We applied both a cross-sectional design and an experience sampling method to the study of compulsive buying. A sample was drawn from Prolific Academic comprised of undergraduate students in the U.S., which was supplemented by a sample of undergraduate students who attended a public university in the northeast U.S. Results from the cross-sectional design revealed that lower detachment and higher antagonism conceived by the DSM-5's dimensional model of pathological personality traits, as well as lower pain of paying (the anticipated negative affect associated with spending one's money), predicted greater compulsive buying. Results from the experience sampling design indicated that higher antagonism was related to increased spending preoccupation, and that greater interpersonal conflict was related to both greater spending behavior and increased spending preoccupation. Finally, results revealed a moderation effect for detachment and academic load on spending behavior such that those who were high in detachment and reported a lower academic load engaged in more spending habits. Results are discussed in terms of how pathological personality traits and spending habits are impacted by interpersonal constructs that influence spending habits.
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