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 1974 he was elected as a Fellow of the American Statistical Association. In 2007 Jöreskog received the Award for distinguished scientific applications of psychology from the American Psychological Association (APA). In 2004 he was awarded The Rudbeck Medal by Uppsala University. 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. Jöreskog, K. G., Olsson, Ulf H., & Wallentin, Fan Y. (2016). Multivariate Analysis with LISREL. Springer International Publishing AG. . 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 Notes 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 1935 births Living people Members of the Royal