1. Department of Special Needs Education; University of Oslo; Oslo Norway
2. Department of Early Childhood Education; Oslo Metropolitan University; Oslo Norway
3. Department of Language, Literature, Mathematics and Interpreting; Western Norway University of Applied Sciences; Sogndal Norway
4. Department of Speech and Language Disorders; Statped; Oslo Norway
5. Department of Pedagogy, Religion and Social Studies; Western Norway University of Applied Sciences; Bergen Norway
6. Department of Applied Psychology and Human Development; University of Toronto; Toronto Canada
7. Division of Psychology & Language Sciences; University College London; London UK