Which of the following is NOT one of the requirements of the regression discontinuity design
a. group assignment must be based on a cutoff score
b. the cutoff score should be located at one of the extreme ends of the distribution
c. the experimenter must control the assignment of participants to groups
d. all participants must be from the same population
B
Political Science
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All of the following are factors contributing to the rise in physician costs EXCEPT ______.
A. decrease in cost of equipment and supplies B. general pressures of inflation in the economy as a whole C. rising cost of medical malpractice insurance D. the need to practice “defensive medicine”
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