Loss of external validity can occur when:
a. clairvoyance is observed
b. participant observed is implemented
c. behavior is observed indirectly
d. people react to being observed
D
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In autistic children, head banging, spinning in circles, and rocking are behaviors that are __________.
A. exceedingly rare B. common forms of self-stimulation C. believed to be ways of communicating without language D. used because these children find repetitive routines very aversive
How do studies using the experimental research strategy differ from other types of research?
a. Only experiments can demonstrate a cause-and-effect relationship between variables. b. Only experiments involve comparing two or more groups of scores c. Only experiments can describe the relationship between variables. d. Only experiments can demonstrate a bi-directional relationship between variables.
Which problem cannot be controlled through biofeedback?
a. muscle tension c. anxiety b. blood pressure d. none of these
The !Kung bushmen have a "rite of the first kill" that is performed twice for each boy—once after he kills his first large male animal and once after ____
a. he kills his first large female animal c. he turns 12 b. he gets engaged d. he gets circumcised