Oddly Wired
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self perception

You believe you are better than you actually are.

A 1981 study found that 93% of the US student sample surveyed rated their driving skills as above the median.

The study surveyed 161 students, not the broader population of drivers, and specifically examined driving safety and skill, not every possible human ability.

Your internal benchmark is lower than reality.

Where this comes from

Study
Ola Svenson (1981), Acta Psychologica
What the check found
The original study surveyed 161 students, not the general public of drivers. Generalizing this specific driving study to all human capabilities is scientifically unsupported.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.