1. The __________ design is to quasi-experimental designs as the ABAB design is to single-case designs.
2. Hartup recorded the type and frequency of aggressive behaviors seen in preschool children. He employed a(n) __________.
3. True experiments differ from quasi-experiments in having:
4. As compared to indirect measures of behavior, direct observations have __________.
5. 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 __________.
6. Statistical regression is a threat to the internal validity of a study whenever:
7. __________ measures have zero reactivity.
8. A researcher is interested in studying drug use in adolescence. He gathers a list of all high schools in the nation. He randomly selects 500 schools. From these schools, he randomly selects 3000 homerooms. From each homeroom, he selects 20 students using simple random sampling. His sampling process is an example of __________.
9. A school psychologist compared the achievement scores of children who either had or had not been socially promoted. This study is using __________ data.
10. In _____________, a sample is selected from the list of population members by randomly selecting the first subject and then selecting the other members of the sample according to a prearranged scheme—by taking, say, every 5th, 1Oth, or 20th person on the list, until the sample is complete.
11. The Notel researchers evaluated the rival hypothesis that observed increases in children's aggression after the introduction of television were due to maturation by:
12. When well done, __________ is NOT a major source of error in surveys.
