Comments on an article by J. J. Arnett regarding the assertion that American psychology focuses too narrowly on Americans while neglecting the other 95% of the world's population. The authors challenge Arnett's methodology in his research and question the ways in which he drew his conclusions. They claim that a major weakness of Arnett's argumentation is that he failed to distinguish between research that tests general laws of behavior and research aimed at describing the impact of societal factors on behavior.