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3. Quantitative study design that involves exposing the same people to more than one condition.
5. Rigorous integrations of research evidence from multiple studies on a topic.
8. Involves assigning numbers to objects to represent the amount of an attribute that is present, using a specified set of rules.
11. Focuses on the lived experiences of humans and is an approach to learning what the life experiences of people are like and what they mean.
13. Criteria that are used to establish population characteristics and to determine who can participate in a study.
14. A type of test that involves the estimation of at least one parameter, the use of interval or ratio-level data, and the assumption of normally distributed variables.
15. A self report method in which descriptions of an event or situation to which respondents are asked to react.

1. Occur when values are restricted at the lower end.
2. Research that involves the collection and analysis of numeric information.
3. Involves the development and testing of a hypothesized casual explanation of a phenomenon.
4. A statement of predicted relationships between two or more variables.
6. Sometimes offered after data collection to provide participants with more information and an opportunity to air complaints.
7. Analyses that describe the status of some condition after the introduction of a program.
9. Changes resulting from the passage of time.
10. A careful appraisal of a study's strengths and weaknesses.
12. A type of measurement that involves ranking of objects based on their relative standing on an attribute.
16. Type of studies that have multiple points of data collection with different samples from the same population.