Abstract
The present experiment employed a visual signal-detection task within a cost-benefit (inhibition-facilitation) paradigm to examine the effects of selective attention on perceptual sensitivity. A central cue directed the subjects’ attention to either a right or a left spatial location where a detection task was performed. The cue was either a high/low or neutral-validity indicator of the position in which an event was likely to occur. A rating-scale response scheme in conjunction with the subjects’ target signal locational judgments allowed for the construction of ROC curves for each condition. Significant benefits were found for all subjects, supporting the hypothesis that selective attention can enhance perceptual sensitivity. Deallocation of attention resulted in an inhibition of sensitivity in unattended spatial locations. Subjects were consistently most sensitive in the right spatial location. There were no significant differences in overall response bias among the three conditions or in spatial locations. The results support theories of attention, such as “perceptual tuning, ” that suggest very early selective control.
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The present study was submitted by the first author to the psychology department at Acadia University in partial fulfillment of the requirements for the Master of Science degree. The study was supported by Natural Science and Engineering Research Council of Canada Grant A-0665 awarded to the second author.
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Bashinski, H.S., Bacharach, V.R. Enhancement of perceptual sensitivity as the result of selectively attending to spatial locations. Perception & Psychophysics 28, 241–248 (1980). https://doi.org/10.3758/BF03204380
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DOI: https://doi.org/10.3758/BF03204380