Introduction : Motives, meanings, and contexts -- Spirit and science : faith, healing, and mission -- "A little child shall lead them" : educational evangelism and child study -- "Psychological work among the feeble-minded" : the medical meaning of "mental deficiency" -- Psychological work in the schools : the statistical meaning of "subnormality" -- Causes and consequences : the Kallikak family as eugenic parable -- The biology and sociology of "prevention" : defectives, dependents, and delinquents" -- Psychological work and the state : reformers, professionals, and the public --Psychological work and the nation : the political meaning of intelligence -- Leaving Vineland : popularity, notoriety, and a place in history -- Epilogue : Psychological legacies, historical lessons, and luck.