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Short article

Similarity and binding in memory: Bound to be detrimental

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Pages 26-32 | Received 15 Dec 2007, Accepted 01 Apr 2008, Published online: 05 Jan 2009
 

Abstract

The process of binding information from different modalities and sources into an object is ubiquitous in cognition and has been a problem for research and modelling efforts in psychology. This process has been considered by most researchers as necessarily always beneficial to memory. In the present study we provide evidence that binding can be detrimental through the propagation of vulnerabilities to interference. Phonologically similar and dissimilar letters were presented sequentially at different locations on a computer monitor. Participants had to recall either the letters in their order of presentation or the spatial locations at which the letters had appeared. Whether binding was encouraged or not—providing prior knowledge of which dimension to remember—phonological similarity had a detrimental effect on recall of locations. Such a finding poses a challenge to the view that binding is the panacea in enhancing memory capacity.

Acknowledgments

We would like to thank Fabrice Parmentier for critical reading of an earlier draft. Thanks are also due to Sonya Bernard and Sarah Tardif for running the experiment. This work was supported in the form of a project grant to Sébastien Tremblay (CG073877) from the Natural Sciences and Engineering Research Council of Canada.

Notes

1 The effect of phonological similarity obtained in the present study is relatively small. Besides the mere sampling effect, the spatial distribution of the TBR items might have enhanced their distinctiveness and might have contributed to lessen the impact of phonological similarity.

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