According to signal detection theory, the threshold for detecting a signal depends on
a. the properties of the stimulus, like its intensity.
b. the amount and type of background noise.
c. both the properties of the stimulus and the amount and type of background noise. d. the biological and psychological characteristics of the perceiver.
e. the properties of the stimulus, background noise, and biological and psychological characteristics of the perceiver.
e
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Harrison et al. are conducting a study assessing the ability of depressed versus non-depressed participants to remember negative emotions in a short story about a family whose car breaks down. They plan to ask participants to read the story and then make a list of the emotions expressed in the story. Before beginning the study, they make a list of negative emotions (e.g., sadness and anger) that they will record from the participants' responses. In this example, negative emotions are the ________.
A. dependent variable B. independent variable C. operational definition D. significant variable
A record of brain-wave activity is called a (an) _____
a) PET scan. b) CAT scan. c) EMG. d) EEG.