There is a specific mental habit that most people engage in constantly and almost never examine: the assumption that they know what others are thinking about them. Someone gives an ambiguous look across a meeting table and the mind immediately fills in the content — they think the idea is weak, they’re bored, they noticed the nervous voice. An investor asks a probing question and the entrepreneur reads it as disinterest. A colleague doesn’t smile after a comment and it registers as disapproval. The assumption that one’s internal experience is visible, that one’s actions are being closely scrutinised, and that one’s thoughts can be accurately projected onto others is wrong in ways that are both measurable and consequential.

You overestimate how much others notice you — by roughly half

Gilovich, Medvec and Savitsky ran five studies directly measuring the gap between how much people believe they are noticed and how much they actually are. In the most cited study, participants wore a T-shirt featuring Barry Manilow — pretested as uncool among the student population — and walked into a room of peers. Participants estimated that approximately 50% of people in the room would recall the image on the shirt. The actual recall rate was 23%. The overestimation was more than double the reality.

The same pattern held for flattering images, embarrassing utterances in group discussions, and socially positive contributions. People overestimate how much their mistakes registered, how much their good ideas landed, and how visible their performance was in both directions. The mechanism is anchoring and insufficient adjustment: people start from their own vivid internal experience of the moment — the acute awareness of the embarrassing shirt, the stupid comment, the nervous voice — and attempt to adjust for the fact that others don’t share this vantage point. They adjust, but not nearly enough. Others are occupied with their own rich internal experience — their own concerns, their own impressions of the room, their own self-consciousness — and are not attending to what the observer assumes they are attending to.

You overestimate how visible your internal states are — by roughly 100 percent

Seven studies by Gilovich, Savitsky and Medvec tested the tendency for people to believe their internal emotional states leak out and are detectable by others far more than they actually are. In deception studies, participants told lies during a trivia game and estimated that observers would detect their lying 48.8% of the time. The actual detection rate was 25.6% — nearly half the estimated figure. In disgust studies, participants who drank an unpleasant beverage while attempting to conceal their reaction believed their disgust was visible approximately twice as often as observers could actually detect it.

The mechanism is the same as the spotlight effect — anchoring on one’s own phenomenological experience and adjusting insufficiently for others’ limited access to it — but the illusion of transparency specifically concerns internal states rather than external appearance. The person who is nervous during a pitch is not just overestimating how many people will notice their trembling voice. They are also overestimating how much their internal experience of nervousness is radiating outward and being registered as nervousness by the observer. In reality, observers do not have privileged access to the internal landscape of the person they are watching. The mind-reading assumption — that the other person knows you are nervous, uncertain, or disappointed — is reliably wrong in the direction of overestimating transparency.

The tapping experiment: the most direct illustration of the gap

Elizabeth Newton’s 1990 Stanford dissertation produced the clearest illustration. Tappers were asked to tap the rhythm of a well-known song while listeners attempted to identify it. Tappers predicted listeners would correctly identify the song 50% of the time. The actual identification rate was 2.5%. The tappers could hear the full melody in their head as they tapped — it was vivid, present, and comprehensible to them. Listeners heard only a sequence of taps. The tappers’ 50% prediction reflects their inability to step outside their own rich internal experience and evaluate what was actually communicated. The mind-reading failure is the assumption that the listener is having a similar internal experience to their own — which they are not, and cannot be.

You fill in others’ assumed thoughts with your own — and then treat the projection as evidence

Ross, Greene and House established the false consensus effect: people systematically overestimate the degree to which others share their own attitudes, beliefs, and perspectives. The mechanism is the availability heuristic applied to social estimation — one’s own perspective is maximally cognitively accessible, making it easy to generate confirming examples, while alternative perspectives require effortful perspective-taking.

