1. A graduate student was observing the depressive behavior of a patient on the unit. She was kept unaware of when the patient started treatment. Such a control to reduce observer bias is called __________.
2. The use of typical cases is an example of __________ while the use of clusters is an example of __________.
3. In the interrupted time-series design __________.
4. Statistical regression is a threat to the internal validity of a study whenever:
5. The Notel researchers evaluated the rival hypothesis that observed increases in children's aggression after the introduction of television were due to maturation by:
6. A researcher conducts a week of daily observations of depressive behavior in a group of bipolar patients. She then implements drug treatment for one week, continuing her observations. In the third week she removes the drug treatment, and in the fourth week she administers the drug again. This researcher is using a __________ design.
7. The __________ design is to quasi-experimental designs as the ABAB design is to single-case designs.
8. In __________ sampling, the population is classified into subgroups and simple random samples are taken from each subgroup.
9. The accuracy of estimating population values from a sample is a function of all of the following EXCEPT:
10. Footprints, fingerprints, patterns of blood spatter, DNA from blood samples, and fiber traces used by forensic experts to reconstruct a crime are:
11. A strategy for establishing is to have an observer rate the same behavior sequence at different times throughout the study.
12. A school psychologist compared the achievement scores of children who either had or had not been socially promoted. This study is using __________ data.
