Word Superiority Effect
The phenomenon that people have better recognition of letters presented within words as compared to isolated letters and to letters presented within nonword (orthographically illegal, unpronounceable letter array) strings.
EverydayConcepts.io
Origin
The effect was first described by Cattell (1886), who presented letters and words for 5–10ms, finding better word recognition. G. Reicher (1969) and D. Wheeler (1970) developed the Reicher-Wheeler paradigm, the modern experimental framework using masked stimuli and two-alternative forced choice. The finding drove development of McClelland and Rumelhart's Interactive Activation Model (IAM, 1981), foundational to visual word processing theory.
Updated February 22, 2026