title: Two empirical tests of informal predictions from Helson's adaptation-level theory.
mesh_terms: D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001288:Attention; D001307:Auditory Perception; D004056:Differential Threshold; D004192:Discrimination, Psychological; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008960:Models, Psychological; D011601:Psychophysics; D011930:Reaction Time; D013997:Time Factors