People vary a lot in how well they recognize, match or categorize the things they see – researchers attribute this skill to an ability they call 'o'
- Written by Isabel Gauthier, David K. Wilson Professor of Psychology, Vanderbilt University

Like snowflakes, no two people are exactly the same. You’re probably used to the idea that people differ substantially in personality and in cognitive abilities – skills like problem-solving or remembering information.
In contrast,...