The Effects of Audio-Guided Mindful Meditation on Physical Aggression Perpetration: Is It Effective for Everyone?

We examined whether the effects of a brief, guided mindful meditation (MM) exercise on aggression perpetration differed based on an individual's baseline ability to nonjudgmentally observe the present moment (i.e., dispositional mindfulness). One hundred two college students (56.1% women; 78.9% White) completed the Mindful Attention Awareness Scale (MAAS) and were randomly assigned to either a one-time 15-minute audio-guided meditation, mindful condition, or control condition before completing a shock-based laboratory aggression paradigm involving provocation by an ostensible opponent. All participants were coded as having either high or low levels of dispositional mindfulness based on a mean split of their MAAS score. Results indicated that participants with high levels of dispositional mindfulness displayed significantly less aggression in the MM condition relative to the control condition (d = .64). In contrast, participants with low levels of dispositional mindfulness displayed more aggression in the mindful condition relative to the control condition (d = .45), although this effect was not statistically significant. These findings suggest that individuals' baseline ability to nonjudgmentally observe the present moment has important implications for determining who may and may not benefit from audio-guided MM as a brief intervention for aggression.