title: The formation of a generalized categorization repertoire: effect of training with multiple domains, samples, and comparisons.
abstract: The present experiment explored the effects of three variables on the spontaneous categorization of stimuli in perceptually distinct and novel domains. Each of six stimulus domains was created by morphing two images that were the domain endpoints. The endpoints of the domains were male and female faces, two abstract drawings, a car and a truck, two banded-elevation satellite land images, a tree and a cat, and two false-color satellite images. The stimulus variants at each end of a domain defined two potential perceptual classes. Training was conducted in a matching-to-sample format and used stimuli from one or two domains, one or three variants per class as samples, and one or three variants per class as comparisons. The spontaneous categorization of stimuli in the untrained stimulus domains showed the emergence of a generalized categorization repertoire. The proportion of spontaneously categorized stimuli in the new domains was positively related to the number of domains and samples used in training, and was inversely related to the number of comparisons used in training. Differential reaction times demonstrated the discriminability of the stimuli in the emergent classes. This study is among the first to provide an empirical basis for a behavior-analytic model of the development of generalized categorization repertoires in natural settings.
authors.affiliation: Department of Psychology, Queens College, and the Graduate Center of CUNY, Flushing, New York 11367, USA.
authors.forename: Lanny
authors.initials: L
authors.lastname: Fields
authors.forename: Kenneth F
authors.initials: KF
authors.lastname: Reeve
authors.forename: Priya
authors.initials: P
authors.lastname: Matneja
authors.forename: Antonios
authors.initials: A
authors.lastname: Varelas
authors.forename: James
authors.initials: J
authors.lastname: Belanich
authors.forename: Adrienne
authors.initials: A
authors.lastname: Fitzer
authors.forename: Kim
authors.initials: K
authors.lastname: Shamoun
mesh_terms: D000293:Adolescent; D000328:Adult; D001245:Association Learning; D003118:Color Perception; D003210:Concept Formation; D004193:Discrimination Learning; D005260:Female; D005793:Generalization, Psychological; D006801:Humans; D008297:Male; D011939:Mental Recall; D010364:Pattern Recognition, Visual; D010469:Perceptual Distortion; D010470:Perceptual Masking; D011214:Practice, Psychological; D011930:Reaction Time