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Week 11 collecting_data

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Transcript

  • 1. 427-302 Methods of SocialSciences Research
  • 2. •• CTT• Reliability• Validity• SPSS
  • 3. ?••
  • 4. (Measure) (Attribute) (Object) (Number) , . .
  • 5. (Measure) (Attribute) (Object) (Number) ,(Test, Measure) (Construct Variable) (Subject) (Variable Values)
  • 6. TOEFLS JDI(Job Description (Job Satisfaction) Index)
  • 7. • (Items)• (Measure or Test)
  • 8. ••
  • 9. • (Objectivity)• (Difficulty)• (Discrimination)
  • 10. ObjectivitySubject Reality Object SubjectivityRealitySubjectReality ObjectSubject
  • 11. • (Reliability)• (Validity)
  • 12. Review of Classical Test Theory• Variance o True Scores o Errors
  • 13. Observed Scores• 75 = 70 + 5• 80 = 70 + 10
  • 14. True Scores• Reliability o Var (T) / Var (X) o Var (T) / Var (T) + Var (E)• Reliabilty = Rx1x2
  • 15. Errors• Systematic Error• Random Error
  • 16. Random Error
  • 17. Systematic Error
  • 18. Reliability VS. Validity• Reliabilty = True Score + Systematic Error = T + ES• Validity = True Score =T
  • 19. Reliability VS. Validity
  • 20. Reliability VS. Validity
  • 21. Reliability• Stability (Times)• Equivalence (Forms)• Consistency (Items)
  • 22. Test-Retest
  • 23. Stability (Times)• Test-Retest
  • 24. Parallel Form
  • 25. Inter-Rater
  • 26. Equivalence (Forms)• Parallel Form 2• Inter-Rater 2
  • 27. Consistency (Items)• Average Inter-Item Correlation• Average Item-Total Correlation• Split-Half Correlation• Cronbachs Alpha
  • 28. Average Inter-Item Correlation
  • 29. Average Item-Total Correlation
  • 30. Split-Half Correlation
  • 31. Cronbach’ s Alpha
  • 32. Cronbach’ s Alpha• Cronbachs Alpha
  • 33. (Validity)• (Research Validity)• (Measurement Validity)
  • 34. Research Validity
  • 35. Classicial Classification of Validity• (Face Validity)• Content Validity• Criterion-Related Validity• Construct Validity
  • 36. (Face Validity)•
  • 37. Content Validity•
  • 38. Criterion-Related Validity•• 2 Concurrent Validity Predictive Validity
  • 39. Concurrent Validity••
  • 40. Predictive Validity•• 3
  • 41. Construct Validity••
  • 42. Construct Validity
  • 43. Validity• o Face Validity o Content Validity• o Concurrent Validity o Predictive Validity• o Construct Validity
  • 44. SPSS
  • 45. ••
  • 46. • (Objectivity)• (Difficulty)• (Discrimination)
  • 47. •• Pretest
  • 48. • (Percent)
  • 49. • Item-Total Correlation• Corrected Item-Total Correlation• t-test -
  • 50. • Reliability• Validity
  • 51. Reliability• Correlation o Test-Retest o Parallel Forms o Split Half• Cronbachs Alpha
  • 52. Validity•• Known-Group Technique t-test• Correlation• Factor Analysis (EFA vs CFA)• Multitrait-Multimethod Matrix (MTMM)
  • 53. EFA X1 e1F1 X2 e2 X3 e3 X4 e4F2 X5 e5 X6 e6 X7 e7F3 X8 e8 X9 e9
  • 54. CFA X1 e1F1 X2 e2 X3 e3 X4 e4F2 X5 e5 X6 e6 X7 e7F3 X8 e8 X9 e9
  • 55. Multitrait-Multimethod Matrix