- “A planificación ortográfica: algúns apuntamentos metodolóxicos para o caso galego”. I International Seminar on Language Planning. Council for Galician Culture, Santiago 1991.
- “Datos sobre o Mapa Sociolingüístico de Galicia”. Simposi de Demolingüística. Institut de Sociolingüística Catalana of Generalitat de Catalunya. Tortosa 1993.
- “A situación da lingua galega na comarca de Ferrol”. Galician Language Colloquium. CEFOCOP – Galician Government (Education Department). Ferrol 1993. [Invited]
- “Purismo e planificación léxica na lingua galega”. Colloquium for Language Planning in Galicia (participation at the round table “Lexical Standardization”). Council for Galician Culture. Santiago 1993.
- Symposium “Lingua e medios”. Presider of the round table “The linguistic model for mass–media”. Center for Studies “Lingua e Empresa”. Santiago 1993. [Invited]
- “As actitudes ante a comunicación publicitaria en lingua galega”. Paper at the I Symposium “Vender en Galicia, vender en galego”. Centro de Estudos ‘Lingua e Empresa’ & Association of Young Contractors. Ferrol 1993. [Invited]
- “The sociolinguistic Map of Galicia”. Colloquium on Minority-Language Population-Censures and Speech-Community Surveys. Compass, European Boureau for Lesser-Used Languages & University of Hertfordshire. Hertfordshire, UK, 1993 (co-authored).
- “Estudio demolingüístico da competencia en galego: unha perspectiva sincrónica”. I Congrès de Lingüística General. Universitat de València. Valencia, 1994.
- “Towards an Integrated Typology of Linguistic Competence in the Spain’s Languages. The Galician case”. 5th International Conference on Language and Social Psychology. University of Queensland. Brisbane, Australia, 1994.
- “Lingua habitual e opción política en Galicia”. IV Conference of the International Association of Galician Studies. University of Oxford. Oxford, 1994.
- “A situación sociolingüística de Galicia”. IV Conference of the International Association of Galician Studies. University of Oxford. Oxford, 1994 (co-authored).
- “The importance of Demolinguistic Studies in Minoritized Languages for Language Planning in the European Community. A Galician Perspective”. II International Colloquium Languages in the European Community. University Ramon Llull & University of Amsterdam. Barcelona 1994.
- “Aproximación ó Mapa Sociolingüístico de Galicia: a súa contribución ó proceso de normalización lingüística no ensino”. Colloquium for coordinators and members of Language Planning Teams. Galician Government (Department of Education). Pontevedra 1995. [Invited]
- “El estatus del gallego: presente y futuro”. XII Conference of the International Conference of Hispanists. University of Birmingham. Birmingham (UK), August 1995. [Invited]
- “Historia e actualidade da sociolingüística galega: das actitudes do profesorado ó MSG”. I International Conference “A lingua galega: historia e actualidade”. Instituto da Lingua Galega-University of Santiago de Compostela, Santiago 1996.
- “Mantemento e recuperación lingüística na escola: unha visión desde o Mapa Sociolingüístico de Galicia”. VIII Colloquium of Galician Language and Literature. Asociación Socio–Pedagóxica Galega–CIG. Santiago 1998. [Invited]
- “O galego na publicidade dos medios impresos”. Symposium “Galician Language in advertising creativity”. University of Vigo-School of Social Sciences. Pontevedra 1998. [Invited]
- “Interpretación da situación sociolingüística galega” Course The Sociolinguistic Situation of Galicia. Association of Language Planning Technicians. Santiago de Compostela 1998. [Invited]
- “Obxectivos de normalización desde as institucións”. I Colloquium of Galician Sociolinguistics. MEU – University of Santiago de Compostela. Santiago 1998. [Invited]
- “Current Situation of the Galician Language”, in Language Planning Workshop. University College of Cork (Ireland). February 25, 2000. [Invited]
- “A sociolingüística galega 1967–1977: unha aproximación historiográfica”. VI International Conference of the International Association of Galician Studies. Havana, Cuba, April 18, 2000.
- “Language in the EU: the Galician Case”. Paper at University of California at Santa Barbara (UCSB), Department of Spanish and Portuguese. April 24, 2000. [Invited]
- “Galician Sociolinguistics in the Hispanic Context: A Historiographical Approach (1967–1997)”. Paper at UCSB. April 27, 2000. [Invited]
- “Emotion and Galician Poetry”. Lecture given at UCSB. April 26, 2000. [Invited]
- “A traducción castelán–galego”, in Symposium A traducción no eido institucional. University of Vigo, May 24, 2000. [Invited]
- “An Overview of Galician Sociolinguistics (1967-1967)”. International Symposium Galicia: a Language, a People. The University of Birmingham, September 28, 2001.
