title: Continuous orthogonal complement functions and distribution-free goodness of fit tests in moment structure analysis.
abstract: It is shown that for any full column rank matrix X 0 with more rows than columns there is a neighborhood [Formula: see text] of X 0 and a continuous function f on [Formula: see text] such that f(X) is an orthogonal complement of X for all X in [Formula: see text]. This is used to derive a distribution free goodness of fit test for covariance structure analysis. This test was proposed some time ago and is extensively used. Unfortunately, there is an error in the proof that the proposed test statistic has an asymptotic χ (2) distribution. This is a potentially serious problem, without a proof the test statistic may not, in fact, be asymptoticly χ (2). The proof, however, is easily fixed using a continuous orthogonal complement function. Similar problems arise in other applications where orthogonal complements are used. These can also be resolved by using continuous orthogonal complement functions.
authors.affiliation: University of California, Los Angeles, 3400 Purdue Ave., Los Angeles, CA, USA, rij@stat.ucla.edu.
authors.forename: Robert
authors.initials: R
authors.lastname: Jennrich
authors.forename: Albert
authors.initials: A
authors.lastname: Satorra
mesh_terms: D000465:Algorithms; D015233:Models, Statistical; D012044:Regression Analysis; D013223:Statistics as Topic
references.citation: Br J Math Stat Psychol. 1984 May;37 ( Pt 1):62-83
references.pmid: 6733054