Define operational definition of a variable

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Reference no: EM133267561

Assignment - Variable Definitions Worksheet

Part A - Define each of the terms. Write a definition in your own words.

1. Conceptual definition

2. Self-report measure

3. Observational measure

4. Physiological measure

5. Categorical variable

6. Quantitative variable

7. Ordinal scale

8. Interval scale

9. Ratio scale

10. Reliability

11. Validity

12. Test-retest reliability

13. Interrater reliability

14. Internal reliability

15. Correlation coefficient

16. Slope direction

17. Strength

18. Average interitem correlation

19. Cronbach's alpha

20. Face validity

21. Content validity

22. Criterion validity

23. Known groups paradigm

24. Convergent validity

25. Discriminant validity

Part B - Review Questions

1. What is a variable? List at least five different variables and then describe at least two levels of each variable. For example, age is a variable. For adults, age has values that can be expressed in years starting at 18 and ranging upward. In an actual study, the age variable might be measured by asking for actual age in years, the year of birth, or providing a choice of age ranges such as 18-34, 35-54, and 55+. Sentence length is a variable. The values might be defined by the number of words in sentences that participants write in an essay.

2. Define "operational definition" of a variable. Give at least two operational definitions of the variables you thought of in the previous review question.

3. Distinguish among positive linear, negative linear, and curvilinear relationships.

4. What is the difference between the nonexperimental method and the experimental method?

Reference no: EM133267561

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