My research is focused on investigating the nature of generalizations in natural language and how they are formed in acquisition given the cognitive and linguistic resources available to the child learner at each stage in development. I also study the conditions under which linguistic patterns may either emerge or disappear over time. More generally, I am interested in how the processes of acquisition and change may shed light on the nature of the language faculty. Hitherto, my primary empirical domain has been morphosyntax in Icelandic. However, more recent projects include modelling syntactic change in Early Modern English and studying how children learn diverse typological patterns in morphosyntax using Artifical Language Learning studies.