Second-order backward blocking and unovershadowing in human causal learning.
De Houwer, J. and Beckers, T. (2002) Second-order backward blocking and unovershadowing in human causal learning. Experimental Psychology, 49, (1), 27-33.
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Description/Abstract
De Houwer and Beckers (in press, Experiment 1) recently demonstrated that ratings about the relation between a target cue T2 and an outcome are higher when training involves CT1+ and T1T2+ followed by C+ trials than when training involves CT1+ and T1T2+ followed by C- trials. We replicated this study but now explicitly asked participants to rate the causal status of the cues both before and after the C+ or C- trials. Results showed that causal ratings for T2 were significantly higher after C+ trials than before C+ trials and that T2 received significantly lower ratings after C- trials than before C- trials. The results thus provide the first evidence for higher-order unovershadowing and higher-order backward blocking. In addition, the ratings for T1 revealed that first-order backward blocking (i.e., decrease in ratings for T1 as the result of C+ trials) was stronger than first-order unovershadowing (i.e., increase in ratings for T1 as the result of C- trials).
| Item Type: | Article |
|---|---|
| ISSNs: | 0033-555X (print) |
| Related URLs: | |
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology |
| Divisions: | University Structure - Pre August 2011 > School of Psychology |
| Item ID: | 55493 |
| Date Deposited: | 01 Aug 2008 |
| Last Modified: | 01 Jun 2011 07:11 |
| Contributors: | De Houwer, J. (Author) Beckers, T. (Author) |
| Date: | 2002 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/55493 |
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