Describe the within-subjects experimental design. State two things a researcher must do for this design to qualify as an experiment.
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A within-subjects experimental design is an experimental research design in which the levels of a within-subjects factor are manipulated, then the same participants are observed in each group or at each level of the factor. To qualify as an experiment, the researcher must (1) manipulate the levels of the factor and include a comparison/control group, and (2) make added efforts to control for order and time-related factors.
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In Freud's theory, blockage of normal psychosexual development at some stage is called
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A hypothesis about why humans sleep suggests that the onset of REM sleep stops the release of neurotransmitters called ________, and so permits receptor cells to get some necessary rest and to increase their sensitivity during periods of wakefulness.
A. neuropeptides B. monoamines C. amino acids D. trace amines
Why is mandatory reporting so important?
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language involves _____ and ______
Fill in the blank(s) with the appropriate word(s).