An experimental design
A)is one in which the investigator has direct control over at least one independent variable.
B)is less capable of providing evidence of causal relationships than is an exploratory design.
C)is less internally valid than a descriptive study.
D)should be used only in realistic situations.
E)is best suited for longitudinal analysis.

Question

Quizplus · Accepted Answer

In an experimental design, the investigator manipulates at least one independent variable and has direct control over it, which allows for the establishment of cause-and-effect relationships.

An Experimental Design