Watch for
Low confidence on tasks that are objectively difficult for everyone.
Outcome & SelfBias #125
Worse-Than-Average Effect
On hard tasks we think we are below average.
The tendency to believe oneself to be below average in ability when attempting extremely difficult or unusual tasks.
Why it matters: The mirror of the better-than-average effect. Both reflect flawed self-assessment.
Try this
Compare yourself to the actual distribution of performance not an idealised average.
Real-world example
Believing you are worse than most people at unicycling because you have never tried it.
Key researchers
Justin Kruger
First described in 1999
Psychological mechanism
Egocentric comparison. People compare themselves to the average but the average is abstract. For easy tasks people assume others find it easy too inflating relative ability. For hard tasks the difficulty is salient leading to underestimation.
Seminal research
Justin Kruger (1999), "Lake Wobegon be gone: The below-average effect and the egocentric nature of comparative ability judgments."
Debrief
Biases are not character flaws. They are recurring patterns in how minds compress uncertainty, save energy, and narrate reality. Once you recognise the pattern, you can slow the decision down, test the assumption, and make space for a better explanation.
Sources
Original ResearchKruger (1999) — Worse-than-average effect
EducationalAPA Dictionary entry