait which represents both adaptive (e.g. high-standards) and maladaptive (e.g. discrepancy) aspects. In particular, discrepancy has been associated with poorer coping approaches, which may suggest a Self-Medication route to IC. Yet, to date, no one has examined whether drinking-motives (e.g., social, enhancement, coping and conformity) mediate the relations between discrepancy and high standards and alcohol-outcomes such as IC. We used a structural equation model to test indirect associations of discrepancy and high-standards to both heavy-episodic-drinking and alcohol-related-problems through the mediating mechanisms of drinking-motives and IC. Results supported the distinction between discrepancy and high-standards consistent with the Self-Medication Hypothesis (Hersh & Hussong, 2009). Discrepancy was associated with poorer alcohol-outcomes through greater coping-motives, conformity-motives and IC. In contrast, higher-standards were associated with fewer alcohol-outcomes through less coping-motives, conformity-motives, and IC. This study illustrates the importance of personality factors such as discrepancy in the development of problematic alcohol-use suggesting that it might be a good target for intervention. [Display omitted]