Week 10 Slides.

Slides:



Advertisements
Similar presentations
VALIDITY AND RELIABILITY
Advertisements

What is a Good Test Validity: Does test measure what it is supposed to measure? Reliability: Are the results consistent? Objectivity: Can two or more.
Combining Test Data MANA 4328 Dr. Jeanne Michalski
Chapter 10 Decision Making © 2013 by Nelson Education.
Simple Regression Equation Multiple Regression y = a + bx Test Score Slope y-intercept Predicted Score  y = a + b x + b x + b x ….. Predicted Score 
Chapter 4 Validity.
Reliability or Validity Reliability gets more attention: n n Easier to understand n n Easier to measure n n More formulas (like stats!) n n Base for validity.
Discrim Continued Psy 524 Andrew Ainsworth. Types of Discriminant Function Analysis They are the same as the types of multiple regression Direct Discrim.
Validity Does test measure what it says it does? Is the test useful? Can a test be reliable, but not valid? Can a test be valid, but not reliable?
1 Measurement PROCESS AND PRODUCT. 2 MEASUREMENT The assignment of numerals to phenomena according to rules.
Part 5 Staffing Activities: Employment
Chapter 7 Evaluating What a Test Really Measures
Scales and Indices While trying to capture the complexity of a phenomenon We try to seek multiple indicators, regardless of the methodology we use: Qualitative.
Ch 6 Validity of Instrument
Copyright © 2012 Wolters Kluwer Health | Lippincott Williams & Wilkins Chapter 14 Measurement and Data Quality.
Reliability REVIEW Inferential Infer sample findings to entire population Chi Square (2 nominal variables) t-test (1 nominal variable for 2 groups, 1 continuous)
Validity. Face Validity  The extent to which items on a test appear to be meaningful and relevant to the construct being measured.
Chapter Seven Measurement and Decision-Making Issues in Selection.
Validity Is the Test Appropriate, Useful, and Meaningful?
Counseling Research: Quantitative, Qualitative, and Mixed Methods, 1e © 2010 Pearson Education, Inc. All rights reserved. Basic Statistical Concepts Sang.
Reliability vs. Validity.  Reliability  the consistency of your measurement, or the degree to which an instrument measures the same way each time it.
6. Evaluation of measuring tools: validity Psychometrics. 2012/13. Group A (English)
Part 5 Staffing Activities: Employment
Discriminant Analysis Discriminant analysis is a technique for analyzing data when the criterion or dependent variable is categorical and the predictor.
Measurement Models: Exploratory and Confirmatory Factor Analysis James G. Anderson, Ph.D. Purdue University.
Multiple Discriminant Analysis
Combining Test Data MANA 4328 Dr. Jeanne Michalski
Validity Validity: A generic term used to define the degree to which the test measures what it claims to measure.
Multivariate Data Analysis Chapter 1 - Introduction.
Testing, Measurement & Assessment Unit 5 Seminar - Validity.
Validity and Item Analysis Chapter 4. Validity Concerns what the instrument measures and how well it does that task Not something an instrument has or.
Validity and Item Analysis Chapter 4.  Concerns what instrument measures and how well it does so  Not something instrument “has” or “does not have”
Week 4 Slides. Conscientiousness was most highly voted for construct We will also give other measures – protestant work ethic and turnover intentions.
© 2006 by The McGraw-Hill Companies, Inc. All rights reserved. 1 Chapter 12 Testing for Relationships Tests of linear relationships –Correlation 2 continuous.
CJT 765: Structural Equation Modeling Class 8: Confirmatory Factory Analysis.
Measurement MANA 4328 Dr. Jeanne Michalski
Scales and Indices While trying to capture the complexity of a phenomenon We try to seek multiple indicators, regardless of the methodology we use: Qualitative.
Topic #5: Selection Theory
Chapter 6 - Standardized Measurement and Assessment
 Seeks to determine group membership from predictor variables ◦ Given group membership, how many people can we correctly classify?
Measurement and Scaling Concepts
Regression. Why Regression? Everything we’ve done in this class has been regression: When you have categorical IVs and continuous DVs, the ANOVA framework.
© 2013 by Nelson Education1 Decision Making. Chapter Learning Outcomes  After reading this chapter you should:  Appreciate the complexity of decision.
Reliability and Validity
Chapter 6 Staffing Decisions.
Chapter 2 Theoretical statement:
Principles of Language Assessment
MEASUREMENT: RELIABILITY AND VALIDITY
Correlational Studies
Test Design & Construction
Evaluation of measuring tools: validity
Journalism 614: Reliability and Validity
Regression.
12 Inferential Analysis.
MANA 4328 Dr. Jeanne Michalski
Week 3 Class Discussion.
پرسشنامه کارگاه.
PSY 614 Instructor: Emily Bullock Yowell, Ph.D.
III Choosing the Right Method Chapter 10 Assessing Via Tests
Reliability and Validity of Measurement
Reliability, validity, and scaling
Week 12 Slides.
MANA 4328 Dr. George Benson Combining Test Data MANA 4328 Dr. George Benson 1.
RESEARCH METHODS Lecture 18
Week 11 Slides.
EPSY 5245 EPSY 5245 Michael C. Rodriguez
12 Inferential Analysis.
Aaker, Kumar, Day Seventh Edition Instructor’s Presentation Slides
REVIEW I Reliability scraps Index of Reliability
DM’ing with Multiple Predictors
Presentation transcript:

Week 10 Slides

Assigned Readings Kacmar et al. (2013) Organizational Politics Kuncel & Sackett (2013) Assessment Centers

Utility Selection ratio: number of people hired / number of people available to hire Baserate: ratio of people that would be successful compared to the total available. Either compared to Those that are hired Those that are available

Cut-scores Relative Cut Scores (Norm-Referenced) Distributive comps Known-Groups Method Fixed Cut Scores (Absolute Cut scores) Angoff Method Multiple Hurdles vs. Compensatory More expensive last

Cutoff Scores Predictive Yield Discriminant Analysis Book Mark Method Takes into account selection ratio and base rate Discriminant Analysis Book Mark Method

Overall Assessment Cutoffs Clinical Prediction Subjective Unit Weighting Total score Rational Weighting Multiple predictors by a predetermined weight Multiple regression Weights are set by a statistical procedure

Expectancy data Hit: correct classification (Hit Rate) Those that do well on this test do well on the job Miss: incorrect classification (Miss Rate) False Positive: Those that do well on this test do poorly on the job False Negative: Those that do poorly on this test do well on the job

Content & Face Validity Do the items match up with the definition? Do they adequately assessing the testing universe Is the content validity ratio high enough? If there is an issue with content validity, what are the implications for the organization in regards to using it?

Factorial Validity What is our expected factor structure? Is the construct homogenous? Exploratory Factor Analysis Interpret Scree Plot Is the reliability estimate high enough? Is it a problem if the factor structure is not supported?

Content Validity Ratio Judges rate item on scale of importance Essential, important, not-essential CVRi = (ne – (N/2))/ (N/2) CVR = value of the item n = number of experts saying the item is essential N = total number of experts

Construct Validity Convergent vs. Discriminant Two Ways to assess Multi-trait Multi-Method matrix Correlation matrix with theoretically related, unrelated, and criterion-related variables

Criterion Validity Two ways Correlation Table Multiple Regression Results R2: How much variance accounted for by predictors Beta values: How much unique variance accounted for Is multicollinearity and issue and is the measure redundant with the current battery of tests?

Additional Issues Adverse Impact Face Validity and Faking Determine if it is an issue and what can be done, if anything, about it. Face Validity and Faking Is the method and cost of administration feasible for the current organization?