A major advantage of single-subject research compared to group research is that
a. The experiment can be modified on the spot, allowing flexibility in design
b. There are no ethical problems with single-subject designs
c. There are no practical problems with single-subject designs
d. Group designs cannot detect differences well
Question 2Suppose that Dr. Jeffers uses 10 participants in an experiment and finds a correlation of .765, while Dr. Amico uses 50 participants and finds a correlation of .361 . Both results are significant. Which result should you have more trust in?
a. Dr. Jeffers, because he showed a larger effect
b. Dr. Amico, because he used more people
c. You can trust them equally
d. You can't trust either one
Question 3The square of the correlation coefficient gives
a. The percentage of the variance in the data that is accounted for by the independent variable.
b. An estimate of power
c. An estimate of reliability
d. The percentage of the variance attributed to error
Question 4The statistical power of a test
a. Depends on the size of the sample drawn from the population
b. Depends on the size of the effect
c. Depends on the reliability of the test
d. Both a and b
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