SAME-DIFFERENT JUDGMENTS AND THE PSYCHOLOGICAL REFRACTORY PERIOD.
Abstract
Four sets of paired visual stimuli (OO, XX, XO, or OX) were judged by 48 Ss to be either 'same' or 'different.' Decision latencies of the same and different judgment were studied as a function of the interstimulus interval (ISI). In Experiments I and II, in which stimulus durations were 70 msec., decision latencies showed marked increases when the ISI was reduced to 100 msec., but in Experiments III and IV, in which the stimulus durations were only 40 msec., comparable increases did not occur until the ISI was reduced to 50 msec. These increases were more marked for 'same' than for 'different' judgments, although overall decision latencies were generally shorter for 'same' judgments. The effects of varying ISI's and stimulus durations are interpreted in terms of masking; the possibility of central intermittency as a cause of increased latencies in other experiments is left open. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1967
- Accession Number
- AD0648447
Entities
People
- Dalbir Bindra
- Michael C. Corballis
- William Lieberman
Organizations
- McGill University