Author Question: Some threats to internal validity are related to time and other threats are related to differences ... (Read 53 times)

APUS57 · **on:** Jun 19, 2018

Some threats to internal validity are related to time and other threats are related to differences between groups. What is a threat related to time?

a. history effects
b. assignment bias
c. selection bias
d. differential attrition

Question 2

Fritz is conducting a survey that addresses several complex social justice issues and he knows that some respondents will likely need clarifications. His best choice for methodology is a(n) ____.

a. group questionnaire
b. phone interview
c. mail questionnaire
d. e-mail questionnaire