Planting Seeds

Adolescent Pot Users Show Lasting IQ Drop
September 26th, 2012 / Children / Betty Ford Institute
This study was conducted in the context of broader research on the health and behavior of all the babies born in Dunedin, New Zealand in 1972-73. The data on 1037 individuals from birth to 38 years offered a unique opportunity to investigate the neuropsychological effects of persistent cannabis use. Participants were assessed via diagnostic interview at ages 18, 21, 26, 32, and 38 and grouped according to their number of dependence diagnoses: (1) never used, (2) reported use during at least one of the assessments but never diagnosed as dependent, (3) diagnosed as dependent at one...