title: Titration and double responding as techniques promoting proficient learning in retardates.
mesh_terms: D000293:Adolescent; D000328:Adult; D000818:Animals; D001244:Association; D001288:Attention; D003118:Color Perception; D003463:Cues; D004193:Discrimination Learning; D004495:Education of Persons with Intellectual Disabilities; D000882:Haplorhini; D006801:Humans; D012201:Reward; D013028:Space Perception; D013647:Task Performance and Analysis; D013997:Time Factors; D014110:Touch