Welcome to Cognitive Modeling and Computational Linguistics (CMCL) 2018, a workshop that provides a venue for work in computational psycholinguistics: computational and mathematical modeling of linguistic representation, development, and processing. We invite contributions that apply methods from computational linguistics to problems in the cognitive modeling of any and all natural language abilities. CMCL 2018 is co-located with the new Society for Computation in Linguistics at the 2018 Annual Meeting of the Linguistic Society of America in Salt Lake City.