**Conference deadline extended to 22nd January 2020, 12 midnight GMT.**

A conference is planned for July 1-3, 2020 at the University of York, to mark the retirement of Professor Marilyn Vihman later that summer. Professor Vihman’s work on the relationship between perception and production has changed our understanding of how children build early phonological representations, and her publications on phonological, lexical and morphological development have become essential reading for child language scholars around the world. We invite abstract submissions by January 22, 2020 for either talks or posters relating to the following themes:

• Early phonological, lexical or morphological development 
• Interaction between production and perception
• Emergent systematicity

Contributions relating to these topics based on experimental and/or observational studies with infants or toddlers or on modelling approaches are equally welcome.

Abstracts should not exceed 500 words (exclusive of references, tables or figures); submitters should include their preference for talk or poster. We expect to be able to respond to all submissions with a decision by March 1 2020. For more information, please see the conference website at https://sites.google.com/york.ac.uk/buildinglinguisticsystemsyork.