The effect of informational masking and word position on recall
AbstractA study was conducted to examine age-related differences in the time course of perceptual streaming in an informational masking paradigm. Results from the study show that for both younger and older adults, performance improves systematically with word position when the background consists of a speech masker, but not when it consists of a noise masker, indicating that stream segregation takes time to build up in informational masking situations. It further showed that older adults experienced less benefit from the noise-vocoded masker than did younger adults, possibly due to a decline in the ability to benefit from temporal fluctuations in a masker. The study concluded that the pattern of performance as a function of Word Position was again equivalent for both groups, indicating that the time course of stream segregation is not affected by aging.
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