Posner, Snyder, and Davidson (1980) examined spatial attention using arrows as a prime. Most of the time the arrow pointed to the area where the stimulus would appear, but 20% of the time it did not. They compared reaction times (RTs) when the cue was valid, when it was invalid, and when a neutral cue was presented. Which of the following statements was NOT supported by their findings?

Question

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Posner, Snyder, and Davidson (1980) found that spatial attention is limited in capacity and that RTs were slower in the invalid condition than in the valid condition. They also found that RTs were faster for responses to valid cues relative to neutral cues. However, they did not find evidence that we can attend to two different locations without a reduction in performance.

Posner, Snyder, and Davidson (1980) Examined Spatial Attention Using Arrows