- Phonetics and phonology, segmental and suprasegmental (Spanish, French, Catalan, Romansh)
- Syntax, synchronic and diachronic (information structure, clitics, postverbal subjects)
- Second language acquisition (particularly L3 acquisition, acquisition of phonology and syntax)
- Multilingualism (societal and individual, language dominance, languages of origin)
- Variety linguistics and dialectology
- Linguae Minores (Judeo-Spanish, Grisons Romansh, Friulian, Occitan)
- Slavic languages (Ukrainian, Bulgarian) and Nordic languages (Swedish, Danish), Modern and Ancient Greek
