1. The OXO design applied to group data is called the:
2. Whenever a researcher schedules a treatment following high or low scores on the dependent measure or selects subjects based upon extreme scores he should be concerned with the threat to internal validity of __________.
3. The threat to internal validity resulting from normal fluctuations in measures is called:
4. __________ measures have zero reactivity.
5. Which of the following is an example of probability sampling?
6. In nonprobability sampling, the likelihood of selecting a particular subject is __________, while in probability sampling, the likelihood of selecting a particular subject is __________.
7. 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 __________.
8. The pretreatment observations in the interrupted time-series design are like the in a single-case experiment.
9. Rosemary Wood, the secretary for President Nixon, erased portions of the tapes where the President and his staff discussed the Watergate break-in. Later scholars have examined these tapes to assess the degree of integrity of the Nixon Presidency. This example represents the problem of __________ in archival data.
10. Footprints, fingerprints, patterns of blood spatter, DNA from blood samples, and fiber traces used by forensic experts to reconstruct a crime are:
11. The student teacher waited a week after being introduced to her subjects before conducting her observation in order to __________.
12. Samuel Stouffer discovered that the greatest source of error or bias in the scientific use of surveys is:1 Based on his study of how Watson and Crick discovered the structure of DNA and how Darwin developed the theory of evolution, Robert Weisberg concluded that:
