The primary objective of this investigation is the formulation of random intercept latent profile transition analysis (RI-LPTA). Our simulation investigation suggests that the election between LPTA and RI-LPTA for examination has negligible impact on the estimation of transition probability parameters when the population parameters are generated…

This article provides a meta-analysis of studies using the crosswise model (CM) in estimating the prevalence of sensitive characteristics in different samples and populations. On a data set of 141 items published in 33 either articles or books, we compare the difference ([delta]) between estimates based on the CM and a direct question (DQ). The…

Monitoring the Future (MTF) is an ongoing research program conducted at the University of Michigan's Institute for Social Research under a series of investigator-initiated research grants from the National Institute on Drug Abuse beginning in 1975. The integrated MTF study includes annual surveys of nationally-representative samples of 8th, 10th,…

Single-case designs (SCDs) are a class of research methods for evaluating intervention effects by taking repeated measurements of an outcome over time on a single case, both before and after the deliberate introduction of a treatment. SCDs are used heavily in fields such as special education, school psychology, social work, and applied behavior…

Parents (n=52) of blind and partially sighted infants and preschoolers were surveyed concerning the frequency of occurrence and stability of the children's stereotyped behaviors. Stereotyped behaviors frequently observed in blind children proved to be stable, whereas other stereotyped behaviors were less stable. Age of child and frequency of…

This videotape recording and accompanying program manual are intended to provide a review of current knowledge about defiance in children, a behavior pattern that research suggests may be increasing in prevalence and that is a known precursor to serious disorders such as oppositional defiant disorder (ODD) and conduct disorder. The manual provides…

Examines the frequency and correlates of unprotected anal intercourse among 250 gay and bisexual African-American men in the San Francisco (California) Bay area. More than 50 percent reported having unprotected anal intercourse in the past six months. Findings demonstrate the need for risk reduction programs targeting this population. (SLD)

This videotape and accompanying manual are intended to provide a review of current knowledge about the management of defiance in children, a common behavior pattern which may be increasing in prevalence and is a known precursor to such serious disorders as oppositional defiant disorder (ODD) and conduct disorder. The first section of the manual…