investigation of the acquisition of Dutch by deaf Dutch adults (late L1/early L2) and comparison to hearing Turkish and Moroccan-Arabic L2-learners of Dutch (late L2) on morphosyntactic aspects.

to compare the language and executive functioning profiles of children with ADHD to children with SLI and TD children.

investigation of the bilingual language and communication development of young deaf children in Sign Language of the Netherlands (SLN) and Dutch (D).

to explore early language development in children at FR of dyslexia; to compare developmental language profiles in FR children and children with SLI.

Aim: investigation of the expression of spatial relations by children with SLI and normally developing children in their spoken language production.