Question

Consider the diagram shown below.

Assume that 50 people were assigned to each group. Which of the following would result in the best improvement to this design?
A) Increase sample size to 200 per group
B) Use random assignment to place individuals in each group
C) Decrease the time lag between pretest and post-test
D) Restrict the group composition to include individuals of only one gender

Answer

This answer is hidden. It contains 1 characters.