Role of stimulus and response feature overlap in between-task logical recoding

Psychological Research - The reversal logical recoding rule (i.e., “respond opposite”) induced by an incompatible task (e.g., a task requiring to respond to red or green stimuli by...     

An Unmatched Case‐Control Study of Nearly Lethal Suicide Attempts in Houston,Texas: Research Methods and Measurements

T his article details the research methods and measurements used in conducting a population‐based, case‐control study of nearly lethal suicide attempts among persons aged 13–34 years, residing in Houston, Texas. From November 1992 to July 1995, we interviewed 153 case subjects presenting at one of three participating hospital emergency departments and used random digit dialing to identify 513 control subjects residing in the same catchment area in which cases were enlisted. Unlike most research in this area, this study was designed to extend our understanding of suicidal behavior and prevention activities beyond identification and treatment of depression and other mental illnesses. We discuss the overall strengths and weaknesses of our study design and conclude that this methodology is well suited for studying rare outcomes such as nearly lethal suicide.     

The Ecology of Self-Injury: A Multivariate Approach

ABSTRACT: In an ecological study of the distribution of self-injury in London, Canada, the authors found that self-injury occurred more frequently in the central areas of the city. Multivariate analysis revealed that living arrangements, such as high density of housing and single-person households, are closely associated with inflated rates on self-injury. Low socio-economic status is also related to self-injury but neither family status nor mobility are significant predictors. Ecological relationships such as these suggest directions for future research on individuals and may also be of direct use to planners who wish to locate treatment services advantageously.     

Decision Making in Social Context in Patients with Suicide Attempt History

Decision making has been found to be altered in suicide attempters, but little is known of their performance in social contexts. Twenty‐seven depressed suicide attempters (DSA), 25 nonsuicidal depressed patients (DP), and 60 healthy participants (HC) were evaluated by a decision‐making task in social context . Results indicated DSA and DP obtained lower gains and invested more money with angry partners. DSA were found to invest less money than DP and HC with happy partners. DSA showed insensitivity toward rewards/punishment contingency, and they did not use the socioemotional stimuli to guide their decisions.     

Alcohol Consumption and Nearly Lethal Suicide Attempts

W e conducted a case‐control study of the association between nearly lethal suicide attempts and facets of alcohol consumption; namely, drinking frequency, drinking quantity, binge drinking, alcoholism, drinking within 3 hours of suicide attempt, and age began drinking. Subjects were 13–34 years of age. In bivariable analyses, all measures were associated with nearly lethal suicide attempts. Odds ratios ranged from 2.4 for alcoholism to 7.0 for drinking within 3 hours of attempt. All exposure variables except age began drinking exhibited a J‐shaped relationship between alcohol exposure and nearly lethal suicide attempt. After controlling for potential confounders and other measures of alcohol exposure, drinking within 3 hours of attempt remained most strongly (odds ratios > 6) associated. Alcoholism remained significantly associated in most models, but at lower strength.     

Preliminary analysis of effects of "normal" aging on different memory processes and abilities

Visual recognition-memory span, name-face association, and verbal memory with selective reminding were tested in two groups of 24 normal healthy volunteers (above and below age 50 yr.). The preliminary study suggests differential effects of aging on specific memory components and warrants careful exploration.