Which designs provide the most clear and definitive tests of causal connections?

Question

Quizplus · Accepted Answer

Experimental designs provide the most clear and definitive tests of causal connections because they involve manipulating the independent variable and randomly assigning participants to groups, allowing for control over extraneous variables and inferences about cause and effect relationships. Correlational designs do not allow for causal inferences, variable designs are not a specific type of research design, and cross-sectional designs do not involve manipulating variables.

Which Designs Provide the Most Clear and Definitive Tests of Causal