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PSY 231: Introduction to Industrial and Organizational Psychology

PSY 231: Introduction to Industrial and Organizational Psychology. Psychometrics, Basic Statistics, & Ethics of Research. Some important terms…. Measurement = assignment of numbers to objects or events such as individual attributes.

emmanuel-garrett
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PSY 231: Introduction to Industrial and Organizational Psychology

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  1. PSY 231: Introduction to Industrial and Organizational Psychology Psychometrics, Basic Statistics, & Ethics of Research

  2. Some important terms… Measurement = assignment of numbers to objects or events such as individual attributes. Attribute = any characteristic of an individual that can be measured and can vary from person to person

  3. Time 1 Time 2 Test-Retest Reliability ≈ Parallel Forms Reliability Form A Form B Form C ≈ ≈ Internal Consistency Reliability Item 1 Item 2 Item 3 ≈ ≈

  4. Construct Validity Convergent Validity Honesty Trustworthiness Integrity Divergent Validity Trustworthiness Food Preference Physical Ability

  5. Content Validity Test of Honesty Honesty Contamination  Deficiency  Relevance 

  6. Criterion Validity Time 2: Performance Rating of the employee on-the-Job Time 1 Pre-employment Test Predictive Validity Job Applicant Time 1: Compare test score and appraisal ratings of current employees Concurrent Validity Current Employee Appraisal Ratings

  7. Analyzing test data – Looking at the Distribution of Test Scores MEAN (also median & mode in this example) Standard Deviation Range

  8. Stats Representing Mean Differences T-tests ANOVA test

  9. Stat Representing Relationships Between Variables: Correlation

  10. Regression Test (e.g., Math Skills) Job Performance r = .60 r2 = .36 r2

  11. Meta-Analysis Study 1 results Study 2 results Study 4 results Study 3 results + + … +

  12. APA code of ethics • Accurate advertising of services • Confidentiality of info gathered and reported from research • Rights of human participants • Informed consent • Voluntary

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