Science: Electrical Breeding

Pre-natal influence was in the news last week. At Los Angeles City College, Psychologists Johnette Dispense and Richard T. Hornbeck injected small doses of electrical current in the uterus of female rats, then tested the maze-running intelligence of their offspring against that of undosed rats with the same fathers. Result: when a mother rat got a dose of one milliampere from the cathode (negative pole), the odds were 383-to-1 that her litter would be superior in intelligence; a dose of two milliamperes had the opposite effect—the litter was inferior (61-to-1). Doses from...