Crossword Puzzle of Unit 0

5. repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding can be reproduced.
6. an explanation using an integrated set of principles that organizes observations and predicts behaviors or events.
7. the extent to which a test or experiment measures or predicts what it is supposed to.
8. the post experimental explanation of a study, including its purpose and any deceptions, to its participants.
9. a measure of the extent to which two factors vary together, and thus of how well either factor predicts the other.
12. a bar graph depicting a frequency distribution.
15. anything that can vary and is feasible and ethical to measure.
16. a non-experimental technique for obtaining the self-reported attitudes or behaviors of a particular group, usually by questioning a representative, random sample of the group.

1. a research method in which an investigator manipulates one or more factors (independent variables) to observe the effect on some behavior or mental process (the dependent variable). By random assignment of participants, the experimenter aims to control other relevant factors.
2. all those in a group being studied, from which random samples may be drawn. (Note: Except for national studies, this does not refer to a country’s whole population.)
3. the middle score in a distribution; half the scores are above it and half are below it.
4. the most frequently occurring score(s) in a distribution.
10. the difference between the highest and lowest scores in a distribution.
11. the possibility that an idea, hypothesis, or theory can be disproven by observation or experiment.
12. testable prediction, often implied by a theory.
13. a graphed cluster of dots, each of which represents the values of two variables. The slope of the points suggests the direction of the relationship between the two variables. The amount of scatter suggests the strength of the correlation (little scatter indicates high correlation).
14. the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.