1. General Issues in Scaling

2. What Is a Scale? The assignment...

3. What Is a Scale? The assignment......of objects... Are you willing to permit immigrants to live in your country? Are you willing to permit immigrants to live in your neighborhood? Would you let your child marry an immigrant?

4. What Is a Scale? The assignment......of objects......to numbers... Are you willing to permit immigrants to live in your country? Are you willing to permit immigrants to live in your neighborhood? Would you let your child marry an immigrant?

5. What Is a Scale? The assignment......of objects......to numbers......according to a rule... Are you willing to permit immigrants to live in your country? Are you willing to permit immigrants to live in your neighborhood? Would you let your child marry an immigrant?

6. What Is a Scale? The assignment......of objects......to numbers......according to a rule... Are you willing to permit immigrants to live in your country? Are you willing to permit immigrants to live in your neighborhood? Would you let your child marry an immigrant? Cumulative

7. Scale Versus Response Scale Results from a process Is used to collect the response for an item Scale Response Scale

8. Scale Versus Response Scale Scale Response Scale

9. Scale versus Response Scale Results from a process Scale Response Scale

10. Scale Versus Response Scale Results from a process. Each item on scale has a scale value. Is used to collect the response for an item. Scale Response Scale

11. Scale Versus Response Scale Results from a process. Each item on scale has a scale value. Is used to collect the response for an item. Item not associated with a scale value. Scale Response Scale

12. Scale Versus Response Scale Results from a process. Each item on scale has a scale value. Is used to collect the response for an item. Item not associated with a scale value. Refers to a set of items. Scale Response Scale

13. Scale Versus Response Scale Results from a process. Each item on scale has a scale value. Is used to collect the response for an item. Item not associated with a scale value. Refers to a set of items. Used for a single item. Scale Response Scale

14. Purposes of Scaling  Is the construct or concept a single dimensional one?  What dimensions underlie some ratings?  For assigning values to responses. Hypothesis testing Exploration Scoring

15. Dimensionality One-dimensional constructs

16. Dimensionality Height

17. Dimensionality Height TallerShorter

18. Dimensionality Height TallerShorter Thirst

19. Dimensionality Height TallerShorter Thirst More thirsty Less thirsty

20. Dimensionality One-dimensional constructs Height TallerShorter Thirst More thirsty Less thirsty Self-esteem

21. Dimensionality One-dimensional constructs Height TallerShorter Thirst More thirsty Less thirsty Self-esteem MoreLess

22. Dimensionality Two-dimensional construct

23. Dimensionality Academic ability Two-dimensional Construct

24. Dimensionality Academic ability Two-dimensional construct Verbal

25. Dimensionality Academic ability Two-dimensional construct BetterWorse Verbal

26. Dimensionality Academic ability Two-dimensional construct BetterWorse Quantitative Verbal

27. Dimensionality Academic ability Two-dimensional construct BetterWorse Quantitative Verbal Better Worse

28. Dimensionality Three-dimensional construct

29. Dimensionality

30. Dimensionality Semanticdifferential(meaning)

31. Dimensionality Semanticdifferential(meaning) Evaluation

32. Dimensionality Semanticdifferential(meaning) Evaluation UnfavorableFavorable

33. Dimensionality Semanticdifferential(meaning) Evaluation Potency UnfavorableFavorable

34. Dimensionality Semanticdifferential(meaning) Evaluation Potency UnfavorableFavorable Powerful Powerless

35. Dimensionality Semanticdifferential(meaning) Evaluation Potency Activity UnfavorableFavorable Powerful Powerless

36. Dimensionality Semanticdifferential(meaning) Evaluation Potency Activity UnfavorableFavorable Powerful Powerless Active Passive

37. Types of Scales l Easier to understand l Useful for understanding multidimensional l Many concepts may be one-dimensional l Reflect multiple properties simultaneously One-dimensional Multidimensional

38. The Major One-Dimensional Scale Types l Thurstone l Likert l Guttman