Prenatal Marijuana Exposure and Cognitive Development

"The failure to find an association between prenatal marijuana exposure and a variety of cognitive outcomes persisted in the OPPS sample until the offspring were 4 years of age. At 2, although there was a negative association with language comprehension, this relationship did not retain significance when the home environment was statistically controlled (Fried and Watkinson 1988). At 3 years of age, after controlling for confounding factors, prenatal marijuana exposure was not associated with language expression and comprehension or decreased cognitive scores (Fried and Watkinson 1990)."

Source: 

Fried, Peter A., "The Consequences of Marijuana Use During Pregnancy: A Review of the Human Literature," Journal of Cannabis Therapeutics (London, United Kingdom: Haworth Integrative Healing Press, 2002) Vol. 2, No. 3/4, p. 89.
http://www.cannabis-med.org/da...

Subject: 
Substance: