Proceedings of the Annual Meeting of the Cognitive Science Society

Habits are difficult to induce and measure in human laboratory tasks, and putative behavioral indices of habits often fail to correlate with self-reported habitual tendencies. We recently developed a behavioral paradigm that reliably reveals overtraining-induced inflexibility within a single ~1-hour session, using a Habit Index (HI) that contrasts slips of action between extensively and minimally practiced contexts (Oh & Collins, 2025). Here, we test whether individual differences in HI reflect the same habitization process underlying real-life habits, by examining correlations between HI and self-report measures: the COHS Automaticity subscale, the Habitual Tendencies Questionnaire, and the Self-Report Behavioural Automaticity Index administered with respect to task behavior. Pilot data (N=106) showed positive associations between overall HI and these measures (_–ï.25–.35). We preregistered this correlational study (target N=200) and will present confirmatory results.