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PubMed2004

The effect of a training course in aggression management on mental health nurses' perceptions of aggression: a cluster randomised controlled trial.

Nurses' attitudes towards patient aggression may influence their behaviour towards patients. Thus, their enhanced capacity to cope with aggressive patients may nurture more positive attitudes and alleviate adverse feelings emanating from patient aggression. This cluster randomised controlled trial conducted on six psychiatric wards tested the hypotheses that a 5 day training course in aggression management would positively influence the following outcome measures: Nurses' perception and tolerance towards patient aggression and resultant adverse feelings. A repeated measures design was employed to monitor change. No effect was found. The short time frame between the training course and the follow up measurement or non-responsiveness of the measurement instruments may explain this finding.

Adaptation, Psychological↗
PubMedDate not supplied

The effects of diazepam (valium) and aggressive disposition on human aggression: an experimental investigation.

Sixty male subjects with self-reported high, moderate, and low aggressive dispositions were given the opportunity to aggress, by administering electric shocks, against an increasingly provocative fictitious opponent within the context of a competitive reaction time task. Subjects were randomly assigned to one of two conditions: (1) 10 mg of diazepam or (2) placebo. Results indicated that diazepam-intoxicated subjects aggressed by selecting the highest shock setting (10) more frequently than did nonintoxicated subjects. High hostile subjects were also more influenced by the aggression-enhancing effects of diazepam than moderate and low hostile subjects. Benzodiazepine-facilitated aggression is discussed in the context of individual differences and the importance for physicians to assess a patient's disposition prior to prescribing such medication.

Adolescent↗
PubMed2002

Measuring aggression with the staff observation aggression scale--revised.

OBJECTIVE: The staff observation aggression scale (SOAS; Palmstierna & Wistedt, 1987) was developed to measure nature, number, as well as severity of aggressive incidents. In 1999, a revised version of the SOAS (i.e. the SOAS-R), with a more fine-grained severity scoring system, was presented. In the current paper, the development and testing of the revised severity scores of the SOAS-R are addressed. METHOD: In two consecutive studies, staff members recorded inpatient aggression on SOAS-R forms, but also expressed their opinion about the severity of incidents on 100 mm visual analogue scales (VASs). Correlations were calculated between SOAS and SOAS-R severity scores, on the one hand, and clinical judgements of severity, on the other. RESULTS: In both studies, revised SOAS severity scores were more closely related to clinical judgements of aggression severity than the original ones. CONCLUSION: The SOAS-R is a promising tool for research on the prevalence, severity and determinants of inpatient aggression.

Aggression↗
PubMed1975

Aggression and heat: mediating effects of prior provocation and exposure to an aggressive model.

Sixty-four undergraduate males participated in an experiment designed to examine the effects of level of prior anger arousal, exposure to an aggressive model, and ambient temperature on physical aggression. On the basis of Bandura's social learning theory of aggression, it was predicted that uncomfortably hot environmental conditions would be most effective in facilitating later aggression when subjects had both witnessed the actions of the model and been exposed to strong provocation from the victim, but least effective in this regard when they had neither witnessed the actions of the model nor been exposed to prior instigation. In contrast to these predictions, results indicated that high ambient temperatures facilitated aggression by nonangered subjects but actually inhibited such behavior by those who had previously been provoked.

Aggression↗
PubMed1998

Facing stress and conflict: a comparison of the predicted responses and self-concepts of aggressive and non-aggressive people with intellectual disability.

The present research consisted of two studies. A total of 44 participants were involved in the first study: 22 individuals with problems of aggression (Ag) and 22 non-aggressive (NAg) individuals. A sentence completion test was used to explore whether there were differences between the two groups' predicted coping responses in stressful situations. While the Ag group provided most aggressive responses, the NAg participants were more assertive. However, gender differences also emerged, with women proving to be less aggressive. A high number of passive answers were given across all the groups, suggesting that background experience could have influenced the participants' sense of efficacy in stressful situations. In the second study, a subsample of the participants were interviewed. The aim was to explore whether particular background experience coloured their perceptions of self and others, in situations of conflict. While nine out of the 10 Ag participants described incidents where they felt treated in a derogatory manner which could be linked to their disability, only two out of the nine NAg participants felt slighted in this fashion. Hence, a vulnerable sense of self could contribute to greater sensitivity in interpersonal situations, increasing the likelihood of an aggressive response. The clinical relevance of this work is discussed, alongside the possibilities for future research in this area.

