In an experiment, control over extraneous variables, such as the time of day or the temperature of the room, can be obtained by
a. using a double-blind experiment.
b. making all conditions except the independent variable exactly the same for all subjects.
c. using repeated measures.
d. observing and recording the impact of each variable on each subject in the experiment..
B
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Working longer hours in adolescence is associated with all but which of the following?
a. poorer grades b. higher rates of drug and alcohol use c. spending less time in family activities d. increased likelihood of attending college.
According to the three stage model of memory, ____
a. ?forgetting only occurs at the long-term memory stage b. ?information is held for up to 30 seconds in sensory memory c. ?short-term memory holds a vast amount of information for up to several hours d. ?we keep all permanent memories in our long-term memory
"The situation I find myself in is very threatening. In other situations, I do okay, but this particular situation I don't think I can handle.". Based upon this statement, this person is most likely experiencing:
a. burnout c. stress b. the fight-flight response d. a phobia
The most common form of biomedical therapy today is ____
a. ?psychosurgery b. ?ECT c. ?medication d. ?chiropractic ANSWER: c