Latvian CDI: Methodology, developmental trends and cross-linguistic comparison

This is an Accepted Manuscript of an article published by Taylor & Francis in the Journal of Baltci Studies on 21 March 2019, available online: https://www.tandfonline.com/doi/full/10.1080/01629778.2019.1590433. In this article, we report the results of a large-scale population study based on the Latvian adaptation of Communicative Development Inventories (CDI) – a parental report tool aimed at mapping the lexical and grammatical development of children under the age of three. Two CDI forms are discussed: CDI I: ‘Words and Gestures’ (8–16 months), and CDI II: ‘Words and Sentences’ (17–36 months). This article discusses the Internet-based methodology used for the data collection, reports the…