Complex designs enhance researchers' ability to test hypotheses derived from theories because complex designs
A)require more specific operational definitions of concepts.
B)insure that the null hypothesis will be false.
C)have higher internal validity.
D)make it possible to test both main effects and interaction effects.

Question

Quizplus · Accepted Answer

Complex designs allow researchers to test both main effects (the effects of each independent variable on the dependent variable) and interaction effects (the combined effect of two or more independent variables on the dependent variable). This can provide a more nuanced understanding of the relationships between variables and help to support or refute theoretical predictions. While complex designs do require more specific operational definitions of concepts, they do not necessarily insure that the null hypothesis will be false or have higher internal validity than simpler designs.

Complex Designs Enhance Researchers' Ability to Test Hypotheses Derived from Theories