- “Galician Sociolinguistics in a Hispanic context: An Overview”. Hispanic Research Seminars. University College, Cork, Ireland. December 7, 2001. [Invited]
- “Sociology of Language and Pragmatics in Contemporary Galician Sociolinguistics: Complementarity or Rivalry”. First Workshop on Spanish Sociolinguistics. State University of New York, Albany. March 14-15, 2002.
- “The Dialogue between Sociology of Language and Pragmatics in Contemporary Galician Sociolinguistics”. First UK Symposium on Hispanic Linguistics. University of Surrey-Guildford, April 14-16, 2002.
- “Galician Sociolinguists in the Hispanic Linguistic Tradition: an Overview”. Graduate Seminar in Spanish Studies. University of Oxford (UK). Faculty of Medieval and Modern Languages, Taylor Institution. February 18, 2003. [Invited]
- “A sociolingüística galega no contexto hispánico: conexións e influencias”. VII Congreso Internacional de Estudios Galegos. Asociación Internacional de Estudios Galegos, Barcelona. May 28-31, 2003.
- “Language Maintenance and Shift in Galician Urban Families”. 8th Forum for Iberian Studies: Bilingualism in the Iberian Peninsula. University of Oxford, June 7, 2003.
- “A lingua galega no medio urbano: unha visión desde a macrosociolingüística”. VII Encontros para a Normalización Lingüística. Consello da Cultura Galega. Santiago de Compostela, October 23-24, 2003. [Invited]
- “Monolingüismo vs. bilingüismo no ensaio sociolingüístico galego: poder simbólico, mitoloxía ou realidade?”. International Symposium of Galician Studies. University of Birmingham (UK). March 2004. [Invited]
- “O ensaio sociolingüístico en Galicia na 2ª metade do século XX: orixes, polémicas e coordenadas”. Xornadas Mar por Medio. Concello de Ribadeo. August 2004. [Invited]
- “Social Response, Galician Style? The Aftermath of the ‘Prestige’ Disaster”. University of California-Santa Barbara, IHC. November 23, 2004. [Invited]
- “The Galician language: Current Sociolinguistic Situation”. Lecture given at University of California-Santa Barbara, Department of Spanish and Portuguese. November 23, 2004. [Invited]
- “Galician Sociolinguistics in the Luso-Hispanic Tradition in the Late 20th Century”. UWM Colloquium in Language, Literature and Linguistics. University of Wisconsin – Milwaukee, May 5, 2005.
- “Iberia airlines? Os estudos galegos nas tradicións ibérica e luso-hispánica dos países anglófonos”. X Forum for Iberian Studies. Trinity College, Oxford. June 3-4, 2005.
- “Sociolingüística gallega y sociolingüística luso-hispánica: conexiones e influencias”. XIV Congreso Internacional de la Asociación de Lingüística y Filología de América Latina’. Monterrey, Mexico, October 17-21, 2005.
- “Entre Galicia y Nuevo León, mar por medio: hacia una historia de la sociolingüística (luso)hispánica”. Universidad Autónoma de Nuevo León, Mexico. March 23, 2006. [Invited]
- “O purismo lingüístico, unha doenza superable?”, in Simposium ‘Ideoloxías e diversidade lingüística’. Fundación Carlos Casares. Vigo, June 21, 2006. [Invited]
- “Perspectivas dos estudos galegos mar por medio: os Estados Unidos e as Illas Británicas”. VIII Internacional Conference of Galician Studies. Salvador de Bahia (Brazil), September 12, 2006.
- “Teaching History of the Spanish language at UWM”. Roundtable “Teaching the History of the Spanish Language”: 42nd International Congress on Medieval Studies. Kalamazoo, Michigan, May 11, 2007.
- “The future of the Galician Language”. Facultade de Filoloxía e Tradución. University of Vigo, Spain. June 28, 2007. [Invited]
- “Language shift and language planning in urban Galicia”. Symposium “Sociology of Language and Language Planning in Galicia”. Graduate Center, CUNY (PhD program in Luso-Hispanic Literature and Linguistics). New York, November 2, 2007. [Invited]
- “Studying Spanish Today”. Presentation for the Sigma Delta Pi Initiation Ceremony. University of Wisconsin-Milwaukee, November 30, 2007.
