Author Question: Len et al. (2005) tested the effect of counselor training in two different ethnic group in ... (Read 90 times)

Themember4 · **on:** Jun 20, 2018

Len et al. (2005) tested the effect of counselor training in two different ethnic group in Guatemala. The researchers measured quality of care before and after the training for Mayan populations compared to Latino populations.

Question 2

When people begin participation in a study, but they drop out, differences between groups might be due to the nature of people in one group who dropped out. The threat to internal validity in this case would be

a. selection.
b. maturation.
c. statistical regression.
d. attrition.