Adolescent↗
PubMed2001

Deviant forms of aggression in glucocorticoid hyporeactive rats: a model for 'pathological' aggression?

Deviant forms of aggressiveness have been associated with low plasma glucocorticoid concentrations in humans. Here, we report data on the development of aggressive behaviour in rats in which glucocorticoid secretion was inhibited by adrenalectomy. Such rats were compared with both sham operated rats and adrenalectomized rats in which the fight-induced elevation of plasma glucocorticoids was mimicked by acute injections. Low and stable corticosterone plasma concentrations were maintained by subcutaneous glucocorticoid pellets in adrenalectomized rats. The development of aggressive behaviour was followed over three trials performed at 2-day intervals. Adrenalectomy lead to high aggressiveness already at the first encounter, a decreased threatening (attack signalling) behaviour and a change in attack targeting. While control rats targeted biting attacks towards less vulnerable dorsal parts of the opponent's body, adrenalectomized rats attacked the head frequently. Corticosterone injections that mimicked the fight induced adrenocortical reaction abolished this behavioural pattern. Thus, a reduced responsiveness of the adrenocortical system may be causally linked to deviant forms of aggression in rats.

Adrenalectomy↗
PubMed1990

Methylphenidate in aggressive-hyperactive boys: I. Effects on peer aggression in public school settings.

One of the least documented "known" effects of methylphenidate in hyperactive children is the suppression of peer aggression. In this study, 11 aggressive-hyperactive children received a low (0.3 mg/kg) and moderate (0.6 mg/kg) dose of methylphenidate and placebo for 2 weeks each under double-blind conditions. Children were observed in public school settings during classroom seatwork activities, lunch, and recess. Results showed that methylphenidate suppressed nonphysical aggression (p = 0.06) in the classroom, and a moderate dose decreased physical aggression (p less than 0.01) and verbal aggression (p = 0.07) on the playground. The effect on the rate of appropriate social interaction was variable. The majority of subjects exhibited either the same or higher levels of appropriate social interaction on the 0.6 mg/kg dose compared with placebo. In the classroom, both doses of methylphenidate also resulted in reduced levels of motor movement, off-task behavior, noncompliance, and disruptiveness. Teacher ratings of hyperactivity and conduct problem symptoms revealed drug effects, whereas parallel parent instruments did not.

Aggression↗
PubMedDate not supplied

The early childhood aggression curve: development of physical aggression in 10- to 50-month-old children.

This study examines the prevalence, stability, and development of physical aggression, as reported by mothers and fathers, in a sample of children initially recruited at 12, 24, and 36 months (N=2,253) and in a subsample followed up 1 year later (n=271) in a cross-sequential design. Physical aggression occurred in 12-month-olds, but significantly more often in 24- and 36-month-olds. The rates of physically aggressive behaviors increased in the 2nd year of life, and declined from the 3rd birthday onward. Stabilities were moderate for 12-month-olds and high for 24- and 36-month-olds. At the ages of 24 and 36 months, boys were more aggressive than girls. The results confirm and extend R.E. Tremblay's (2004) hypothesis about the early development of physical aggression.

Age Factors↗
PubMedDate not supplied

Influence of punishment, emotional rejection, child abuse, and broken home on aggression in adolescence: an examination of aggressive adolescents in Germany.

The results of this study provide evidence for the importance of psychosocial risks in childhood for aggressive behavior in adolescence. This study demonstrated that aggressive adolescents differed from a nonaggressive control group in an increased exposure to prior psychotraumatic events, such as sexual abuse (tendency), physical abuse, and broken homes. However, in predicting later aggressive behavior, long-term and chronically effective negative living conditions seem of greater importance. Parenting behavior which includes harsh punishment and emotional rejection as well as separation of the parents early in life are particularly important factors. Whereas aggressive girls do not differ from the nonaggressive control group in terms of self-reported mental health, the aggressive boys reported more attention deficits, depression, anxiety, delinquency, and social problems.

Adolescent↗
PubMed1999

Drinking and marital aggression in newlyweds: an event-based analysis of drinking and the occurrence of husband marital aggression.