- “On the history of Sociolinguistics in Brazil and Mexico”, in UWM Colloquium in Language, Literature and Linguistics. University of Wisconsin – Milwaukee, May 1, 2008.
- “Cara a unha historia da sociolingüística en América Latina: algúns apuntamentos sobre o Brasil e México”. XV Congreso Internacional de la Asociación de Lingüística y Filología de América Latina (ALFAL). Montevideo, August 18-21 2008.
- Response to Anxo Lorenzo’s paper “A sociolingüística de Galicia”, at the Foro de Debate “Sociedades Plurilingües: da identidade á diversidade”. Consello da Cultura Galega, Santiago de Compostela. June 20, 2008. [Invited]
- “Multilingualism in Contemporary Spain: Fact or Fiction”. Celebrating 30 years of Multilingual and Multicultural Spain. College of Charleston, South Carolina. October 10, 2008. [Invited]
- “Bilingualism and Language Shift in Urban Galicia”. UIC Bilingualism Forum 2009, University of Illinois-Chicago, May 1, 2009 [keynote speaker].
- “Libertad sin ira? Política y políticas lingüísticas en la Galicia actual”. In Constitutional Spain II, Democracy and Culture, 1978-2010. Symposium at the University of California, Santa Barbara. February 12, 2010 [invited].
- “Anger and Language Choice in Galician-Spanish Bilingual Family Interactions”. Kentucky Foreign Language Conference. Lexington, KY. April 15, 2010.
- “O prestixio social da lingua galega” in Foro Mugardos Lingua e Sociedade. Fundación Casares & Concello de Mugardos. Mugardos (Galicia, Spain), October 8, 2010.
- “Purismo e ideoloxías lingüísticas no contexto galego: apuntamentos preliminares para un estudo necesario”, in Simposio Contacto de linguas, hibrididade, cambio: contextos, procesos e consecuencias. Facultade de Filoloxía-University of Santiago de Compostela, November 2, 2010.
- “Language Discourses in Contemporary Galicia: Political Use and Manipulation of ‘Libertad sin ira’ in Spanish Perspective”, in Language Ideologies, Policies, and Discourse in Contemporary Galicia: A Cross-Dimensional Analysis, MLA Annual Conference 2011, Session 761 (Special Session), January 9, 2011.
- “Language Discourses in Contemporary Galicia: Political Use and Manipulation of ‘Libertad sin ira’ in Spanish Perspective”. Paper at University of California-Santa Barbara (Department of Spanish & Portuguese). January 11, 2011.
- “La investigación sobre el multilingüismo en España: objetivos y metodología de estudios macrosociolingüísticos y censos lingüísticos”. 66th Kentucky Foreign Language Conference, Lexington KY, April 19, 2013.
- “O pobo é quen máis ordena?: Ideologías puristas y control de la lengua estándar en el gallego actual”. Special Session «Language Purism, Contact, Hybridity, and Literacy in Hispanic Societies» at the 55th Midwest Modern Language Conference. Milwaukee, November 7-10 2013.
- “O povo é quem mais ordena? Ideologies, control, and language purism in the configuration of Contemporary Standard Galician”. Portuguese Linguistics in the United States, University of Georgia, Athens, November 14-16 2013: http://portugueselinguistics.wordpress.com.
- “Language Standardization, Purism, and Ideologies: a Historiographical Approach to Galician Grammar and Lexicography in the 19th Century” (written in collaboration with Ernesto González-Seoane). 7th Workshop on Spanish Sociolinguistics. UW-Madison, April 3-5, 2014.
- “Purism, Authority and Language Control in Luso-Hispanic Languages: Metalanguage and Discourse on Castilian-related Features in Contemporary Galician Linguistics”. Conference of the Association of Hispanists of Great Britain and Ireland. National University of Ireland, Galway. April 14-16, 2014.
- “O povo é quem mais ordena? Presence and Misrepresentation of Zeca’s Imaginary in Contemporary Galician Linguistics”. Portugal and the World: on the 40th Anniversary of the Carnation Revolution. UWM-Portuguese Program. April 23, 2014.
