In a study to learn whether or not poor nutrition, as indicated by low hemoglobin levels, affects intelligence and behavior, 113 Head Start children in Missoula, Montana took part. Group testing with the Lorge Thorndike Intelligence Test and individual testing with the Wechsler and Primary Scale of Intelligence or Wechsler Intelligence Scale for Children provided IQ information. An experimental group of the Head Start children was given iron tablets daily at school, and a control group was given placebos. Blood tests were taken at intervals in the school year, and teachers rated the behavior of all the children. Results of data analysis indicated that the iron pills did not significantly affect homeglobin levels. However, for those with low hemoglobin levels, increases in the levels were associated with increases in intelligence scores. "A Study of Food and Poverty" (PS 001 721), by the same author, is a longer report on the same subject. (MS)