Auditory Threshold for Evoking an Orienting Reflex in Mongoloid Patients

Abstract
Auditory intensity thresholds for evoking an orienting reflex to a 1000-Hertz tone were obtained from 15 Mongoloid retardates and 15 normal Ss. Mongoloids differed from normals both in the character of their OR and in requiring 32 db greater intensity for evocation.

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