The two columns in Table 2 focus on the linear and nonlinear relationships between test scores and the organizational environment measures while controlling for other factors likely to affect performance. The first column shows that there are linear relationships between five out of the six environmental measures and performance. However, there is not evidence of a nonlinear relationship with performance for any of the objective or subjective variables; for this to be the case, both the linear and quadratic term would need to be statistically significant. To explore the possibility that nonlinearity in the environment-performance followed some form of s-shaped pattern rather than an inverted u-shaped one, cubic terms were added to the regression equation. However, neither the quadratic nor cubic terms in this respecified model were statistically significant, nor did their inclusion within the regression equation make any difference to the explanatory power of the model. Thus, there is no support for the arguments of organization theorists who suggest that the environment-performance relationship is a nonlinear one—at least on the basis of this sample of organizations, during this time period. Nevertheless, the results offer strong support for a straightforward linear relationship between organizational environments and performance.