Which of the following statements is true of the signal-detection theory?
A) The signal received from an unidentified source cannot be perceived without having prior knowledge about the source.
B) A stimulus appears to be in constant flux due to the inability of human senses to perceive the full spectrum of any sensory input.
C) The relationship between a physical stimulus and a sensory response is fully mechanical.
D) The intensity of a signal is one factor that determines whether people will perceive sensory stimuli or a difference between signals.
D
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For every girl diagnosed with attention-deficit hyperactivity disorder (ADHD), there are approximately ____ boys given the same diagnosis
a. two b. four c. five d. seven
A researcher correlates scores on a test (Test 1) with scores on other tests (Test 2 and Test 3). The analysis demonstrates that the scores on Test 1 correlate highly with scores on Test 2 but do not correlate with scores on Test 3 . This type of analysis is used to determine:
a. content validity b. construct validity c. concurrent validity d. predictive validity
Temporary increases in cortisol can enhance immune function.
Answer the following statement true (T) or false (F)
Where do children develop theory of mind?
a. Only in the United States b. Only in industrialized cultures c. Only in third world countries where it is critical for survival d. Everywhere