Premium
GENERALIZATION GRADIENTS AND STIMULUS CONTROL IN DELAYED MATCHING‐TO‐SAMPLE 1
Author(s) -
Sidman Murray
Publication year - 1969
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1969.12-745
Subject(s) - stimulus (psychology) , significant difference , sample (material) , psychology , audiology , sample size determination , generalization , stimulus generalization , matching (statistics) , statistics , control sample , mathematics , ellipse , stimulus control , artificial intelligence , pattern recognition (psychology) , communication , computer science , cognitive psychology , geometry , biology , neuroscience , mathematical analysis , chemistry , medicine , chromatography , perception , food science , nicotine
Neurological patients were subjects in delayed visual matching‐to‐sample. The sample and choice stimuli were ellipses of varying size. By measuring the difference in size between the sample on a given trial and the ellipse the subject chose on that trial, gradients of differences between samples and choice stimuli could be plotted. These difference gradients broadened with increasing delays. Sharp gradients were controlled by the samples. Flat gradients were controlled by features of the choice display, independently of the samples. Intermediate gradients reflected combined control by the samples and by the choice displays.