Klier and Linn, âNew-vehicle Characteristics and the Cost of the Corporate Average Fuel Economy Standard.â Mark R. Jacobsen, âEvaluating U.S. Fuel Economy Standards in a Model with Producer and Household Heterogeneity,â American Economic Journal: Economic Policy, Vol. 5, No. 2 (May 2013), pp. 1489â87. Ibid., Table 8.
The placebo effect can make some treatments seem like they help certain symptoms, when in fact they do nothing to directly cause a change in the disease. Other factors that are sometimes lumped in with the placebo effect can also make a treatment appear to help even when it does nothing for the illness.n the past, some researchers have questioned whether thereâs convincing proof that the placebo effect is a real effect. But there are studies showing that the placebo effect is real in some situations. For example, scientists have recorded brain activity in response to placebo.
For instance, some people in a study might be given a new drug to lower cholesterol. Others would get a placebo. None of the people in the study will know if they got the real treatment or the placebo. Researchers then compare the effects of the drug and the placebo on the people in the study.That way, they can determine the effectiveness of the new drug and check for side effects.or instance, the person's symptoms may improve. Or the person may have what appears to be side effects from the treatment. These responses are known as the placebo effect.. There are some conditions in which a placebo can produce results even when people know they are taking a placebo.