# 1981 MarginalMaximumLikelihoodEstima

- (Bock & Aitkin, 1981) ⇒ R Darrell Bock, and Murray Aitkin. (1981). “Marginal Maximum Likelihood Estimation of Item Parameters: Application of An EM Algorithm.” In: Psychometrika. doi:10.1007/BF02293801

**Subject Headings:** Item Response Theory (IRT); EM Algorithm; Latent Variable; Dichotomous Factor Analysis; Maximum Marginal Likelihood Estimation

## Notes

## Cited By

## Quotes

### Author Keywords

- estimation of item parameters, EM algorithm, item analysis, latent trait, dichotomous factor analysis, Law School Aptitude Test (LSAT)

### Abstract

Maximum likelihood estimation of item parameters in the marginal distribution, integrating over the distribution of ability, becomes practical when computing procedures based on an EM algorithm are used. By characterizing the ability distribution empirically, arbitrary assumptions about its form are avoided. The Em procedure is shown to apply to general item-response models lacking simple sufficient statistics for ability. This includes models with more than one latent dimension.

## References

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Author | volume | Date Value | title | type | journal | titleUrl | doi | note | year | |
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1981 MarginalMaximumLikelihoodEstima | R Darrell Bock Murray Aitkin | Marginal Maximum Likelihood Estimation of Item Parameters: Application of An EM Algorithm | 10.1007/BF02293801 | 1981 |

Facts about "1981 MarginalMaximumLikelihoodEstima"

Author | R Darrell Bock + and Murray Aitkin + |

doi | 10.1007/BF02293801 + |

title | Marginal Maximum Likelihood Estimation of Item Parameters: Application of An EM Algorithm + |

year | 1981 + |