Briefly describe the nature of the difference for each of these four dimensions. Briefly describe the three types of problems that can result from contamination. Distinguish between evaluation of outcome and evaluation of efficiency as these are used in program evaluation. Identify three properties of psychotherapy that make this treatment approach difficult to study in a true experiment. Identify three of the reasons why Seligman suggests that the Consumer Reports study shuold be taken seriously.
Psychotherapy returns people to normality.
A physician wants to test the effectiveness of a new allergy medication. The physician consults a researcher who regularly conducts clinical trials. The physician tells the researcher that she has a backlog of 100 patients she is treating effectively with the prevailing medication but who could potentially benefit even more from the new medication. In clinical trials involving tests of new medical treatments it may be extremely difficult to get patients to agree to be randomly assigned to either the treatment or the control group. In these situations researchers can use matched groups designs natural groups designs yoked control designs quasi-experimental designs A high school teacher was conducting a test of a new approach to teaching math.