Author Question: A problem with a longitudinal design is that the results may be distorted by ____. a. cohort ... (Read 87 times)

lak · **on:** Jun 19, 2018

A problem with a longitudinal design is that the results may be distorted by ____.

a. cohort effects
b. participant attrition
c. differential history effects
d. assignment bias

Question 2

Which item is double-barreled?

a. Do you prefer the Democratic or Republican candidate?
b. How do you feel about the earlier start times and longer hours at the high school?
c. Are you male or female?
d. Please explain your preference.