By studying forgetfulness in humans and monkeys, scientists are learning about the anatomy of normal memory. Results of amnesia studies, indicating that memory collapse occurs in a selective fashion depending on the cause, may help resolve a fundamental dispute among learning theorists. (JN)

Reviews recent studies that examined blood-lead levels and childhood learning problems. Study findings involving Edinburgh school children suggest that body burdens of lead can diminish the cognitive ability and learning skills of children and that asymptomatic levels of lead can be neurotoxic. (ML)