The best definition of a variable is that it is the part of an experiment that
a. is controlled.
b. can change.
c. always stays the same.
d. is always a behavior in psychology.
B
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Which conclusion is most accurate regarding the research on violence in the mass media and aggression?
a. It has shown that violent media can cause aggression. b. It has shown that there is a relationship between violent media and aggression, but it has not shown causality. c. It has shown that there is a relationship between violent media and aggression for men but not for women. d. Conclusions are mixed; it has NOT shown a clear relationship between violent media and aggression.
A neuron reaches its trigger point when
a. it receives more than 10 "exciting" messages. b. the number of "inhibiting" messages is half or less than the number of "exciting" messages. c. "exciting" messages arrive close in time and are not canceled by "inhibiting" messages. d. "inhibiting" messages arrive close in time and are not canceled by "exciting" messages.
In a between subjects factorial ANOVA, the mean square within is found by dividing the sum of squares by the
a. degrees of freedom within c. degrees of freedom for the interaction b. degrees of freedom total d. degrees of freedom for Factor B
A good treatment for a traumatic brain injury would be __________.
A. a glutamate antagonist B. a glutamate agonist C. an adenosine antagonist D. a GABA agonist