Which of the following is most likely to be a repeated-measures design?   a. A study comparing motor-skills performance for left-handed adolescents and right-handed adolescents (incorrect naswer) b. A study comparing cholesterol levels before and after a diet featuring oatmeal c. A study comparing self-esteem for 6-year-old boys and 6-year-old girls d. A study comparing Facebook use for adolescents and over-30 adults

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