Karl Gustav Jöreskog

Karl Gustav Jöreskog
Born	(1935-04-25) 25 April 1935 Åmål, Sweden
Residence	Uppsala, Sweden
Citizenship	Sweden
Nationality	Swedish
Fields	Statistics Psychometrics
Institutions	Uppsala University Educational Testing Service
Alma mater	Uppsala University
Doctoral advisor	Herman Wold
Known for	Linear structural equation models LISREL software Maximum likelihood factor analysis
Influences	Peter Whittle

Karl Gustav Jöreskog (born 25 April 1935) is a Swedish statistician. Jöreskog is a Professor Emeritus at Uppsala University, and a co-author (with Dag Sörbom) of the LISREL statistical program. He is also a member of the Royal Swedish Academy of Sciences. Jöreskog received his bachelor's, master's, and doctoral degrees in Uppsala University. He is also a former student of Herman Wold. He was a statistician at Educational Testing Service (ETS) and a visiting professor at Princeton University.

Research

Jöreskog proposed a reliable numerical method for computing maximum-likelihood estimates in factor analysis; similarly reliable methods were also proposed by Gerhard Derflinger, Robert Jennrich, and Stephen M. Robinson at roughly the same time. Jöreskog's Fortran codes helped to popularize factor analysis around the world. While working at the Educational Testing Service and giving lectures at Princeton University, Jöreskog proposed a linear model for the analysis of covariance structures, a fundamental contribution to structural equation modeling (SEM).

His other research interests include multivariate analysis, item response theory, statistical computing, and factor-analysis in geology.

Awards

In 2007 Jöreskog received the Award for distinguished scientific applications of psychology from the American Psychological Association (APA).

Selected bibliography

• Jöreskog, K. G. (1969). A general approach to confirmatory maximum likelihood factor analysis. Psychometrika, 34, 183–202.
• • Reprinted as

• Jöreskog, K. G., & Sörbom, D. (1979). Advances in factor analysis and structural equation models. New York: University Press of America.
• Jöreskog, K. G., & Moustaki, I. (2001). Factor analysis of ordinal variables: A comparison of three approaches. Multivariate Behavioral Research, 36, 347–387.

Festschrift

• Cudeck, R., Jöreskog, K. G., Du Toit, S. H. C., & Sörbom, D. (2001). Structural Equation Modeling: Present and Future : a Festschrift in Honor of Karl Jöreskog. Scientific Software International.

See also

• Causality
• Confirmatory factor analysis
• Computational statistics
• Exploratory factor analysis
• Factor analysis
• Latent variable
• LISREL
• Maximum likelihood
• Measurement theory
• Multivariate analysis
• Multivariate statistics
• Ordinal variable
• Psychometrics
• Structural equation model
• Uppsala University
• Wold, Hermann

External links

• Jöreskog's presentation of the econometric research that was recognized with the 2000 Nobel Prize in economics
• Profile of Karl Jöreskog on the website of SSI company
• Karl Gustav Jöreskog at the Mathematics Genealogy Project