OBJECTIVE: Research suggests that domestically violent men are more likely to be heavy drinkers than nonviolent men. However, very little data has addressed the relationship between the occurrence of a domestic violence episode and the co-occurrence of husband or wife alcohol consumption. The purpose of this study was to examine the relationship between husband and wife drinking and whether the most serious conflict involved verbal aggression, moderate physical aggression or severe physical aggression. METHOD: Newlywed couples (n = 366) who were assessed with respect to risk factors for marital violence at the time of marriage were interviewed at the end of their first year of marriage. These in-person interviews focused on characteristics (location, presence of other people, husband drinking, wife drinking) of the most severe verbal conflict, and the first and the most severe episode of physical aggression. RESULTS: After controlling for individual difference risk factors including husband and wife drinking patterns, husband drinking was more likely in episodes of physical vs episodes of verbal aggression. This finding was consistent in both husband and wife, and consistent in both between-groups and within-groups analyses. Wife drinking was largely unrelated to occurrence or severity of violence. CONCLUSIONS: These results support the contention that alcohol use may contribute to the occurrence and/or severity of domestic violence, particularly in the early stages of marriage.

Adolescent↗
PubMedDate not supplied

[Effects of repeated experience of aggression on aggressive motivation and development of anxiety in male mice].

The sensory contact technique allows an aggressive type of behavior to be formed as a result of repeated experience of social victories in daily agonistic confrontations. In mice of the low-aggressive and high-emotional CBA/Lac strain repeated positive fighting experience increases plus-maze anxiety. Behavioral reactivity of males to other conspecifics in the partition test (which measures aggressive motivation) significantly rises. It is concluded that repeated experience of aggression provokes the development of anxiety in male mice. The results suggest that level of anxiety and its behavioral realization depend on duration of aggressive experience and genetic strain.

Aggression↗
PubMedDate not supplied

[Effect of buspirone on aggressive and anxiety behavior of male mice with various aggressive experience].

The effect of the 5-HT1A receptor agonist buspirone on the aggressive and anxious behavior of C57BL/6J male mice with different experience of aggression was studied. In the group of animals with short-time (3 days) winner experience, buspirone (1 mg/kg, i.p.) produced an anxiogenic effect (manifested in the plus-maze test) and reduced the level of aggression (agonist confrontation test). No such effects were observed in the group of animals with a long-time (20 days) aggression experience. It is suggested that the antiaggressive effect of buspirone in the former case is related to the anxiogenic action, while a long experience of aggression reduced the pharmacological sensitivity of 5-HT1A receptors to buspirone in the latter case.

Aggression↗
PubMed1985

Sex and aggression: the influence of gender label on the perception of aggression in children.

To investigate the influence of gender label on adults' perceptions of aggression in children, a videotape of 2 preschool children playing roughly in the snow was shown to 175 college students (139 females, 36 males) who were asked to judge the degree of aggression displayed by 1 of the children (the target child). In the videotape, the children's snowsuits disguised their actual gender, and 4 experimental conditions were created by varying the gender label of both the target and the other (nonrated) child. Hence, the 4 conditions consisted of all possible combinations of gender; boy-boy, boy-girl, girl-boy, and girl-girl. All subjects viewed the same film; only the gender labels used to describe the children varied. Subjects' aggression ratings of the target child varied significantly as a function of the gender label attributed to both the target and the nonrated child. Specifically, the boy-boy condition was rated as significantly less aggressive than the other 3 conditions, which did not differ in level of perceived aggression. This effect was particularly strong among subjects with more experience with children. The results have interesting implications for understanding the process of social category perception.

Adult↗
PubMed1994

The Overt Aggression Scale in a study of lithium in aggressive conduct disorder.

