Abstract
This preregistered study aimed to replicate and extend research on the role of cognitive control in creative cognition by examining dose effects of alcohol in a randomized controlled trial. A sample of 125 participants was randomly assigned to three experimental groups, either drinking alcoholic beer (BAC=0.03 or 0.06) or drinking non-alcoholic beer (placebo-control group). Before and after the alcohol intervention, participants completed two tests of cognitive control and two established creative thinking tasks. A BAC of 0.06 led to an impairment of verbal fluency, while working memory performance was unaffected at both alcohol levels. Alcohol had no facilitative or detrimental effects on creative thinking performance, neither in terms of RAT performance, divergent thinking fluency or divergent thinking creativity. These results indicate that moderate alcohol levels have dose-dependent, selective effects on cognitive control, and that minor impairments of cognitive control do not generally increase or attenuate creative thinking performance.
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