The emotion was strong. The judgement followed the emotion. A different emotion on a different day would have produced a different judgement.

The tendency for individuals to overestimate their positive qualities and abilities while underestimating their negative ones relative to others.

A Scene Worth Recognising

A person scrolling their contacts list sees mostly names of people they still hear from — close friends, reliable colleagues, a few family members. It feels like most of their connections are strong. But the friendships that quietly faded, the colleagues who moved on, the acquaintances who stopped replying — none of them appear in the list. The pattern creating that feeling is Illusory superiority.

What it means and how it works

The bias operates through several interconnected processes: (1) egocentric bias leads individuals to weigh their own experiences more heavily than others’; (2) selective recall favors memories of successful performances while forgetting failures; (3) social comparison often uses vague or ambiguous standards, allowing self‑enhancing interpretations; and (4) motivational factors drive a desire to see oneself positively, especially when the trait is important to identity.

Illusory superiority, also known as the Lake Wobegon effect or better-than-average effect, describes a pervasive cognitive bias where people view themselves as more favorable than the average peer on traits such as intelligence, kindness, driving skill, and health behaviors. This bias arises from a combination of egocentric focus, selective memory of successes, and motivational desires to maintain a positive self‑image. Although the effect is robust across cultures and domains, its magnitude varies depending on the trait’s ambiguity and the relevance of the trait to self‑esteem.

Why it matters

Illusory superiority can distort decision‑making, hinder learning and self‑improvement, and create interpersonal conflict. For example, overconfident drivers may take unnecessary risks, overconfident students may neglect study, and overconfident employees may resist feedback, leading to suboptimal outcomes in health, education, and workplace settings.

The verified research on this pattern supports the following:

  • People consistently rate themselves as above average on various positive traits and abilities when compared to peers.

Common misunderstandings

Misunderstanding 1: Only narcissistic or arrogant people show the effect; in fact, it appears in the general population.

Misunderstanding 2: The bias is always harmful; modest self‑enhancement can sometimes boost motivation and well‑being.

Misunderstanding 3: If people are aware of the bias, they automatically correct it; awareness alone does not eliminate the tendency.

Sources

  • Niroula, Rishab. REV 2.0 Topic Catalog. Hello to Halo.
  • Kahneman, Daniel. Thinking, Fast and Slow. Farrar, Straus and Giroux, 2011.
  • Gilovich, Thomas. How We Know What Isn't So. Free Press, 1991.
  • Shermer, Michael. The Believing Brain. Times Books, 2011.

The next time this pattern surfaces, the move is not to fight it — it is to notice it. Naming Illusory superiority creates a moment of pause before the decision. That moment is usually enough.