Latvian CDI: methodology, developmental trends and cross-linguistic comparison
Journal article by Olga Urek, Anna Vulāne, Roberts Darģis, Agrita Tauriņa, Tija Zīriņa & Hanne Gram Simonsen in Journal of Baltic Studies, published online March 2019.
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 main developmental trends of the lexical development of Latvian children, and compares these trends to analogous data from American English, Norwegian, and Russian.