Early antecedents of spouse abuse

Males taken into police custody for reported spouse abuse (n = 19) and a matched control group (n = 19) were asked to describe the drinking habits of their parents and the extent of intra-family violence witnessed by them as children. The retrospective data were compared to the participant's own present alcohol use and aggressiveness (CTS). Excessive paternal drinking and intra-family violence were recalled significantly more often by the spouse abusers than by the controls. A latent structure model suggested that the accumulated violence history was less well predicted by either paternal violence or present aggressiveness than by the direct and indirect effects related to drinking. Context-specific social learning could explain why the parental drunken violence behavior pattern witnessed by the child was repeated by the adult spouse abuser. Aggr. Behav. 23:239–243, 1997. © 1997 Wiley-Liss, Inc.     

Peer Effects in Drug Use and Sex Among College Students

Past research suggests that congregating delinquent youth increases their likelihood of problem behavior. We test for analogous peer effects in the drug use and sexual behavior of male (n = 279) and female (n = 435) college students, using data on the characteristics of first-year roommates to whom they were randomly assigned. We find that males who reported binge drinking in high school drink much more in college if assigned a roommate who also binge drank in high school than if assigned a nonbinge-drinking roommate. No such multiplier effect is observed for females, nor are multiplier effects observed for marijuana use or sexual behavior for either males or females. Students who did not engage in these behaviors in high school do not appear to be affected by their roommates high school behavior.     

Relationships Between Treatment Components, Client-Level Factors, and Positive Treatment Outcomes

How different amounts and components of treatment affect substance abuse treatment outcomes is fundamentally important to evaluating current treatment practices and recommending improvements. Through a secondary analysis of data from the National Treatment Improvement Evaluation Study (NTIES), the present study examined the relationships between treatment components, client-level factors, and positive treatment outcomes. Several components were shown tohave significant effects on the odds of a positive outcome, over and above the effects of client background characteristics. Depending on treatment modality, these included length of stay; whether or not clients reported seeing their treatment plan hours per month in group and individual counseling; utilization ofeducational, vocational, and other ancillary services; use of antianxiety and drug and alcohol medications; and client matching. Several interactions between client-level factors and treatment components were also observed. Studylimitations are discussed, followed by implications for policy and practiceand suggestions for further research.     

Failure to induce aggression in inhibited and in genetically non-aggressive mice through injections of ethyl alcohol

Two kinds of nonaggressive mice were used as subjects: 1) males from a strain selectively bred for nonaggressiveness (TNA) and 2) males from a strain selectively bred for aggressiveness (TA) but made nonaggressive by defeats in fights. The aggressiveness of neither type of animal was increased by injections of ethyl alcohol in concentrations of 1 gm/kg and 1.5 gm/kg. Three series of experiments were performed. The results were incompatible with the assumption of a general physiological aggression-heightening effect of ethanol, and also with an assumption of removal by alcohol of learned inhibitions against aggression.     

Elaboration of Cognitive Knowledge of Biology from Childhood to Adulthood

Fifty-seven stimulus words from general biology were presented to subjects ranging from fourth graders to college students. Their free-word-association responses were analyzed according to the relationships between stimulus and response words. Response patterns provided strong support for the Piagetian sensorimotor, concrete operational, and formal operational stages. They also revealed increasing hierarchical organization of knowledge with increased biology learning.     

The Effectiveness of Substance Abuse Treatment in Reducing Violent Behavior

The use of alcohol and other drugs has long been associated with violence. Yet relatively little is known about the effect of treatment on specific violent behaviors. This study examines violent behaviors in the National TreatmentImprovement Evaluation Study (NTIES), and assesses the extent to which treatment appears to reduce violence for each measured behavior. It also examines these reductions by gender, treatment modality, and whether the client wasa victim of violence in addition to being a perpetrator. The results indicate large reductions in violence among clients actively violent during the pretreatment period, with virtually no increase in violence among clients not actively violent during that same period, irrespective of gender, modality, or victimization status. On their face, the results strongly suggest that substance abuse treatment is effective in reducing violent behavior. Alternative explanations areproposed and assessed, followed by implications for policy, practice, and future research.     

Aggressive disposition,alcohol, and aggression

This study investigated the effect of aggressive disposition on intoxicated and non-intoxicated aggressive behavior. Prior aggressiveness was measured with a structured questionnaire. Based on a bipartite split of scores, 28 subjects were assigned to the high aggressor group, and 29 to the low aggressor group. Subjects in both disposition groups were then randomly assigned to either a drunk or sober condition, and participated in a competitive reaction time task involving the administering and receiving of electric shocks to/from a fictitious opponent under conditions of high and low provocation. Aggression was defined as shock level intensity delivered to the sham opponent. When highly provoked, sober high aggressors were significantly more aggressive than low aggressors, thus validating the measure of aggressive disposition. When intoxicated, highly provoked individuals in both the high and low aggressive disposition groups attained equal levels of aggression. It was low aggressors who responded to escalated provocation with a significant increase in aggression responding when intoxicated. These results lend support to the notion that a pharmacological effect of alcohol can increase aggressive behaviour. Aggr. Behav. 23:11–18, 1997. © 1997 Wiley-Liss, Inc.     

Serum testosterone,cortisol, glucose,and ethanol in males arrested for spouse abuse

Concentrations of ethanol, testosterone, cortisol, and glucose were determined in serum obtained from 16 males taken into police custody after incidents of spouse abuse. The mean blood ethanol level at the time of arrest was 33.3 ± 2.6 mM. Serum testosterone levels were significantly lower and cortisol levels higher at the time of police intervention (within 1 hour of the incident) compared to control data collected later from the subjects when sober. Offenders did not differ from a group of nonviolent pub patrons at similar blood ethanol levels (35.9 ± 4.5 mM) with respect to serum testosterone, cortisol, or glucose, but their sober state cortisol and glucose concentrations were significantly higher compared to a control group of nonalcoholic men. Intoxication or acute hormonal changes were thus not specifically associated with violent behaviour. Provocative cues, however, may have been more frequent in the offender families, as Straus Conflict Tactics data showed that offenders and victims resorted to verbal aggression significantly more often than control families. The significantly elevated cortisol and glucose concentrations in offenders when sober compared to nonviolent controls could be viewed as direct effects of life stress, or as indirect effects of stress mediated by learned escape drinking. Excessive drinking as well as spouse abuse could be maladaptive coping strategies that principally serve to maintain the status quo, physiologically as well as psychologically. © 1992 Wiley-Liss, Inc.     

The effects of alcohol and delta-9-tetrahydrocannabinol on human physical aggression

Forty male undergraduates were provoked following their ingestion of high or low doses of either alcohol or delta-9-tetrahydrocannabinol (THC). The expression of physical aggression was related to the quantity of alcohol ingested. The high dose of alcohol instigated more intense aggression than the low dose. The high dose of THC, on the other hand, did not increase aggressive behavior. In fact, it tended to produce a weak suppression effect.