A researcher who examines the causal relationship between amount of exercise (randomly assigned as 30 minutes per day or none) and memory abilities is using the ______ research design.
A) experimental
B) quasi-experimental
C) case study
D) correlational

Question

Quizplus · Accepted Answer

An experimental research design is the best choice because the researcher has randomly assigned participants to either an exercise group (30 minutes per day) or a control group (no exercise). This allows the researcher to manipulate the independent variable (amount of exercise) and observe the effects on the dependent variable (memory abilities). Additionally, the researcher can control for potential confounding variables, which strengthens the ability to establish a cause-and-effect relationship between exercise and memory abilities.

A Researcher Who Examines the Causal Relationship Between Amount of Exercise