- “Galician Studies at and from UW-Milwaukee”. Presente e Futuro dos Estudos Galegos nos EE.UU. (roundtable “A coordinación entre CEG e investigadores”). City University of New York, Graduate Center. April 26, 2014. [Invited]
- “En galego estamos no mundo: facendo acorda-la lingua de Galicia na escola” [In Galician we’re in the World: Helping the Awakening of Galicia’s Language at School”]. Roundtable ‘The Future of the Galician Language is at School’, organized by Galiza co galego/Avoaescola. Ferrol, Galicia, Spain, June 13, 2014. [Invited].
- Towards a History of the Real Academia Galega: Contemporary Research on Galician Sociolinguistics and Lexicography”. 13th International Conference on the History of Language Sciences, University of Trás-os-Montes & Alto Douro, Vila Real, Portugal, August 25-29, 2014.
- “On the Current Situation of Luso-Hispanic Linguistics in the United States: the Case of Sociolinguistics”. 3rd Symposium on Luso-Hispanic Linguistics (III SLHL), University of Wisconsin, Madison, November 7-8 2014. Keynote Lecture [Invited]
- “A sociolingüística hispánica nos EEUU: unha historia preliminar” [Hispanic Sociolinguistics in the US: a Preliminary History]. Lecture at the Instituto da Lingua Galega, University of Santiago de Compostela. November 25, 2014. [Invited]
- “Os estudos galegos na Modern Language Association” [Galician Studies at the Modern Language Association]. Seminario Internacional Estudos Galegos/ Estudos Ibéricos alén das fronteiras [International Symposium Galician Studies/ Iberian Studies beyond the borders]. Council for Galician Culture, Santiago de Compostela, December 17-19 2014. Via skype. [Invited]
- “O optimismo é revolucionario. Novos horizontes para os estudos galegos nun mundo globalizado”. XI Conference of the International Association of Galician Studies. Buenos Aires, April 6-8, 2015 [invited].
- “Ira e elección de lingua nas interaccións familiares bilingües galego-castelán en Galicia”. XI Conference of the International Association of Galician Studies. Buenos Aires, April 6-8, 2015.
- “The Modern Language Association and Galician Studies in North America”. Symposium Galician Studies North America: Creating Community, Bridging Gaps. UW-Milwaukee, April 24, 2015.
- Response to “Translation, Bilingualism, Glocalization: New Linguistic Approaches in Galician Studies”. MLA Annual Convention. Austin, TX, January 6-9 2016.
- “A lingua e a lingüística galegas nos Estados Unidos: algunhas consideracións historiográficas e epistemolóxicas”, II North American Symposium of Galician Studies, University of Michigan-Ann Arbor, April 20-23, 2016.
- “Spanish in the United States”. Presentation at the Indira Gandhi National Open University, School of Foreign Languages. Delhi, October 13, 2016 [invited].
- “Spanish Language around the World: Social History”. Presentation at the Indira Gandhi National Open University, School of Foreign Languages. Delhi, October 13, 2016 [invited].
- “Language Endangerment and Language Revitalization in a minority (post)colonial setting: the Galician case”. 20th Conference of the Foundation for Endangered Languages. University of Hyderabad, India. December 10, 2016.
- “What is Galician in Galician Studies”, as part of a roundtable with the same name at the Annual MLA Conference. Philadelphia, January 2017.
- “A Response to Language Maintenance and Change in Languages in Contact”, The Standardization of Galician, roundtable at the 2017 Annual MLA Conference. Philadelphia, January 2017.
- “Hacia una historia de la Real Academia Galega: un análisis historiográfico de la investigación sociolingüística y lexicográfica de la RAG (1982-2012)”, in Kentucky Foreign Language Conference (Hispanic Linguistics Section), April 20-22, 2017.
- “Purismo, lusismo e autonomismo na lingüística galega contemporánea: unha aproximación historiográfica”, in 4th International Conference of Historical Linguistics (CILH 4), University of Lisbon, July 17-21, 2017.
- “Teaching Academic Content in Hispanic Linguistics in the United States”. North East Modern Language Association Annual Conference. Pittsburgh, April 2018.
- “La enseñanza de la lingüística hispánica en Estados Unidos: retos y oportunidades”. 4th International Colloquium on Languages, Cultures, Identity in Schools and Society. Soria, Spain, July 4-6 2018.
- “Galician Culture: Bridging Tradition and Modernity”. Lecture in South Dakota State University (Brookings), South Dakota State University. September 4, 2018. [Invited].
