Author Question: Which of the following is least likely to be a threat to validity in a single-group before-after ... (Read 106 times)

jilianpiloj · **on:** Jun 19, 2018

Which of the following is least likely to be a threat to validity in a single-group before-after design?

a. Attrition
b. Maturation
c. Retesting
d. Selection

Question 2

Which of the following is an example of a single-group research design?

a. A group of depressed patients is compared to a group of non-depressed patients.
b. A group of depressed patients is assessed before they enter a mental health facility and after they leave the facility.
c. The head of a mental health facility that specializes in depression is interviewed.
d. A group of patients who are spending time in a mental health facility are interviewed.