Nine-year-old Emily Rosa was an author of an article in the Journal of the American Medical Association
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Nine-year-old Emily Rosa was an author of an article in the Journal of the American Medical Association after she tested professional touch therapists. Using a cardboard partition, she held her hand above the therapist’s hand, and the therapist was asked to identify the hand that Emily chose.
Determine whether the given description corresponds to an observational study or an experiment.
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