- “Galician language in the Iberian Peninsula”. Presentation in Western Oregon University. Monmouth OR, October 10, 2018. [Invited]
- “Language Contact and Language Standardization: the Galician Case”. University of Colorado at Boulder. October 16, 2018. [Invited]
- “Cara a unha socioloxía do coñecemento dos estudos galegos en Norteamérica: unha análise desde o inquérito MLA Galician 2014”. 3rd North American Symposium of Galician Studies. Denver, October 19, 2018.
- “Epistemoloxía da lingüística galega: unha ollada desde USA” [Epistemology of Galician Linguistics: a view from Galicia]. 3rd North American Symposium of Galician Studies. Denver, October 19, 2018.
- “Galician Language and Culture in the United States”. Lecture in Middlebury College. Middlebury VT, October 30, 2018 [invited].
- “Galician language in Spain”. Presented at the University of California-Irvine. November 14, 2018 [Invited]
- “Top-Down and Bottom-Up Language Policies in Galicia: Can School Alone Reverse Language Shift?” 2019 MLA Annual Conference, Chicago January 6, 2019.
- Language Maintenance and Shift in Urban Spaces in Contemporary Galicia. Presented in Urban Spaces, Creative Places: A Blueprint for the Humanities in the City. Organized by the Center for the Advancement of the Humanities, Marquette University, February 14, 2019.
- “Estandarización do galego e purismo” [Standardization of Galician and Purism]. Symposium Estándar, norma e variación: procesos, problemas e perspectivas. Instituto da Lingua Galega, Univesity of Santiago de Compostela, February 22, 2021 [invited].
- “Textos introductorios a la lingüística hispánica en Norteamérica ayer y hoy”. Kentucky Foreign Language Conference, University of Kentucky, Lexington, April 23, 2022.
- “Los manuales introductorios de lingüística hispánica en Norteamérica: diseño curricular, teoría, pedagogía”. Hispanic Linguistics Symposium, Arizona State University, November 4, 2022, online.
- “Galician Studies in the US with a Cuban influence.” Presentation at the Symposium From Havana to New York: the Footprints of Galicianness, Florida International University, Miami, June 8 2023 [invited].
- “Os lingüistas como falantes: as ideoloxías sobre o contacto galego-castelán na normativa oficial e o reintegracionismo”, XV International Conference of General Linguistics, Universidad Complutense de Madrid, June 14-16 2023.
- “Goa through the Eyes of a Galician Linguist” Presentation (online) at the UWM Clube Lusófono, October 3, 2023
- “Viaxes sen Lee, unha síntese ciberliteraria galego-americana.” Presentation at the 4th North American Symposium of Galician Studies, Texas Tech U, Lubbock October 20, 2023
- “A avaliación do contacto lingüístico galego-castelán de arriba-abaixo e de abaixo-arriba: un contraste necesario”, Simposio ILG 2023: Contacto de linguas: identidades e ideoloxías lingüísticas. Santiago de Compostela, November 28-30 2023 (online).
- “De Mitteleuropa a Mittelamérica: escribindo en galego desde a cultura e paisaxe estadounidenses o proxecto Viaxes sen Lee”, XIV Conference of the International Association of Galician Studies. Universidade do Minho, Braga, April 18 2024 (online)
- “Contacto de lenguas y purismo lingüístico: el caso gallego”, Kentucky Foreign Language Conference, Lexington KY, April 18 2024 (online).
- “A posición académica dos estudos galegos: unha visión contrastiva norteamericana/galega”, XIV Conference of the International Association of Galician Studies. Universidade do Minho, Braga, April 19 2024 (online).
- “Viaxes sen Lee: una propuesta narrativa desde la autoficción viajera”. 34th International Conference of Hispanic Literature and Studies (CILH). Donostia, Spain, June 27, 2024.
- “La iniciación a la lingüística hispánica en Norteamérica: retos y oportunidades”. 34th International Conference of Hispanic Literature and Studies (CILH): Donostia, Spain, June 27, 2024.
- “Bilingualism and Bilingual Education in the United States”, Conference of the Wisconsin Association for Language Teachers. Appleton WI, November 2, 2024.
- “Travels without Lee: a Galician-English Translation in Motion”, Conference of the Pacific Ancient and Modern Language Association. Palm Springs CA, November 9, 2024.
- “Introducing Hispanic Linguistics in North America: Challenges and Opportunities”. Conference of the Pacific Ancient and Modern Language Association. Palm Springs CA, November 9, 2024.