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

question 31

Multiple Choice

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 (RT) when the cue was valid, when it was invalid, and when a neutral cue was presented. Which of the following results was NOT supported by their findings?

• A) RTs were slower in the invalid condition relative to the valid condition.
• B) Spatial attention is limited in capacity.
• C) We can attend to two different locations without a reduction in performance.
• D) RTs were faster for valid responding relative to neutral responding.

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Definitions:

Machine-Hours

A measure of production output or operation, indicating the total hours machines are running in the manufacturing process.

Markup

The surcharge applied to the original cost of items to compensate for overhead expenses and secure earnings.

Plantwide Predetermined Rate

A single overhead rate calculated using the total estimated overhead costs divided by an estimated allocation base for an entire factory or plant.

Machine-Hours

A measure of the time that a machine is in operation, used in costing and operational analysis.