Mam Maya (ISO 639-3: mvc) The Mam data presented in this archive were originally collected as part of Clifton Pye’s project Documenting Mayan Language Acquisition, 2005-2009. The research was supported by grants from the National Science Foundation (BCS 0515120 and BCS-0613120) and from the General Research Fund of the University of Kansas (GRF-2301063). All articles that reference the Mam data from this archive should cite the following articles: Pye, C., Pedro Mateo, Bárbara Pfeiler, Ana López, Pedro Gutiérrez and Donald Stengel. 2006. Adquisición de la Fonología en Cinco Idiomas Mayas. IX Encuentro Internacional de Lingüística en el Noroeste, Hermosillo, Mexico. November 16, 2006. Pye C., Pfeiler, B., de León, L., Brown, P. & Mateo, P. 2007. Roots or edges?: A comparative study of Mayan children’s early verb forms. In Barbara Pfeiler (ed.), Learning indigenous languages: Child language acquisition in Mesoamerica and in Basque, pp. 15-46. Hannover: Verlag für Ethnologie, Colección