Placebo control groups and double-blind experiments are typically used to control for
A. individual differences variables and matching variables.
B. demand characteristics and experimenter effects.
C. selective subject loss and mechanical subject loss.
D. manipulated variables and extraneous variables.
Answer: B. demand characteristics and experimenter effects.
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The discontinuity effect refers to ____
a. the fact that, even when faced with strong evidence counter to their stereotypes, people tend to hold onto their stereotypes and simply allow that there are "exceptions" b. the fact that people's explicit attitudes do not always match their implicit attitudes c. the tendency for people to exclude themselves from a category when stereotyping that category d. the fact that groups tend to be more influenced by competition than individuals are
All of these hormones are produced by the pituitary gland EXCEPT
a. melatonin. c. prolactin. b. oxytocin. d. vasopressin.
____________________ has the highest fertility rate, according to 2009 data
a. Angola c. Afghanistan b. Brazil d. United States
Both Pavlov's and Thorndike's research involved responses that were
a. easy for their animals to perform. b. evoked automatically by environmental stimuli. c. readily identifiable with brain processes. d. complex rather than simple. e. achieved after extensive training.