Geoffrey R. Twitchell

Serotonin transporter promoter polymorphism, peripheral indexes of serotonin function, and personality measures in families with alcoholism

Scott F. Stoltenberg, Geoffrey R. Twitchell, Gregory L. Hanna et al. · American Journal of Medical Genetics · 2002 · 144 citations · Full text

Life Sciences, Genetics, Molecular Genetics +15

Personality test scores as predictors of alcoholism almost a decade later

Marc A. Schuckit, J. Larry Klein, Geoffrey R. Twitchell et al. · American Journal of Psychiatry · 1994 · 72 citations

Social Sciences, Psychiatry, Psychology +14

The anatomy of a follow‐up

Geoffrey R. Twitchell, CAROL A. HERTZOG, Jeffery L. Klein et al. · British Journal of Addiction · 1992 · 63 citations

Public Health, Behavioral Sciences, Behavioral Medicine +14

Serotonin Transporter Promoter Polymorphism Genotype Is Associated With Behavioral Disinhibition and Negative Affect in Children of Alcoholics

Geoffrey R. Twitchell, Gregory L. Hanna, Edwin H. Cook et al. · Alcoholism Clinical and Experimental Research · 2001 · 59 citations · Full text

Life Sciences, Genetics, Psychiatry +17

Comparison of General and Detailed HIV Risk Assessments Among Methamphetamine Abusers

Geoffrey R. Twitchell, Steven Shoptaw · AIDS and Behavior · 2002 · 39 citations

Public Health, Preventive Medicine, Psychiatry +11