Abstract
There is debate over the mechanisms that govern the orienting of attention. Some argue that the enhanced performance observed at a cued location is the result of increased perceptual sensitivity or preferential access to decision-making processes. It has also been suggested that these effects may be the result of trades in speed for accuracy on the part of the observers. In the present study, observers performed either an exogenous or an endogenous orienting of attention task under both normal instructions (respond as quickly and as accurately as possible) and speeded instructions that used a deadline procedure to limit the amount of time observers had to complete a choice reaction time (CRT) task. An examination of the speed-accuracy operating characteristics (SAOCs) yielded evidence against the notion that CRT precuing effects are due primarily to a tradeoff of accuracy for speed.
Highlights
The processes that govern visual attention have been studied extensively
The reaction time (RT) data presented in Appendix A were subjected to a repeated measures analysis of variance (ANOVA) that included the factors of cue type and cutoff (14 deadlines)
The RT and error data were each subjected to a repeated measures ANOVA that included the factors of cue type and interval (14 intervals)
Summary
The processes that govern visual attention have been studied extensively. A major area of interest has been the mechanisms involved in the orienting of attention. Posner[1] defined “orienting” as the “aligning of attention with a source of sensory input or an internal semantic structure stored in memory” Several studies have confirmed that we can orient attention toward a stimulus without an accompanying eye movement (e.g., [2]). It is well established that performance on a variety of detection and discrimination tasks improves when advanced information concerning the probable location of the imperative stimulus is given to an observer.
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