1. Department of Psychology University of Cambridge Cambridge UK
2. Centre for Brain and Cognitive Development, Birkbeck University of London London UK
3. SAMRC/Wits Developmental Pathways for Health Research Unit, School of Clinical Medicine, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
4. Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine Keneba The Gambia
5. Department of Women and Children's Health King's College London London UK
6. Early Start and School of Education University of Wollongong Wollongong New South Wales Australia
7. Department of Cognitive Science Carleton University Ottawa Canada
8. Department of Medical Physics and Biomedical Engineering University College London London UK
9. Department of Experimental Psychology University of Oxford Oxford UK