Maitreyi Mazumdar of Boston Children's Hospital in the U.S. will use existing data from epidemiology studies in Bangladesh, Mexico City, and Oklahoma to develop a scoring system to identify children at high risk of developing cognitive impairments also beyond childhood. The data were derived from prospective studies of individuals across the prenatal, early childhood and adolescent time periods, and include anthropomorphic measurements, full scale IQ, and other clinical and nutritional data.