The specific distortion this produces in mind-reading is that when a person fills in another’s assumed thoughts, they fill them with their own framework. The entrepreneur who is anxious about their product’s market fit assumes that investors, customers, and partners are also focused on its weaknesses — because that is what is maximally salient in their own cognitive experience. The person who finds their own pitch unconvincing assumes the audience does too. The false consensus effect provides the content that the spotlight effect and illusion of transparency provide the stage for: the assumed thoughts that others are believed to be having are systematically the thinker’s own thoughts, projected outward and treated as evidence of what others actually perceive.

The negotiation cost of assuming your internal state is already decoded

Research on egocentric bias in negotiation documented that negotiators consistently overestimate how transparent their bottom line, emotional state, and strategic intent are to the opposing party. This produces a specific failure mode: negotiators concede earlier than necessary because they assume the counterpart already knows how desperate or flexible they are, when the counterpart’s access to that information is far more limited than assumed. The illusion of transparency in negotiation converts internal pressure into premature concessions — the negotiator acts as though their position has already been decoded when it has not.

The correction: knowing about the illusion reduces its impact

Savitsky and Gilovich tested whether informing participants about the illusion of transparency before a speech reduced performance anxiety and improved speech quality. Participants who were told that research shows speakers consistently overestimate how nervous they appear to audiences reported less anxiety and were rated as performing significantly better than uninformed controls. Simply knowing about the illusion reduced its impact. The mechanism is cognitive reappraisal — the information allowed participants to discount the mind-reading assumption with evidence that directly contradicted it, which reduced the anxiety the assumption was generating. The performance improvement was not motivational. It was a direct consequence of removing a false belief from the decision-making process.

The same correction applies across any social interaction premised on the assumption that the other person can read one’s internal state — investor pitches, team presentations, negotiation sessions, difficult feedback conversations — because they reliably cannot, to the degree that anxiety about their ability to do so assumes.

Book worth reading on this

The Invisible Gorilla by Christopher Chabris and Daniel Simons is the most accessible treatment of the limits of human attention, and it provides the attentional mechanism that underlies why the spotlight effect is a reliable overestimation. The gorilla experiment — in which subjects asked to count basketball passes fail to notice a person in a gorilla suit walking through the scene — demonstrates that even highly salient stimuli go unnoticed when attention is directed elsewhere. This is precisely the mechanism the spotlight effect depends on: others are not attending to what you believe they are attending to because their attention is already fully occupied elsewhere. Chabris and Simons document this across perception, memory, and social judgment with the kind of experimental precision that makes the finding feel genuinely surprising even when you have already been told the result. For any entrepreneur who carries anxiety about how they are being perceived in social and professional interactions, this book reframes that anxiety by showing how little of what feels enormous to the person experiencing it actually registers to anyone else.

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: Gilovich, T., Medvec, V.H. & Savitsky, K. (2000), The Spotlight Effect in Social Judgment, Journal of Personality and Social Psychology, 78(2), 211–222. Gilovich, T., Savitsky, K. & Medvec, V.H. (1998), The Illusion of Transparency, Journal of Personality and Social Psychology, 75(2), 332–346. Ross, L., Greene, D. & House, P. (1977), The “False Consensus Effect”, Journal of Experimental Social Psychology, 13(3), 279–301. Savitsky, K. & Gilovich, T. (2003), The Illusion of Transparency and the Alleviation of Speech Anxiety, Journal of Experimental Social Psychology, 39(6), 618–625. Crosby, J.R., King, M. & Savitsky, K. (2014), The Minority Spotlight Effect, Social Psychological and Personality Science, 5(7), 743–750. Gilovich, T. & Savitsky, K. (1999), The Spotlight Effect and the Illusion of Transparency, Current Directions in Psychological Science, 8(6), 165–168. Bazerman, M.H. & Neale, M.A. (1992), Negotiating Rationally, Free Press. Chabris, C. & Simons, D. (2010), The Invisible Gorilla, Crown. McRaney, D. (2022), How Minds Change, Portfolio. Kahneman, D. (2011), Thinking, Fast and Slow, Farrar, Straus and Giroux.