title: A simple test of the Law of Initial Values.
abstract: The conceptualization and testing of the Law of Initial Values remains a controversial issue. We critically review common procedures to test the Law, and a simple test of the Law is described and illustrated. The reduction of variance from the pretest to the posttest is crucial in this test.
authors.affiliation: Rheumatology Department, University Hospital, Utrecht, The Netherlands.
authors.forename: R
authors.initials: R
authors.lastname: Geenen
authors.forename: F J
authors.initials: FJ
authors.lastname: van de Vijver
mesh_terms: D006339:Heart Rate / Q000502:physiology; D006801:Humans; D011603:Psychophysiology / Q000706:statistics & numerical data*; D012044:Regression Analysis