If a study has a difference in the differences, you know the study definitely has a:
A)crossover interaction.
B)significant main effect.
C)spreading interaction.
D)significant interaction.

Question

Quizplus · Accepted Answer

"Difference in differences" implies an interaction effect between two or more independent variables. Thus, the study definitely has a significant interaction. The other choices are not necessarily true based on this information alone.

If a Study Has a Difference in the Differences, You