Across
- 2. A research method that manipulates variables to test cause and effect.
- 3. A procedure in which participants and interacting researchers do not know who receives the active treatment.
- 8. The variable measured in an experiment.
- 9. An explanation that organizes observations and generates predictions.
- 10. Selecting participants by chance from a population.
- 11. A testable prediction about a study's outcome.
- 12. Observing behavior in its natural environment.
- 15. The entire group researchers want to study.
- 17. -An in-depth investigation of one person or a small group.
- 18. A precise explanation of how a variable is measured or manipulated.
- 19. A research method that collects answers about attitudes or behaviors.
- 20. A relationship between two variables.
- 21. The most frequently occurring score.
Down
- 1. A measure of how much scores vary around the mean.
- 4. The variable deliberately manipulated in an experiment.
- 5. A bell-shaped distribution with most scores near the average.
- 6. The difference between the highest and lowest scores.
- 7. Repeating a study to see whether similar findings occur.
- 13. The middle score when values are arranged in order.
- 14. An outside variable that may influence study results.
- 16. The arithmetic average of a set of scores.