______ means that the scores cannot be related in some systematic way to each other.
A. Independent variables
B. Independent variances
C. Independent observations
D. Independent case studies
Answer: C
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Which of the following statements is incorrect?
A. The father's sperm contains 23 chromosomes. B. A zygote results when an egg is fertilized. C. DNA is made up of large strands of chromosomes. D. The zygote is the largest human cell.
Biofeedback trains people to:
A. lower the level of epinephrine in their blood stream B. use emotion-focused coping C. exert more control over their autonomic nervous system D. make effective use of defense mechanisms
Which one of the following questions does not concern a threat to external validity? Would the same experiment _______
a. conducted at another time produce the same results? b. conducted in another place produce the same results? c. produce the same results if other subjects were used? d. produce the same results if the independent variable were operationalized differently?
When using fMRI to find increased activity in relation to a behavioral task, researchers should ______.
A. target only specific brain areas B. scan the entire brain to avoid missing interesting areas of activation C. let the participants rest for 5 minutes after injecting the radioactive isotope D. avoid repeating conditions, as that would require repeated radioactive exposures