Abstract
The purpose of the present study was to replicate and extend to word recognition previous findings of reduced magnitude and reliability of laterality effects when exogenous cueing was used in a dichotic listening task with syllable pairs. Twenty right-handed undergraduate students with normal hearing (10 females, 10 males) completed a dichotic listening task in which the words bower, dower, power, and tower were presented in a sad, angry, happy, or neutral tone. Each stimulus pair (one to each ear) was preceded by a lateralized tone cue. Participants were required to identify the word presented to the ear where the cue was heard. When correct responses were analyzed, results replicated the pattern of reduced magnitude and reliability of laterality effects observed in previous studies. However, the percentage of intrusions (identification of the stimulus presented to the uncued ear) increased with the time between the onset of the cue and the target, suggesting that the cue was not fully effective. These results are discussed in terms of their implications for the use of exogenous cueing to control attention. It seems that, in the present task, an effective means of attention control has yet to be identified.
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