Interpersonal offenses frequently mar relationships. Theorists have argued that the responses victims adopt toward their offenders have ramifications not only for their cognition, but also for their emotion, physiology, and health. This study examined the immediate emotional and physiological effects that occurred when participants (35 females, 36 males) rehearsed hurtful memories and nursed grudges (i.e., were unforgiving) compared with when they cultivated empathic perspective taking and imagined granting forgiveness (i.e., were forgiving) toward real-life offenders. Unforgiving thoughts prompted more aversive emotion, and significantly higher corrugator (brow) electromyogram (EMG), skin conductance, heart rate, and blood pressure changes from baseline. The EMG, skin conductance, and heart rate effects persisted after imagery into the recovery periods. Forgiving thoughts prompted greater perceived control and comparatively lower physiological stress responses. The results dovetail with the psychophysiology literature and suggest possible mechanisms through which chronic unforgiving responses may erode health whereas forgiving responses may enhance it.

The extant data linking forgiveness to health and well-being point to the role of emotional forgiveness, particularly when it becomes a pattern in dispositional forgivingness. Both are important antagonists to the negative affect of unforgiveness and agonists for positive affect. One key distinction emerging in the literature is between decisional and emotional forgiveness. Decisional forgiveness is a behavioral intention to resist an unforgiving stance and to respond differently toward a transgressor. Emotional forgiveness is the replacement of negative unforgiving emotions with positive other-oriented emotions. Emotional forgiveness involves psychophysiological changes, and it has more direct health and well-being consequences. While some benefits of forgiveness and forgivingness emerge merely because they reduce unforgiveness, some benefits appear to be more forgiveness specific. We review research on peripheral and central nervous system correlates of forgiveness, as well as existing interventions to promote forgiveness within divergent health settings. Finally, we propose a research agenda.

We posit that humans have a propensity to forgive, under certain circumstances, that is every bit as intrinsic to human nature as the tendency to seek revenge when harmed. The human tendency to forgive is reliably elicited by social and environmental factors that lead victims to view their transgressors as worthy of care, potentially valuable to the victim in the future, and safe. The victim's personality characteristics may also influence the likelihood of viewing transgressors as careworthy, valuable, and safe. Using these categories, we review recent developments in the scientific study of the social and personality factors that promote forgiveness. We also review developments in the measurement of forgiveness, the links of forgiveness to health and well-being, and quantitative evidence regarding the effectiveness of interventions for promoting forgiveness.

This within subjects experiment (28 females, 26 males) examined three responses to a past interpersonal offender. We contrasted offense-focused rumination with two subsequent, counterbalanced coping strategies: compassionate reappraisal and emotion suppression. Compassionate reappraisal emphasized the offender's human qualities and need for positive change. Emotion suppression inhibited the experience and expression of negative offense-related emotions. Offense rumination was associated with negative emotion, faster heartbeats (i.e., shortened ECG R-R intervals), and lower heart rate variability (i.e., the HF component of the R-R power spectrum). By contrast, both compassionate reappraisal and emotion suppression decreased negative emotion in ratings and linguistic analyses, calmed eye muscle tension (orbicularis oculi EMG), and maintained heart rate variability at baseline levels. Suppression inhibited negative emotion expression at the brow (corrugator EMG) and slowed cardiac R-R intervals, but without forgiveness effects. Only compassionate reappraisal significantly increased positive emotions, smiling (zygomatic EMG), and social language along with forgiveness.

We tested the effects of practicing compassionate reappraisal vs. emotional suppression as direct coping responses to victims' ruminations about a past interpersonal offense. Participants (32 females, 32 males) were randomly assigned to learn one coping strategy which immediately followed three of six offense rumination trials (counterbalanced). For both strategy types, coping (vs. offense ruminating) reduced ratings of negative emotion, decreased the use of negative emotion language, and reduced tension at the brow muscle (corrugator EMG). Only compassionate reappraisal coping (vs. offense rumination) immediately prompted greater empathy and emotional forgiveness toward the offender. Empathy ratings for the first coping trial mediated the relationship between strategy type and empathy ratings for the final rumination trial. Compassionate reappraisal strategy participants increased their empathy toward the offender while ruminating at the end of the study. Compassionate reappraisal participants (vs. emotional suppression) described coping (vs. rumination) with more positive language, and also had calmer cardiac pre-ejection period responses.