Author Question: Dr. French makes sure that she has multiple video cameras recording her observation room during data ... (Read 43 times)

jeatrice · **on:** Jul 13, 2018

Dr. French makes sure that she has multiple video cameras recording her observation room during data collection. She also has multiple research assistants review the video recordings after the data are collected. This is to control for

a. attribute errors
b. participant effects
c. experimenter expectancy
d. recording errors

Question 2

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