Theo Peeters holds a License in Philosophy and Literature (University of Louvain), M.A. in Neurolinguistics (University of Brussels), MSc in Human Communications (University of London) and is affiliated to TEACCH, University of North Carolina at Chapel Hill.
Language attrition in general is concerned with what is lost (linguistic focus), how it is lost (psycholinguistic and neurolinguistic focus) and why it is lost (sociolinguistic, sociologistic and anthropologistic focus) (Hansen 1999).