Prof. dr. F. Wijnen was principal investigator in various projects that involved collecting children’s language and speech data, and was co-constructor of child language transcript corpora that are now available through CHILDES/TALKBANK (Groningen corpus, Utrecht corpus, Wijnen corpus). He supervised an NWO-funded research programme on early language development in children at familial risk of dyslexia, in which two cohorts of children were studied longitudinally and (thus) a large and varied dataset was collected. He has published on (a.o.) language development and language processing in individuals with (a risk of) dyslexia.