Effect of verbal and nonverbal short-term memory coding with normal and retarded children.
20 retarded children (CA 11.7 yr.), matched with 20 normal ones, were assigned to verbal or nonverbal stimulus conditions. Pairs of 8-point random shapes were shown as styrofoam objects or drawings. d' measures for adjacent positions showed better recall for verbal coding and three-dimensional stimuli. Serial position effects were noted. Coding and dimensionality interacted.
D004192:Discrimination, Psychological; D004495:Education of Persons with Intellectual Disabilities; D005556:Form Perception; D006801:Humans; D008570:Memory, Short-Term; D013028:Space Perception; D014705:Verbal Behavior; D014796:Visual Perception