Crum, A.J., & Langer, E.J. (2007). Mind-set matters: Exercise and the placebo effect. Psychological Science, 18 (2), 165-171.
Please read this article thoroughly. (1) Identify and define the operational definition of two variables used in the study (they can be either/both independent/dependent variables). (2) Identify, in detail, ( and describe in your own words) the basic method that was followed (participants, materials and procedure).