Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults.

@article{Fried2002CurrentAF,
  title={Current and former marijuana use: preliminary findings of a longitudinal study of effects on IQ in young adults.},
  author={Peter A. Fried and Barbara Watkinson and Deborah James and Robert I. Gray},
  journal={CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne},
  year={2002},
  volume={166 7},
  pages={887-91}
}
BACKGROUND Assessing marijuana's impact on intelligence quotient (IQ) has been hampered by a lack of evaluation of subjects before they begin to use this substance. Using data from a group of young people whom we have been following since birth, we examined IQ scores before, during and after cessation of regular marijuana use to determine any impact of the drug on this measure of cognitive function. METHODS We determined marijuana use for seventy 17- to 20-year-olds through self-reporting and… CONTINUE READING