A variety of re-sampling methods have been developed to test the significance of regression coefficients in multiple regression (Levin & Robins, 1983; Freedman & Lane, 1983; Oja, 1987; Kennedy & Cade, 1996; ter Braak, 1992 and Manly, 1997). Some studies have compared the performance of some permutation methods when collinearity is present, when different sample sizes are used, when errors are n...