As a postdoc at UPenn, he studied Kannada, finding that despite its causative morpheme, two-year-olds acquiring Kannada rely on number of overt NPs when making judgements about novel word meanings.
[3][4] Much of Lidz's research focuses on the syntactic details of child language acquisition.
His findings show evidence of significant syntactic development in 18-month-olds, including understandings of long-range dependency and parts of speech.
[5] Articles by Lidz arguing for the necessity of Chomsky's theory of Universal Grammar have appeared in Scientific American[6] and The Conversation.
[7] Lidz was the editor-in-chief for Language Acquisition from 2013 to 2020[8] and edited/co-authored the Oxford Handbook of Developmental Linguistics.