The primary goal of this symposium is to foster greater collaboration between theoretical research on language processing and research on impairments of spoken language processing. Such collaboration has great potential to be mutually beneficial for researchers on both sides. The study of language delays and deficits provides a rich source of data on language processing, thus providing novel constraints on proposed theories of language processing. Indeed, the study of language impairments has been critical to the development of theories of reading, semantic processing, grammatical processing, and other domains. However, there has been comparatively little cross-talk between research on impairments of spoken language and theories of spoken language processing. This symposium aims to close this gap by bringing a diverse set of experts on impairments of spoken language processing to the Cognitive Science Society audience, which has been a strong source of development of theories of spoken language processing.