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Signal Detection Theory

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Multiple Choice

What is the main assumption of signal detection theory?

  1. Observers are able to perfectly discriminate between signal and noise.
  2. Observers are able to make optimal decisions about the presence or absence of a signal.
  3. Observers are unable to make any decisions about the presence or absence of a signal.
  4. Observers are able to make decisions about the presence or absence of a signal, but they are not always optimal.
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