Dr.MacMillan conducts a study in which she gives some students (chosen randomly) logically organized learning material; she gives other students the same material presented in a haphazard, unpredictable sequence.She finds that students with the organized material remember more.This study can best be described as a(n):

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This study is best described as an experimental study because Dr. MacMillan manipulates one variable (the organization of the learning material) to see its effect on another variable (how much students remember). This manipulation of variables and control of conditions are key characteristics of experimental studies.

DrMacMillan Conducts a Study in Which She Gives Some Students