Abstract
This study investigated the relationship between evaluative conditioning (EC), reinforcement sensitivity, and risk-taking on a simulated slot machine in a lab setting. Participants (51 female, 49 male, mean age 21.01 years [SD = 2.49] healthy adults) completed an EC paradigm with both negative unconditioned stimuli (negative EC) and positive unconditioned stimuli (positive EC). A negative EC by positive EC interaction effect indicated that those who did not show negative EC or positive EC gambled with lower average bet-size compared to the other participants. Scores on the fight-flight-freeze system (FFFS) and scores on the behavioral approach subscale Reward responsiveness (BAS-RR) were positively associated with average bet-size. An FFFS by BAS-RR interaction effect showed that participants who scored low on both BAS-RR and FFFS had lower bet-sizes compared to the other participants. These findings suggest that conditionability and reinforcement sensitivity play a role in gambling behavior.
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