Presentation Transcript

1. Exploring the Equivalence and Rater Bias in AC Ratings Prof Gert Roodt – Department of Industrial Psychology and People Management, University of Johannesburg Sandra Schlebusch – The Consultants ACSG Conference 17 – 19 March 2010

2. Presentation Overview • Background and Objectives of the Study • Research Method • Results • Discussion and Conclusions • Recommendations

3. Background Construct Validity has long been a Problem in ACs (Jones & Born, 2008) Perhaps the Mental Models that the Raters use are Part of the Problem However, other Factors that Influence Reliability Should not be Neglected

4. Background Continued • To Increase Reliability Focus On all aspects of the Design Model (Schlebusch & Roodt, 2007): • Analysis • Design • Implementation • Context • Participants: • Process Owners (Simulation Administrator; Raters; Role-players)

5. Background Continued • Analysis (International Guidelines, 2009) • Competencies / Dimensions • Also Characteristics of Dimensions (Jones & Born, 2008) • Situations • Trends/Issues in Organisation • Technology

6. Background Continued • Design of Simulations • Fidelity • Elicit Behaviour • Pilot

7. Background Continued • Implementation • Context: • Purpose • Participants • Simulation Administration (Potosky, 2008) • Instructions • Resources • Test Room Conditions

8. Background Continued • Raters • Background • Characteristics • “What are Raters Thinking About When Making Ratings?” (Jones & Born, 2008)

9. Sources of Rater Bias • Rater Differences (background; experience, etc.) • Rater Predisposition (attitude; ability; knowledge; skills, etc.) • Mental Models

10. Objective of the Study The Focus of this Study is on Equivalence and Rater Bias in AC Ratings More specifically on: • Regional Differences • Age Differences • Tenure Differences • Rater Differences

11. Research Method Participants (Ratees) Region

12. Research Method (cont.) Participants (Ratees) Age

13. Research Method (cont.) Participants (Ratees) Tenure

14. Research Method (cont.) • Measurement: • In-Basket Test • Measuring Six Dimensions: • Initiative; • Information Gathering; • Judgement; • Providing Direction; • Empowerment; • Management Control • Overall In-Basket Rating

15. Research Method (cont.) Procedure: Ratings were Conducted by 3 Raters on 1057 Ratees

16. Results Initiative

17. Results (cont.) Initiative

18. Results (cont.) Information Gathering

19. Results (cont.) Information Gathering

20. Results (cont.) Judgement

21. Results (cont.) Judgement

22. Results (cont.) Providing Direction

23. Results (cont.) Providing Direction

24. Results (cont.) Empowerment

25. Results (cont.) Empowerment

26. Results (cont.) Control

27. Results (cont.) Control

28. Results (cont.) Overall In-Basket Rating

29. Results (cont.) Regional Differences

30. Results (cont.) Age Differences

31. Results (cont.)- tenure Tenure differences

32. Results (cont.) Rater Differences

33. Results (cont.) Post Hoc Tests: Judgement

34. Results (cont.)

35. Results (cont.) Post Hoc Tests: Providing Direction

36. Results (cont.)

37. Results (cont.) Post Hoc Tests: Empowerment

38. Results (cont.)

39. Results (cont.) Post Hoc Tests: Control

40. Results (cont.)

41. Results (cont.) Post Hoc Tests: In-Basket

42. Results (cont.)

43. Results (cont.) Non-Parametric Correlations

44. Discussion • Clear Regional; Age and Tenure Differences Do Exist among Participants • Possible Sources of the Differences: • Regional Administration of In-Basket • Thus Differences in Administration Medium (Potosky, 2008) • Different Administrators (Explaining Purpose; Giving Instructions; Answering Questions) • Different Resources • Different Test Room Conditions

45. Discussion (cont.) • Differences Between Participants Regionally: • English Language Ability (not tested) • Motivation to Participate in the Assessment (not tested) • Differences in Employee Selection Processes as well as Training Opportunities (Burroughs et al., 1973) • Simulation Fidelity (not tested)

46. Discussion (cont.) • Clear Regional; Age and Tenure Differences Do Exist among Participants • Supporting Findings by Burroughs et al. (1973) • Age does Significantly Influence AC Performance • Participants from Certain Departments Perform Better

47. Discussion (cont.) • Appropriateness of In-Basket for Ratees • Level of Complexity • Situation Fidelity Recommendations: • Ensure Documented Evidence (Analysis Phase in Design Model) • Pilot In-Basket on Target Ratees (Design Phase of Design Model) • Shared Responsibility of Service Provider and Client Organisation

48. Discussion (cont.) • Context in Which In-Basket Administered • Purpose Communicated Recommendations: • Ensure Participants (Ratees) and Process Owners Understand and Buy-into Purpose

49. Discussion (cont.) • Consistent Simulation Administration: • Instructions Given Consistently • Interaction with Administrator • Appropriate Resources Available During Administration • TestRoom Conditions Appropriate for Testing Recommendations: • Ensure All Administrators Trained • Standardise Test Room Conditions

50. Discussion (cont.) • Rater Differences do Exist • Possible Sources of Rater Differences: • Background (All from a Psychology Background, with Management Experience) • Characteristics such as Personality (Bartels & Doverspike) • Owing to Cognitive Load on Raters • Owing to Differences in Mental Models (Jones & Born, 2008)

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