The role of self-compassion in the relationship between rejection and unhealthy eating: An ecological momentary assessment study

Available studies suggest that experiencing interpersonal rejection heightens negative affect and, in turn, triggers unhealthy eating behaviors. Elucidating individual differences that attenuate the negative consequences of rejection could inform interventions targeting unhealthy eating. This study examined the buffering role of self-compassion in the relationship between rejection experiences and unhealthy eating behaviors, defined as snacking on junk food and overeating. Two-hundred undergraduate students (50% women) completed ecological momentary assessments measuring rejection experiences, emotions, and unhealthy eating seven times a day for 10 consecutive days. Self-compassion was measured after the 10-day assessment period. Reports of rejection were low (2.6%) in our university sample. Multilevel mediation analyses examined whether the relationship between experiencing rejection and subsequent unhealthy eating was mediated by negative affect. Multilevel moderated mediation analyses further considered whether relationships between rejection and negative affect and between negative affect and unhealthy eating were moderated by self-compassion. Experiencing rejection predicted more unhealthy eating behaviors at the next time point, and this relationship was fully explained by increases in negative affect. Participants with high levels of self-compassion experienced less intense negative affect after rejection and reported less unhealthy eating behaviors when feeling negative emotions, compared to their counterparts with lower levels of self-compassion. The indirect effect of rejection on unhealthy eating was moderated by self-compassion, and there was no statistically significant relationship between rejection and unhealthy eating behaviors among highly self-compassionate participants. Findings suggest that cultivating self-compassion may help attenuate the negative impact of rejection experiences on emotions and unhealthy eating behaviors.