The following is/are true for the gain score approach to analysis of a pretest-posttest design:
A) The mixed design is converted to a factorial design with three independent variables
B) The dependent variable is the difference in scores between pretest to posttest
C) A two-factor design becomes a single-factor design with four levels
D) b and c

Question

Quizplus · Accepted Answer

The gain score approach involves calculating the difference between pretest and posttest scores, making this difference the dependent variable.

The Following Is/are True for the Gain Score Approach to Analysis