Erickson et al. (2011) randomly assigned older adults to one of two activities: a gentle stretching condition or a more intense aerobic exercise condition. Because Erickson et al. randomly assigned participants to activities and because they deliberately manipulated the activity, their investigation is an example of the _____ research method.
A)correlational
B)experimental
C)case study
D)naturalistic observation

Question

Quizplus · Accepted Answer

Erickson et al.'s investigation is an example of the experimental research method because they randomly assigned participants to activities (manipulated the independent variable) and then observed the effects on their cognitive function (measured the dependent variable).

Erickson Et Al