In a group of five, A is linked to B, B to C, B to D, B to E, C to E, and D to E. The density of this group is
a. .3
b. .5
c. .6
d. .8
e. 1.2
c. .6
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A researcher wants to see if a protein-enriched diet will enhance the maze-running performance of rats. One group of rats is fed the high-protein diet for the duration of the study; the other group continues to receive ordinary rat chow. In this experiment, the rats' maze-running performance is the
a. correlated variable. b. control variable. c. dependent variable. d. independent variable.
Use of a cross-sectional design would be appropriate in trying to find an answer to all of the following questions EXCEPT
a. "How does panic disorder differ in children and adults?" b. "Are the cognitive triggers for panic disorder different in children and adults?" c. "What early behaviors did adult panic disorder patients tend to display when they were young?" d. "Does exposure therapy tend to be more or less effective when it is used in the treatment of children versus adults?"
According to David Barash, what is a biogrammar?
a. An innate neurological structure that allows the brain to regenerate after an injury b. An inherited structure that predisposes organisms toward certain kinds of social activities c. A set of social rules for hot to behave and think that people consider natural rather than cultural d. A system of cell assemblies that makes human language and mathematical skills unique in the animal kingdom
In the environmental guidance of behavior, punishment is effective because the punisher
a. evokes behaviors that interfere with the original operant response. b. is discriminated from the reinforcer. c. affects only the autonomic nervous system. d. extinguishes the original operant response. e. is a blend of the original reinforcer and the discriminative stimulus.