A group of college students believes that herbal tea has remarkable restorative powers.To test its theory,the group makes weekly visits to a local nursing home,visiting with residents,talking with them,and serving them herbal tea.After several months many of the residents are more cheerful and healthy.What is the lurking variable in this experiment?

Question

Quizplus · Accepted Answer

The lurking variable is the visits of the college students, as their interaction with the residents could contribute to the residents' improved mood and health, independent of the effects of the herbal tea.

A Group of College Students Believes That Herbal Tea Has