Abstract
Interstimulus interval (ISI) was varied from 250 to 2,500 msec in an auditory matching-to-sample task in which a sample sound was followed by three choice sounds, one of which was the same intensity as the sample. Signal detection analysis of the results for eight Ss revealed that the pattern of discriminability (d ) among the three choice sounds was not significantly altered by variations of ISI. As the ISI became longer, however, false-alarm (FA) rate increased for the first choice and decreased for the last choice. It was concluded that for sequence durations assessed thus far, decreases in the d of choice sounds as a function of their remoteness from the sample sound are attributable to interference from intervening sounds rather than to passively decaying stimulus traces.
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The writer wishes to thank Harriet Emerson, Ruth Libman, and Carolyn Cote for assistance in preparation, administration, and analysis of tests. This research was supported by Grant MA-1652 from the Medical Research Council of Canada.
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Doehring, D.G. Signal detection analysis of the effects of sequence duration on auditory matching to sample. Bull. Psychon. Soc. 2, 107–108 (1973). https://doi.org/10.3758/BF03327733
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DOI: https://doi.org/10.3758/BF03327733