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ERIC Number: EJ935106
Record Type: Journal
Publication Date: 2011-Aug
Pages: 11
Abstractor: As Provided
Reference Count: 0
ISSN: ISSN-0023-9690
Generalization Gradients in Human Predictive Learning: Effects of Discrimination Training and within-Subjects Testing
Vervliet, Bram; Iberico, Carlos; Vervoort, Ellen; Baeyens, Frank
Learning and Motivation, v42 n3 p210-220 Aug 2011
Generalization gradients have been investigated widely in animal conditioning experiments, but much less so in human predictive learning tasks. Here, we apply the experimental design of a recent study on conditioned fear generalization in humans (Lissek et al., 2008) to a predictive learning task, and examine the effects of a number of relevant procedural parameters drawn from the generalization literature in animal conditioning. Experiment 1 shows that prior discrimination learning and steady-state testing procedures sharpen the gradient; Experiment 2 shows that within-subjects testing of the range of generalization stimuli also sharpens the gradient. In addition, Experiment 2 shows that, in case of very flat initial generalization, an orderly gradient can reveal itself through differential rates of extinction learning. Finally, Experiment 2 also evidenced an orderly gradient of generalization-of-extinction. These results suggest that discrimination processes have an important effect on the generalization of predictive learning in humans, and highlight behavioral analogies between animal conditioning and human predictive learning. (Contains 5 figures.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A