Signal detection theory improves on simple thresholds by including the influence of:
a. psychological factors, such as expectations.
b. engineering factors, such as how well a set of speakers is designed.
c. whether an individual has hearing or visual impairments.
d. the actual intensity of the stimulus.
Answer: A
Rationale: A weak stimulus could have a psychological effect even though it resides below the level of conscious awareness.
Psychology
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