LAUSR

People who engage in nonsuicidal self-injury (NSSI) often state that it helps them feel better. We tested three hypotheses through which this mood modification might occur. Following a negative mood induction, adults reporting past year NSSI were randomized into a control (i.e., sitting alone quietly), mild distraction, or pain condition. All participants completed mood ratings at regular intervals. No mood repair occurred in the control condition. However, distraction improved mood both during and after the activity. Participants who self-administered pain reported no overall mood change, suggesting that contrary to popular NSSI theories, pain likely does not improve mood via distraction. However, as predicted, level of self-criticism moderated mood change during pain. Participants high on self-criticism felt significantly better during pain and participants low on self-criticism felt significantly worse during pain. Findings shed light on how NSSI improves mood by clarifying the circumstances under which different affect regulation processes may operate.