Do noncontingent vouchers increase drug use?

Data from 2 contingency management trials, targeting opiate or cocaine use, were used to investigate whether noncontingent vouchers inadvertently reinforce drug use. The control group in each trial received noncontingent vouchers matched in value and frequency to those received by experimental groups, but independent of urinalysis. Vouchers were offered thrice weekly for 8 weeks (opiates) or 12 weeks (cocaine).

Detection of alcohol and drug problems in an urban gynecology clinic.

Objective: To compare screening instruments for their utility to detect substance use problems in women seeking gynecologic care, to assess the likelihood that alcohol/drug problems will be detected by physicians during a routine office visit and to examine the relationship between regular alcohol and/or drug use and the patient's presenting gynecologic complaints.

Study Design: Women (N = 360) attending a hospital-based gynecology clinic were screened prior to physician visit using the Michigan Alcoholism Screening Test, CAGE and T-ACE. After the visit, information on presenting complaint and physician's documentation of the patient's tobacco, alcohol and other drug use was abstracted from the medical record.

A twin study on sensation seeking, risk taking behavior and marijuana use.

The contribution of genetic and environmental factors to the covariation between risk-taking and marijuana use was assessed in adolescent twins. Genetic factors were found to significantly influence some traits (i.e.

Family history influence on drug abuse severity and treatment outcome.

Influence of parental alcohol/substance abuse on methadone maintenance therapy (MMT) outcome was examined in 164 DSM-III-R opioid dependent adults with no other current DSM Axis I disorder. Family history positive patients had more DSM-III-R opioid dependence symptoms and were more likely to be classified as severely dependent. However, when placed on identical daily doses of methadone (50 mg), they had lower rates of illicit opioid use but higher rates of cocaine use than family history negative patients.

Environmental transmission of DSM-IV substance use disdorders in adoptive and step families.

Background: One factor contributing to the 3- to 5-fold increase in risk for substance use disorders (SUDs) among children of alcoholics may be the rearing environment. These influences may include availability of substances, modeling of SUDs, inadequate parenting, or other factors. The contribution of parental environmental influences on offspring with SUDs may be estimated independently of genetic influences through assessment of adoptees raised by nonbiological parents.