Which of the following is a possible disadvantage of before after research designs?
A) High statistical power
B) Statistical conclusion invalidity
C) Retesting effects
D) High random error

Question

Quizplus · Accepted Answer

Before-after research designs can suffer from retesting effects, where participants' performance may improve simply because they have taken the test before, rather than due to any treatment effect.

Which of the Following Is a Possible Disadvantage of Before