Check all reasons why the simple pre-post test evaluation design is the weakest evaluation design. Multiple answers possible.
Question 21 options:
When compared to a randomized control trial, attrition is more common or likely to happen for a simple pre-post test design.
It is subject to time-related threats to internal validity.
It does not use a control/comparison group.
It has the highest threat to internal validity, when compared to all evaluation designs, and in particular, the randomized control trial.