1. Statistical regression is a threat to the internal validity of a study whenever:
2. The __________ design is to quasi-experimental designs as the ABAB design is to single-case designs.
3. Which of the following is NOT a serious threat to validity of the pretest-posttest one-group design, O X O, is ___________.
4. Comparisons of quasi-experiments to true experiments reveal that __________.
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. The pretreatment observations in the interrupted time-series design are like the in a single-case experiment.
7. A strategy for establishing is to have an observer rate the same behavior sequence at different times throughout the study.
8. A social worker wished to evaluate the benefits of letting nursing home residents care for a plant. On one floor, the residents were given a plant to care for in their room. On another floor, residents were not given a plant. The social worker measured their activity levels before and after. This is an example of a(n) __________.
9. 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.
10. When well done, __________ is NOT a major source of error in surveys.
11. The threat to internal validity resulting from normal fluctuations in measures is called:
12. __________ is a strategy to reduce reactivity while __________ is a strategy to reduce observer bias.
