The testing of contemporary sociological theory often calls for the application of structural-equation models to data which are inherently collinear. It is shown that simple ridge regression, which is commonly used for controlling the instability of ordinary least squares regression estimates in ill-conditioned data sets, is not a legitimate…

The third of a five-volume series, this volume consists of two empirical studies of organization development (OD) in school systems. Part 1 reports on information gathered from over 300 OD consultants in the United States and Canada regarding job title, work base, sex, geographical region, type of training, and nature and extent of OD work in…

This paper is an extended series of appendices to the report "Exploring the T.R.Q.: An Assessment of the Effectiveness of the Teachers' Rating Questionnaire," Report Number 123. It should be most useful to those familiar with multiple regression analysis and factor analysis and wishing a more complex record of the statistical procedures…