Overshadowing by fixed- and variable-duration stimuli
Two experiments investigated the effect of the temporal distribution form of a stimulus on its ability to produce an overshadowing effect. The overshadowing stimuli were either of the same duration on every trial, or of a variable duration drawn from an exponential distribution with the same mean du...
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| Format: | Article |
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Taylor & Francis
2015
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| Online Access: | https://eprints.nottingham.ac.uk/46925/ |
| _version_ | 1848797429011316736 |
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| author | Bonardi, Charlotte Mondragón, Esther Brilot, Ben Jennings, Dómhnall J. |
| author_facet | Bonardi, Charlotte Mondragón, Esther Brilot, Ben Jennings, Dómhnall J. |
| author_sort | Bonardi, Charlotte |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Two experiments investigated the effect of the temporal distribution form of a stimulus on its ability to produce an overshadowing effect. The overshadowing stimuli were either of the same duration on every trial, or of a variable duration drawn from an exponential distribution with the same mean duration as that of the fixed stimulus. Both experiments provided evidence that a variable-duration stimulus was less effective than a fixed-duration cue at overshadowing conditioning to a target conditioned stimulus (CS); moreover, this effect was independent of whether the overshadowed CS was fixed or variable. The findings presented here are consistent with the idea that the strength of the association between CS and unconditioned stimulus (US) is, in part, determined by the temporal distribution form of the CS. These results are discussed in terms of time-accumulation and trial-based theories of conditioning and timing. |
| first_indexed | 2025-11-14T20:03:44Z |
| format | Article |
| id | nottingham-46925 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:03:44Z |
| publishDate | 2015 |
| publisher | Taylor & Francis |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-469252020-05-04T20:10:36Z https://eprints.nottingham.ac.uk/46925/ Overshadowing by fixed- and variable-duration stimuli Bonardi, Charlotte Mondragón, Esther Brilot, Ben Jennings, Dómhnall J. Two experiments investigated the effect of the temporal distribution form of a stimulus on its ability to produce an overshadowing effect. The overshadowing stimuli were either of the same duration on every trial, or of a variable duration drawn from an exponential distribution with the same mean duration as that of the fixed stimulus. Both experiments provided evidence that a variable-duration stimulus was less effective than a fixed-duration cue at overshadowing conditioning to a target conditioned stimulus (CS); moreover, this effect was independent of whether the overshadowed CS was fixed or variable. The findings presented here are consistent with the idea that the strength of the association between CS and unconditioned stimulus (US) is, in part, determined by the temporal distribution form of the CS. These results are discussed in terms of time-accumulation and trial-based theories of conditioning and timing. Taylor & Francis 2015 Article PeerReviewed Bonardi, Charlotte, Mondragón, Esther, Brilot, Ben and Jennings, Dómhnall J. (2015) Overshadowing by fixed- and variable-duration stimuli. Quarterly Journal of Experimental Psychology, 68 (3). pp. 523-542. ISSN 1747-0226 Rats Timing Overshadowing Associative learning Stimulus distribution form http://www.tandfonline.com/doi/abs/10.1080/17470218.2014.960875 doi:10.1080/17470218.2014.960875 doi:10.1080/17470218.2014.960875 |
| spellingShingle | Rats Timing Overshadowing Associative learning Stimulus distribution form Bonardi, Charlotte Mondragón, Esther Brilot, Ben Jennings, Dómhnall J. Overshadowing by fixed- and variable-duration stimuli |
| title | Overshadowing by fixed- and variable-duration stimuli |
| title_full | Overshadowing by fixed- and variable-duration stimuli |
| title_fullStr | Overshadowing by fixed- and variable-duration stimuli |
| title_full_unstemmed | Overshadowing by fixed- and variable-duration stimuli |
| title_short | Overshadowing by fixed- and variable-duration stimuli |
| title_sort | overshadowing by fixed- and variable-duration stimuli |
| topic | Rats Timing Overshadowing Associative learning Stimulus distribution form |
| url | https://eprints.nottingham.ac.uk/46925/ https://eprints.nottingham.ac.uk/46925/ https://eprints.nottingham.ac.uk/46925/ |