title: Studies in activity level. V. The relationships among eyelid conditioning, intelligence, activity level, and age.
mesh_terms: D003214:Conditioning, Classical; D003215:Conditioning, Eyelid; D006801:Humans; D008607:Intellectual Disability / Q000523:psychology*; D007360:Intelligence; D007361:Intelligence Tests; D012018:Reflex
keywords: INTELLIGENCE TESTS; MENTAL DEFICIENCY/psychology; REFLEX, CONDITIONED