HUNTERTUTORING

Psychometrics

Undergraduate · Statistics

Syllabus focus

Standard syllabus · STEM / applied

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$60.00 · 60 min · Undergraduate · Online ($60/hr)

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Topics typically covered

Standard syllabus

Classical test theory

  • Reliability: test-retest, internal consistency
  • Cronbach's alpha and composite reliability
  • Validity: content, criterion, and construct
  • Item analysis: difficulty and discrimination
  • Standard error of measurement

Factor analysis and scaling

  • Exploratory factor analysis for scale development
  • Confirmatory factor analysis (introduction)
  • Item response theory: Rasch and 2PL models (intro)
  • Differential item functioning (overview)
  • Norming and score equating (introduction)

Applications

  • Designing surveys and psychological instruments
  • Ethical testing standards
  • Computerized adaptive testing (overview)
  • Reporting measurement quality in research

STEM / applied

Applied psychometrics

  • Scale development projects with real data
  • Software: R (psych, lavaan intro), SPSS, or Mplus preview
  • Analyzing Likert and polytomous item data
  • Workplace and educational assessment case studies
  • Interpreting fit indices for factor models
  • Communicating reliability to non-technical audiences

Additional applied practice

  • Reviewing assumptions with domain experts
  • Documenting analysis choices for reproducibility
  • Sensitivity analyses for key modeling decisions
  • Connecting results to the original research or business question

Notes

Common in psychology and education departments. Introduces classical test theory and item response theory at an undergraduate level.