Abstract
One of the most common procedures in school effects studies is multivariate regression analysis employed in conjunction with an input-output model. In the usual, two-step regression method, student input is controlled by first computing from the input variables an expected output for each school. The difference between the observed and the expected output is then used as the dependent variable, and the school environment variables as the independent variabls, to determine the influence of the school environment. A heuristically superior alternative to the two-step method is the procedure recommended by McNemar (1962, p. 176) in which both student input and college environment variables enter into a single regression equation. The various components of the predictable variance then can be calculated from equation (i) n n-I n
Published Version
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