Iconic-memory processing of unfamiliar stimuli by retarded and nonretarded individuals

Am J Ment Defic. 1979 Jul;84(1):40-8.

Abstract

The iconic-memory processing of unfamiliar stimuli was undertaken employing a visually cued partial-report procedure and a visual masking procedure. Subjects viewed stimulus arrays consisting of six Chinese characters arranged in a circular pattern for 100 msec. At variable stimulus-onset asynchronies, a teardrop indicator or an annulus was presented for 100 msec. Immediately upon cue offset, the subject was required to recognize the cued stimulus from a card containing a single character. Retarded subjects' performance was comparable to that of MA- and CA-matched subjects. We suggested that earlier reported iconic-memory differences between retarded and nonretarded individuals may be attributable to processes other than iconic memory.

MeSH terms

  • Adult
  • Form Perception*
  • Humans
  • Intellectual Disability / psychology*
  • Memory*
  • Pattern Recognition, Visual*
  • Perceptual Masking