The use of behavioural self-reports of drug users is widespread among studies of illicit drug
use. Despite widespread use, concerns about the accuracy of these reports continue to be …

Aims Clinical trials test the safety and efficacy of behavioral and pharmacological
interventions in drug‐dependent individuals. However, there is no consensus about the …

Context There is concern that exposure therapy, an evidence-based cognitive-behavioral
treatment for posttraumatic stress disorder (PTSD), may be inappropriate because of risk of …

Abstract The Timeline Followback (TLFB; LC Sobell & MB Sobell, 1996) interview, which
uses a calendar method developed to evaluate daily patterns and frequency of drinking …

Background: Chronic cocaine abuse remains a serious and costly public health problem.
This study assessed the effectiveness of a voucher-based reinforcement contingency in …

Research involving drug users and treatment evaluations continue to rely extensively on self-
reports of drug use. This paper presents a meta-analytical review of 24 studies published …

The dramatic rise in the number of 12-step programs and participants raises questions
concerning client participation in drug treatment and 12-step programs, and their separate …

Aims To assess the utility of biological testing in a general population survey for estimating
prevalence and evaluating self‐report data quality. Design An audio computer‐assisted …

Escalating reinforcement for sustained abstinence has been effective in treating cocaine
abuse. Under this schedule, patients receive vouchers for cocaine-free urine samples; …

Fifty-nine persons addicted to heroin and maintained by methadone reported on daily heroin
and cocaine use during 2 timeline calendar interviews administered 6 weeks apart …