OBTAINED TIME JUDGMENTS OF 1-10 SEC. BY THE METHODS OF ESTIMATION, PRODUCTION, AND REPRODUCTION FROM 20 NORMAL AND 54 SCHIZOPHRENIC SS. THE LATTER WERE CLASSIFIED INTO 2 GROUPS, DEPENDING UPON WHETHER RESPONSES MET A CRITERION FOR SIGNIFICANCE OF REGRESSION UPON THE GIVEN TIME VALUES. SLOPES OF THE REPONSE * TIME FUNCTIONS FOR SS EXHIBITING SIGNFICANT REGRESSIONS CONFORMED TO EXPECTATIONS OF CONSISTENCY AMONG THE METHODS BASED UPON AN INTERNAL-CLOCK ANALOGY. MEAN RESPONSES FOR SS FAILING TO MEET THE CRITERION FOR SIGNIFICANCE OF REGRESSION WERE HIGHLY RELIABLE AND HIGHLY CORRELATED WITH THE INTERCEPTS OF THE FUNCTIONS, INDICATING THAT LEVEL OF RESPONSE IS NOT NECESSARILY A VALID MEASURE OF TIME JUDGMENT. (PsycINFO Database Record (c) 2006 APA, all rights reserved)