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PSY 231: Introduction to Industrial and Organizational Psychology

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PSY 231: Introduction to Industrial and Organizational Psychology Psychometrics, Basic Statistics, & Ethics of Research Some important terms Measurement ... – PowerPoint PPT presentation

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Title: PSY 231: Introduction to Industrial and Organizational Psychology


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
(No Transcript)
5
Construct Validity
Convergent Validity
Trustworthiness
Honesty
Integrity
Divergent Validity
Trustworthiness
Food Preference
Physical Ability
6
Content Validity
Test of Honesty
Honesty
Contamination ?
Deficiency ?
Relevance ?
7
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
8
Analyzing test data Looking at the Distribution
of Test Scores
MEAN (also median mode in this example)
Standard Deviation
Range
9
Stats Representing Mean Differences
  • T-tests

ANOVA test
10
Stat Representing Relationships Between
Variables Correlation
11
Regression
Test (e.g., Math Skills)
Job Performance
r .60 r2 .36
r2
12
Meta-Analysis
Study 1 results
Study 2 results
Study 4 results
Study 3 results




13
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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