Discussion
Signal detection theory identifies two distinct processes in sensory detection :
(a) sensory process
(b) decision process
(c) motivational process
(d) response bias
Codes :
Answer: A
The two processes are (a) and (b): the sensory process and the decision process.
Signal detection theory separates detection into a sensory process, the person's sensitivity to the signal (measured by d'), and a separate decision process, the criterion the person adopts in deciding whether to say a signal was present (measured by beta or c).
Response bias is the outcome of the decision process rather than a second, separate process, and motivation affects the decision criterion but is not one of the two processes the theory names. So the options with (c) or (d) are wrong.
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