Data used by Arnold (1982) to demonstrate the need for separate data analytic methods to assess form of relationship and degree of relationship differences were shown to have such problems as nonhomogeneous variance and heteroscedasticity, making them unsuitable for analysis with moderated regression. After applying variance-stabilizing transformations, we analyzed the same data by using moderated regression. Results of these analyses showed that the results reported by ' Arnold (1982) do not serve as a viable basis for perpetuating the practice of assessing degree of relationship differences with the subgrouping method. Moreover, the moderated regression strategy is capable of detecting not only form of relationship differences but also degree of relationship differences. Implications of these findings are discussed. In addition, a number of other issues surrounding the detection and description of moderating effects are considered.

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