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Vigo, Ronaldo; Doan, Charles A.; Zhao, Li – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2022
The quest for determining the degree of learning difficulty associated with different types of categories has been instrumental in our understanding of human categorization behavior and, more broadly, human generalization. For instance, we now know that the topological nature of the dimensions (e.g., whether these are integral or separable) that…
Descriptors: Discrimination Learning, Classification, Learning Processes, Difficulty Level
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George, David N.; Oltean, Bianca P. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2020
Learning to categorize perceptually similar stimuli can result in people becoming more sensitive to differences along perceptual dimensions that are relevant to category membership and/or less sensitive to equivalent differences along irrelevant perceptual dimensions. These effects of acquired distinctiveness and acquired equivalence may be caused…
Descriptors: Foreign Countries, College Students, Associative Learning, Learning Processes
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Lee, Jessica C.; Hayes, Brett K.; Lovibond, Peter F. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2018
Two experiments tested whether a peak-shifted generalization gradient could be explained by the averaging of distinct gradients displayed in subgroups reporting different generalization rules. Across experiments using a causal judgment task (Experiment 1) and a fear conditioning paradigm (Experiment 2), we found a close concordance between…
Descriptors: Generalization, Associative Learning, Discrimination Learning, Learning Theories
Derenne, Adam – Journal of the Experimental Analysis of Behavior, 2010
A shift in generalization gradients away from S+ and towards stimuli on the opposite end of the stimulus dimension from S- is a well established phenomenon in the laboratory, occurring with humans and nonhumans and with a wide range of stimuli. The phenomenon of gradient shifts has also been observed to have an analogous relationship to a variety…
Descriptors: Stimulus Generalization, Discrimination Learning, Shift Studies, Visual Stimuli
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Keith, Kenneth D. – Teaching of Psychology, 2002
Stimulus discrimination is a standard subject in undergraduate courses presenting basic principles of learning, and a particularly interesting aspect of discrimination is the peak shift phenomenon. Peak shift occurs in generalization tests following intradimensional discrimination training as a displacement of peak responding away from the S+ (a…
Descriptors: Undergraduate Students, Reinforcement, Learning Theories, Stimulus Generalization