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

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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

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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


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Construct Validity
Convergent Validity
Trustworthiness
Honesty
Integrity
Divergent Validity
Trustworthiness
Food Preference
Physical Ability
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Content Validity
Test of Honesty
Honesty
Contamination ?
Deficiency ?
Relevance ?
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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
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Analyzing test data Looking at the Distribution
of Test Scores
MEAN (also median mode in this example)
Standard Deviation
Range
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Stats Representing Mean Differences

• T-tests

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




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APA code of ethics

• Accurate advertising of services
• Confidentiality of info gathered and reported
  from research
• Rights of human participants
• Informed consent
• Voluntary