A Primer of Item Response Theory.

Abstract

This book is an introduction to Item Response Theory (IRT) (also called Item Characteristic Curve Theory, or latent trait theory). It is written for the testing practitioner with minimum training in statistics and psychometrics. It presents in simple language and with examples the basic mathematical concepts needed to understand the theory. Then, building upon those concepts, it develops the basic concepts of Item Response Theory: item parameters, item response function, test characteristic curve, item information functions, test information curve, relative efficiency curve, and score information curve. The maximum likelihood and Bayesian modal estimates of ability are described with illustrative examples. After a discussion of assumptions and available computer programs, some practical applications are presented, i.e. equating scales, tailored testing, item cultural bias, and setting pass-fail cut-offs. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1978
Accession Number
ADA063072

Entities

People

  • Thomas A. Warm

Organizations

  • United States Coast Guard

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Coast Guard
  • Computer Programs
  • Computers
  • Factor Analysis
  • Information Science
  • Maximum Likelihood Estimation
  • Measuring Instruments
  • North America
  • Probability
  • Psychological Tests
  • Psychology
  • Reliability
  • Statistics
  • Theorems
  • United States

Readers

  • Psychometric Testing or Psychological Assessment.
  • Statistical inference.
  • Theoretical Analysis.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference