There is a specific moment that most people experience without identifying it: you were assessing how your work was going, and without quite deciding to, you shifted to thinking about how someone else was doing. The feeling before and after that shift is different. The research now explains why — and the explanation is more structural than most people assume.

Comparison as a default when objective evaluation fails

Festinger’s 1954 foundational theory established that humans possess a drive to evaluate their own opinions and abilities, and that when objective means of evaluation are unavailable, this drive defaults to social comparison with other people. Comparison is not a preference — it is a functional default that activates automatically when concrete external standards are absent.

The critical implication is that social comparison is not a different strategy for the same task as self-evaluation. Self-evaluation asks how you are doing against a standard. Social comparison asks how you are doing relative to another person. The reference point is fundamentally different, the information sought is fundamentally different, and — as subsequent neuroscience established — the neural architecture that executes the two processes is fundamentally different.

The brain regions that distinguish the two processes

A coordinate-based meta-analysis synthesising 48 fMRI studies on self-appraisal, social feedback, and social comparison established a clear neural dissociation. Self-appraisal consistently and preferentially engaged the posterior cingulate cortex and dorsomedial prefrontal cortex — regions associated with self-referential processing, autobiographical memory, and narrative self-concept. Social comparison consistently and preferentially engaged the ventral striatum — the core node of the dopaminergic reward and relative-value evaluation network.

The ventral striatum activation during social comparison is not metaphorical. The reward system is encoding relative social standing in the same currency it uses to encode winning and losing in competitive games. When you compare yourself to someone and come out ahead, the ventral striatum fires. When you compare and come out behind, the anterior insula activates — a region consistently associated with physical pain, bodily threat, and social exclusion. Upward comparison does not produce abstract discouragement. It activates the same neural systems that process rejection and physical pain.

The relative outcome dominance finding

Fliessbach and colleagues’ 2007 Science study provided the most direct test of whether the brain’s reward system responds to absolute or relative performance. Pairs of participants performed the same task and received monetary rewards. The researchers varied whether the two participants received equal or unequal rewards for equal performance. Ventral striatum activation was significantly modulated by relative rather than absolute outcome — participants showed stronger ventral striatum responses when they outperformed a co-player than when they performed equally well but received a higher absolute payout.

The reward system was encoding social comparison information rather than absolute performance quality. This is the mechanism through which comparison distorts self-evaluation: once social comparison is initiated, the reward system’s reference point shifts from how you are doing against your goals to how you are doing against that person. An objectively good performance feels inadequate if the comparison target performed better. An objectively poor performance feels acceptable if the comparison target performed worse. The distortion is a feature of how the reward system prioritises social information — not a cognitive error that can be corrected through willpower.

Why upward comparison produces a physiological stress response

Takahashi and colleagues’ fMRI study demonstrated that anterior insula activation during upward social comparison — specifically during envy of another’s advantage — was directly proportional to subsequent ventral striatum activation when that person suffered a setback. The circuit connecting upward comparison to pain-like processing is the neural basis of the envy-to-schadenfreude pathway: the pain of being outperformed creates the conditions for relief when the comparison target fails.

For entrepreneurs, upward comparison with more successful competitors, better-funded startups, or more prominent peers activates the same neural systems that process physical pain and social exclusion — generating a stress response that impairs the executive function, creative thinking, and risk tolerance that entrepreneurial performance depends on. Comparison is not thinking. It is a threat response with the cognitive consequences of a threat response.

Social media has made comparison ambient rather than occasional

Festinger’s theory predicted that comparison is activated when objective self-evaluation fails. Social media has created an environment in which objective self-evaluation is continuously displaced by social comparison, because the platform is structurally optimised to present others’ relative performance — likes, followers, professional achievements, milestones — in a format that activates the ventral striatum’s relative-outcome sensitivity. Research on Facebook use found that heavy users with many weak-tie connections showed the strongest illusory superiority inversion: they consistently perceived others as doing better than themselves. The mechanism is exposure. Social media presents a curated, positive-highlight version of others’ lives with near-unlimited frequency, providing comparison targets continuously across the day in a way that Festinger’s original theory could not have anticipated. The comparison is not occasional and purposive. It is ambient and automatic.

Why comparison in identity-relevant domains is most psychologically costly

Tesser’s self-evaluation maintenance model established that comparison affects people differently depending on whether the domain of comparison is central to their self-concept. When a close other outperforms you in a domain important to your identity, comparison produces a threat to self-evaluation — the anterior insula response. When a close other outperforms you in a domain irrelevant to your identity, comparison produces positive affect.

For entrepreneurs who have built their self-concept around their venture — which is most entrepreneurs — the comparison trap is particularly acute because entrepreneurship is the domain central to their identity. A competitor who launches faster, raises more funding, or receives better press coverage triggers the threat response, not merely the information-processing response, because the domain of comparison is fused with the domain of self-definition. The entrepreneur who achieves a significant milestone may feel deflation rather than satisfaction if a comparable entrepreneur achieved the same milestone sooner or at greater scale — because the ventral striatum has already reset its reference point to the comparison outcome rather than the absolute achievement.

Book worth reading on this

The Status Game by Will Storr is the most directly applicable popular synthesis of the social comparison literature. Storr argues that status competition — the comparison drive that Festinger formalised and the ventral striatum encodes — is the primary organising force in human social behaviour, and traces its consequences through psychology, evolutionary biology, culture, and history with a range that makes the mechanism feel as large as it actually is. For any entrepreneur trying to understand why the comparison instinct is so difficult to simply decide to stop engaging with, Storr’s account of the evolutionary pressures that made relative standing a matter of survival provides the context that makes the neural findings intelligible.

If the dynamics described here are significantly affecting your wellbeing, speaking with a psychologist is the right next step. UK: Samaritans (116 123, free, 24/7). Mind (0300 123 3393). BACP: bacp.co.uk/search/Therapists. Crisis Text Line — text HOME to 741741 (US, UK, Canada, Ireland). International: internationaltherapistdirectory.com.

This article is for educational and informational purposes only. Sources: Festinger, L. (1954), A Theory of Social Comparison Processes, Human Relations, 7(2), 117–140. Fliessbach, K., Weber, B., Trautner, P., Dohmen, T., Sunde, U., Elger, C.E. & Falk, A. (2007), Social Comparison Affects Reward-Related Brain Activity in the Human Ventral Striatum, Science, 318(5854), 1305–1308. Gerber, J.P., Wheeler, L. & Suls, J. (2018), A Social Comparison Theory Meta-Analysis 60+ Years On, Psychological Bulletin, 144(2), 177–197. Takahashi, H., Kato, M., Matsuura, M., Mobbs, D., Suhara, T. & Okubo, Y. (2009), When Your Gain Is My Pain and Your Pain Is My Gain, Science, 323(5916), 937–939. Chou, H.T.G. & Edge, N. (2012), They Are Happier and Having Better Lives than I Am, Cyberpsychology, Behavior, and Social Networking, 15(2), 117–121. Tesser, A. (1988), Toward a Self-Evaluation Maintenance Model of Social Behavior, Advances in Experimental Social Psychology, 21, 181–227. Kedia, G. et al. (2014), fMRI meta-analysis of self-appraisal versus social comparison. Storr, W. (2021), The Status Game, HarperCollins. Kahneman, D. (2011), Thinking, Fast and Slow, Farrar, Straus and Giroux.