Compassion
Being moved by another's suffering and wanting to relieve it.
What it means
Compassion is the emotion that arises on perceiving another's suffering together with a motivation to relieve it. It differs from empathy, which mirrors another's feelings: compassion adds an other-focused, caring appraisal, judging the suffering as serious and often undeserved, and it orients the person toward the sufferer rather than away. Physiologically it recruits the mammalian caregiving system, marked by parasympathetic engagement and a warm, approach-and-soothe quality rather than the aversive arousal of shared distress. Because compassion is regulated and other-focused, it tends to be more sustainable and less depleting than raw affective empathy, and compassion training (as opposed to empathy alone) has in some trials increased prosocial behavior — though the best meta-analytic evidence suggests these prosocial gains are modest and partly inflated by allegiance and weak-control bias.
The appraisal and the body
Compassion begins with an appraisal, not just a feeling. Goetz, Keltner and Simon-Thomas argue it is triggered specifically by perceiving another's suffering as serious and, often, undeserved, and that this appraisal recruits the mammalian caregiving system rather than the threat system. The distinction shows up in the body: where fear speeds the heart, compassion is marked by parasympathetic, or vagal, engagement. Stellar and colleagues found that people induced to feel compassion showed slowed heart rate and higher respiratory sinus arrhythmia than in neutral or other positive states, and that this physiological signature tracked both self-reported and observer-rated compassion. The approach-and-soothe orientation, leaning toward the sufferer rather than away, is what gives compassion its warm, steady quality instead of an aversive one.
Two systems, two brain networks
The sharpest evidence that compassion and empathy are not one thing comes from training studies. Klimecki, Leiberg, Ricard and Singer first had participants practise empathy, resonating with others' pain, which raised negative affect and activity in the anterior insula and anterior midcingulate cortex, regions tied to shared distress. A later block of compassion training reversed the negative affect, increased positive affect, and engaged a separate network spanning the ventral striatum, pregenual anterior cingulate and medial orbitofrontal cortex, areas linked to reward and affiliation. The practical reading is that empathy alone can tip into distress and withdrawal, while compassion couples concern with a positive, approach-oriented state, a plausible reason it is less depleting to sustain.
What the evidence shows
Compassion looks cultivable and useful, within limits. Weng and colleagues trained adults in compassion meditation for two weeks and found they later redistributed more money to a wronged stranger in an economic game than an active-control group did, with the behavioural shift tracking altered prefrontal and reward-circuit activity. At clinical scale, Kirby, Tellegen and Steindl's meta-analysis of 21 randomised trials with 1,285 participants found moderate benefits across depression, anxiety, distress and wellbeing, with a notable effect on depression of about d = 0.64. These are respectable rather than dramatic effects, drawn mostly from short programmes and self-report questionnaires rather than from sustained behaviour toward real people over time.
Limits and caveats
Enthusiasm has run ahead of the strongest data. A systematic review by Kreplin, Farias and Brazil found the prosocial payoff of meditation, compassion practice included, smaller and less certain than headlines imply: measured compassion rose reliably only when the meditation teacher was also an author of the study, or when the comparison was a passive waitlist rather than an active control, both hallmarks of expectancy and allegiance bias. Much of the field still leans on brief interventions and questionnaires. Compassion also carries a partiality problem: it is easily aroused by a single identifiable victim and dulled by statistics, so more of it is not automatically better guidance for decisions that touch many people at once.
Examples
Seeing a homeless man shivering, you feel a steady, warm pull to act and bring him a hot meal, rather than just feeling his cold.
A colleague's father dies and you find yourself not only aching for her but quietly rearranging your week to cover her deadlines — the pull toward doing something is what marks compassion out.
Watching flood coverage, one viewer feels overwhelmed and changes the channel; another feels moved and steady enough to set up a monthly donation. Only the second is compassion doing its work.
A nurse on a long shift notices a frightened pre-op patient, pauses to explain what will happen and warm his hands, a steadying act rather than a raw catch of his fear.
A neighbour who barely knows the couple next door hears they are floundering after a premature birth and quietly takes over their dog-walking and grocery runs for weeks, bearing a real cost rather than offering a passing word of sympathy.
First described in Goetz, Keltner & Simon-Thomas (2010); compassion-training research by Singer and colleagues.
Key references
- Kreplin, U., Farias, M., & Brazil, I. A. (2018). The limited prosocial effects of meditation: A systematic review and meta-analysis. Scientific Reports, 8, 2403. doi.org/10.1038/s41598-018-20299-z
- Kirby, J. N., Tellegen, C. L., & Steindl, S. R. (2017). A meta-analysis of compassion-based interventions: Current state of knowledge and future directions. Behavior Therapy, 48(6), 778-792. doi.org/10.1016/j.beth.2017.06.003
- Stellar, J. E., Cohen, A., Oveis, C., & Keltner, D. (2015). Affective and physiological responses to the suffering of others: Compassion and vagal activity. Journal of Personality and Social Psychology, 108(4), 572-585. doi.org/10.1037/pspi0000010
- Klimecki, O. M., Leiberg, S., Ricard, M., & Singer, T. (2014). Differential pattern of functional brain plasticity after compassion and empathy training. Social Cognitive and Affective Neuroscience, 9(6), 873-879. doi.org/10.1093/scan/nst060
- Weng, H. Y., Fox, A. S., Shackman, A. J., Stodola, D. E., Caldwell, J. Z. K., Olson, M. C., Rogers, G. M., & Davidson, R. J. (2013). Compassion training alters altruism and neural responses to suffering. Psychological Science, 24(7), 1171-1180. doi.org/10.1177/0956797612469537
- Goetz, J. L., Keltner, D., & Simon-Thomas, E. (2010). Compassion: An evolutionary analysis and empirical review. Psychological Bulletin, 136(3), 351-374. doi.org/10.1037/a0018807