title: A COMPARISON OF THE PREDICTIVE ACCURACY OF A POOLING AND A SUBGROUPING PREDICTION STRATEGY.
abstract: The subgrouping strategy has been employed in a number of studies (Fredriksen & Gilbert, 1960; Fredriksen & Melville, 1964; Ghiselli, 1956; Klein, Rock & Evans, 1968; Rock, Evans & Klein, 1969; Malnig, 1969). In each of these studies it was shown that after partitioning a sample into g subgroups and performing a separate regression analysis within each group, one could identify one or more subgroups having a larger multiple correlation than the total sample regression. An important question is whether this type of result will be maintained under cross validation.
authors.forename: A L
authors.initials: AL
authors.lastname: Gross