Sambor Grucza is Professor at the University of Warsaw. His research interests are applied linguistics as well as linguistics of languages for specific purposes.Magdalena Olpińska-Szkiełko is Professor at the University of Warsaw. Her research interests include language acquisition, early bilingualism and specialist languages.Piotr Romanowski is Assistant Professor at the University of Warsaw. His research interests are bi- and multilingualism and the methodology of language teaching.

• Linguistic repertoire – Bilingual acquisition – Bilingual education – Bilingual kindergartens – Cross-linguistic influence – Heritage languages – Lexical richness – Adult-onset bilinguals – Bilingual parenting methods – Language socialization – Inhibitory control – Code-switching – Bilingual fiction – Bilingual instruction

Sambor Grucza is Professor at the University of Warsaw. His research interests are applied linguistics as well as linguistics of languages for specific purposes.Magdalena Olpińska-Szkiełko is Professor at the University of Warsaw. Her research interests include language acquisition, early bilingualism and specialist languages.Piotr Romanowski is Assistant Professor at the University of Warsaw. His research interests are bi- and multilingualism and the methodology of language teaching.

• Linguistic repertoire – Bilingual acquisition – Bilingual education – Bilingual kindergartens – Cross-linguistic influence – Heritage languages – Lexical richness – Adult-onset bilinguals – Bilingual parenting methods – Language socialization – Inhibitory control – Code-switching – Bilingual fiction – Bilingual instruction

Sambor Grucza is Professor at the University of Warsaw. His research interests are applied linguistics as well as linguistics of languages for specific purposes.Magdalena Olpińska-Szkiełko is Professor at the University of Warsaw. Her research interests include language acquisition, early bilingualism and specialist languages.Piotr Romanowski is Assistant Professor at the University of Warsaw. His research interests are bi- and multilingualism and the methodology of language teaching.

• Linguistic repertoire – Bilingual acquisition – Bilingual education – Bilingual kindergartens – Cross-linguistic influence – Heritage languages – Lexical richness – Adult-onset bilinguals – Bilingual parenting methods – Language socialization – Inhibitory control – Code-switching – Bilingual fiction – Bilingual instruction