This article describes an open study of lithium carbonate in conduct-disordered children. The objective of the study was to investigate the effectiveness of lithium in reducing aggression and the usefulness of the Overt Aggression Scale (OAS), as a measure of treatment effect. The subjects, 8 children, ages 9.2 to 16.9 years (mean +/- standard deviation [SD] = 12.48 +/- 2.97), were treated for 4 weeks with lithium. Optimal dosages ranged from 1200 to 1800 mg/day (mean = 1350 +/- 227) with corresponding serum lithium levels ranging from 0.86 to 1.39 mEq/L (mean = 1.05 +/- 0.17). OAS results indicated that aggression decreased significantly over time. The findings from the OAS agreed with findings from a more general measure, the Global Clinical Consensus Rating, leading to the conclusion that the OAS is a promising outcome measure for treatment studies of aggression in children. Further placebo-controlled studies of lithium carbonate in reducing aggressive behavior in conduct-disordered children, employing a specific measure such as the OAS, are warranted.

Adolescent↗
PubMed1994

Fear of aggression at work among general practitioners who have suffered a previous episode of aggression.

BACKGROUND: Relatively few data exist on the scale of aggression from patients or patients' relatives suffered by doctors at work. Such aggression might be expected to pose considerable risks of continued morbidity among abused practitioners. AIM: This study set out to survey the continued levels of intimidation experienced by general practitioners who had suffered a previous episode of aggression. METHODS: A retrospective survey was carried out of all general practitioners in the West Midlands Health Authority region, using a piloted postal questionnaire. Of the 2694 surveyed 1093 (41%) responded. Among responding doctors, 687 (63%) had suffered some degree of aggression in the previous 12 months, and these respondents reported on the degree of intimidation experienced during specified clinical duties. RESULTS: Nearly three quarters of previously abused doctors did, at times, express ongoing fears for their safety at work. Indeed, 71% of doctors who qualified in India and Pakistan and 57% of doctors who qualified in the United Kingdom experienced some degree of intimidation within their surgery (90% and 73%, respectively, on night visits). Fear was most commonly reported during visits made out of hours with mild fear being occasionally experienced between 19.00 and 23.00 hours by 316 (56%) of the responding abused doctors and after 23.00 hours by 286 (51%). Eleven respondents (2%) were frequently severely fearful on evening visits and 15 (3%) were always fearful. On night visits frequent severe fear was reported by eight respondents (1%), while 31 were always fearful (6%). The differences between men and women doctors were relatively small within the surgery, but during out-of-hours calls women were significantly more likely to report intimidation than men practitioners and to report significantly higher levels of severity of fear. CONCLUSION: These findings support further consideration of the contractual commitment for general practitioners to provide out-of-hours visiting, of investment in safer surgeries and of greater provision of in-service training in handling aggression and its attendant stress.

Adult↗
PubMed1979

Correlated characters in selection for aggressiveness in female mice. II. Maternal aggressiveness.

The present study investigated whether maternal aggression has shown a correlated response in a program of artificial selection for isolation-induced interfemale aggression in housemice. Females from the first replicate of lines (H1, C1, L1) and the second replicate of lines (H2, C2, L2) from generation S5 were given daily aggression tests for 20 consecutive days following the birth of their first litter. Evidence of a correlated response was found for replicate 2, but results for replicate 1 provided no evidence of a correlated response. In generation S10, when better separation of the lines on isolation-induced aggression had occurred, the study was repeated. In S10 there was clear evidence of a correlated response in both of the replicates.

Aggression↗
PubMed1992

Sexual and aggressive motives in sexually aggressive college males.

The relative contributions to sexual aggression of general sexual and aggressive motives and their respective inhibitory factors were compared. One hundred forty-three university males responded to self-report measures of sexual and aggressive drives, sex and hostility guilt, social desirability response bias, and history of coercive sexuality. With the effects of social desirability controlled, the only predictor of sexual aggression was Sex Guilt, which predicted level of force used but not intimacy of the sexual act obtained.

Adolescent↗
PubMed2000

[Aggressive and auto-aggressive behavior of acute geriatric psychiatry admissions--an empirical contribution].

We investigated the extent of aggressiveness of 494 psychiatric patients at the time of admission. This group was divided into two subgroups according to age: 58 patients were more than 65 years old and the remaining 436 patients were less than 65 years old. The two groups were similar as far as kind and frequency of aggressive behaviour against self or others at the time of admission were concerned. There was an important difference in handling the aggressive behaviour as this was significantly easier with the older patients. Furthermore it was possible to describe psychopathological profiles of risk for both allo- and autoaggressive behaviour. Sociodemographic factors could be identified which were linked with the extent of aggressive behaviour by calculating odds ratios.

Aged↗