This article extends Lemieux’s concern for the interdisciplinary tension between philosophy and sociology to the intradisciplinary tension within psychology between approaches to the study of children focusing on universal principles and approaches adopting a contextual lens. This tension arises both in how development is defined and in the methods chosen for its study. This tension is exemplified in terms of the recent American preoccupation with the Word Gap (WG), a supposed difference of 30 million words heard by socioeconomically diverse children (...) by the age of 4 that is blamed for educational disparities throughout the school years. The article discusses the political implications of WG discourse as it gives rise to the erasure of language practices of diverse Americans and obscures the role that the educational system plays in fostering a ‘one-size-fits-all’ instructional model. The article concludes with a discussion of attempts to combat the deficit model that the WG discourse reproduces. (shrink)