Describe the changes in sleep noted in depressed persons
What will be an ideal response?
Answer: Depression results in shallow sleep, reduced levels of stages 3 and 4 slow-wave sleep, frequent awakenings, and alterations of REM sleep.
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An important difficulty with the distinctive features model of perception is
a. the need for an almost limitless number of special circuits for feature detection. b. that the effects of context receive too much weight. c. the lack of an acceptable operational definition of "distinctive feature." d. that the perception of complex patterns may occur faster than the perception of simpler patterns. e. the inability to empirically manipulate the necessary variables to form conclusive evidence.
Which of the following types of nonsocial activity are cause for concern?
A) putting together a puzzle and building with blocks B) drawing a picture and reading a book C) playing on the computer and talking to an imaginary companion D) aimless wandering and hovering near peers