To say that an experiment contains a confound means that
a. different subjects are assigned to each group
b. the dependent variable is measured.
c. the independent variable is manipulated.
d. there is an uncontrolled extraneous variable in the experiment.
d
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Sympathetic ganglia ____.
A. are located inside the spinal cord B. act more independently than do parasympathetic ganglia C. are closely linked and often act as a single system D. have short postganglionic fibers extending to internal organs
During the formal-operational period an adolescent is generally able to:
A) engage in hypothetical thinking B) coordinate systems of thought into higher systems C) think abstractly D) all of the above E) none of the above
Which of the following women is most likely to have dizygotic twins?
A) Pallavi, who is Korean B) Oluchi, who is Nigerian C) Wei, who is Chinese D) Ember, who is American
Which of the following is a large structure visible on the dorsal surface of the human brain stem?
A) pituitary B) cerebellum C) optic chiasm D) hypothalamus E) mammillary body