Like every other aspect of human development, language development is characterized by variation. Historically this variation has been largely ignored by students of child language, who have concentrated on the remarkable similarities in sequence of development that are usually observed across children acquiring a given language. Individual differences in rate of development and individual differences in learning style have been left to applied practitioners such as speech pathologists and special educators. We believe it is no accident that these professionals, concerned with such important questions as the definition of abnormality, the relationship of language to nonverbal cognition, and the role of environmental variables, have found it essential to focus on variation.
Stored only when both papers are in the corpus — 366 citations exist upstream.
Imported from OpenAlex (CC0) — nothing here is generated.