کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
918944 919860 2011 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Generalization gradients in human predictive learning: Effects of discrimination training and within-subjects testing
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب رفتاری
پیش نمایش صفحه اول مقاله
Generalization gradients in human predictive learning: Effects of discrimination training and within-subjects testing
چکیده انگلیسی

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.


► Perceptual generalization has hardly been studied in human predictive learning.
► Animal conditioning studies show that discrimination processes influence perceptual generalization.
► We show that discrimination training and within-subjects testing influence the shape of the gradient in predictive learning.
► We establish the generalization gradient of extinction learning in predictive learning.
► These results highlight the behavioral analogies between animal conditioning and human predictive learning.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Learning and Motivation - Volume 42, Issue 3, August 2011, Pages 210–220
نویسندگان
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