Last updated on: 9/10/2007 | Author: ProCon.org

David M. Fergusson, PhD Biography

Title:
Emeritus Professor at the University of Otago at Christchurch
Position:
Not Clearly Pro or Con to the question "Should Marijuana Be a Medical Option?"
Reasoning:

“Regression models adjusting for observed and non-observed confounding suggested that daily users of cannabis had rates of psychotic symptoms that were between 1.6 and 1.8 times higher (P<0.001) than non-users of cannabis….

The results of the present study add to a growing body of evidence suggesting that regular cannabis use may increase risks of psychosis.

The present study suggests that:
A. the association between cannabis use and psychotic symptoms is unlikely to be due to confounding factors; and
B. the direction of causality is from cannabis use to psychotic symptoms.”

“Tests of Causal Likages Between Cannabis Use and Psychotic Symptoms,” Addiction 2005

Theoretical Expertise Ranking:
    Experts
Individuals with MDs, PhDs, JDs, or equivalent advanced degrees in fields relevant to medical marijuana. Also top-level government officials (such as foreign leaders, US presidents, Founding Fathers, Supreme Court Justices, members of legislative bodies, cabinet members, military leaders, etc.) with positions relevant to medical marijuana issues.
Involvement and Affiliations:
  • Emeritus Professor, University of Otago at Christchurch
  • Former Research Professor, Department of Psychological Medicine, Christchurch School of Medicine & Health Sciences, University of Otago, New Zealand
  • Founder and Executive Director of the Christchurch Health and Development Study, Christchurch School of Medicine & Health Sciences, University of Otago
  • Keynote Address speaker “The Development and Evaluation of Early Start” at the New Zealand Early Childhood Research 10th Annual Conference 2006
  • Recipient, gold medal award for Excellence in Research at the School of Medicine & Health Sciences, University of Otago
Education:
  • PhD, school unknown
Other:
  • Founder of the Christchurch Health and Development Study, a 35 year study of a birth cohort of 1265 children born in the Christchurch region in mid-1977.
Quoted in:
  1. Does Marijuana Use Increase the Risk of Psychosis (Including Schizophrenia)?