Selective cardiovascular effects of stress and cigarette smoking in young women

In an earlier study, we found that men who smoked a cigarette and then engaged in a mildly stressful activity (video game) evidenced pronounced increases in heart rate and blood pressure, which were approximately equal to the sum of the effects produced by either smoking alone or stress alone. In the present study, a 2 (smoke vs. sham smoke) X 2 (stress vs. no stress) factorial design was used to evaluate the impact of stress and smoking on the cardiovascular responses of young women. The results revealed that the combination of stress and cigarette smoking produced blood pressure and heart rate responses that were larger than the additive effects of smoking and stress taken separately.     

Stress-induced Fos-like Immunoreactivity in the Pons and the Medulla Oblongata of Rats

Immunoreactivity of the immediate early gene c-fos was used to investigate changes in the activity of brainstem neurons in response to acute stressors like immobilization, formalin-induced pain, cold exposure, hemorrhage and insulin-induced hypoglycemia. Different stressors induced Fos-like immunoreactivity in different pontine and medullary neurons. A single, 3 hour immobilization was found to be a very strong stimulus that activated brainstem catecholaminergic (tyrosine hydroxylase-immunopositive) neurons and cells in the raphe and certain pontine tegmental nuclei, as well as in the reticular formation. Pain, induced by a subcutaneous injection of formalin was also effective on catecholamine-synthesizing neurons and on others cells in the nucleus of the solitary tract. Cold exposure activated cells mainly in the sensory spinal trigeminal and parabrachial nuclei and in the so-called "pontine thermoregulatory area". Moderate Fos-like immunoreactivity was induced by a hypotonic (25%) hemorrhage in medullary catecholaminergic neurons, the nucleus of the solitary tract and the Barrington nucleus. Among stressful stimuli used, insulin-induced hypoglycemia elicited the smallest Fos activation in the lower brainstem. The present observations indicate that different stressors may use different neuronal pathways in the central organization of the stress response.     

Exploring definitions of bullying among personality disordered patients in a maximum‐secure hospital

The current study explored the perceptions of staff and patients concerning how patient‐to‐patient bullying should be defined and what behaviours it should include. Participants were randomly selected from the Personality Disorder Unit of a maximum secure hospital. A total of sixty interviews were conducted (30 staff and 30 patients). Problems in attempting to utilise definitions of bullying developed for use in other contexts, i.e., schools, were identified. Patients and staff presented with similar views about how it should be defined: both felt that aggression did not have to be repeated or severe in order to be classed as bullying, that bullying could be accidental, that the power imbalance between perpetrator and victim was not always explicit and, finally, that victims could provoke bullies unintentionally. Indirect (i.e. covert) forms of aggression were less likely to be considered bullying than direct (i.e. overt) forms. A number of differences were found between staff and patients regarding how bullying was conceptualised. Staff were more likely than patients to hold the belief that some patients liked being bullied, and appeared to acknowledge a broader definition of bullying than patients, accounting for a wider range of aggressive behaviours. A number of similarities between the current study and previous prison‐based research were found. The implications of these findings for current research and the value in attending to prison‐based research are highlighted. Aggr. Behav. 00:000–000, 2005. © 2005 Wiley‐Liss, Inc.     

Association between measures of aggression and bullying among juvenile and young offenders

This study addresses the relationship between aggression and behaviors indicative of bullying in a sample of incarcerated male juvenile and young offenders. The study also addresses whether or not offenders who bully others and/or are bullied themselves can be identified by the type of aggression that they report. Ninety‐five juvenile and 196 young offenders completed a self‐report behavioral checklist (DIPC: Direct and Indirect Prisoner Behavior Checklist) that addressed their experience of and involvement in behaviors indicative of bullying. They also completed the Aggression Questionnaire (AQ), a measure of physical and verbal aggression, anger and hostility. Four categories of offenders were identified from the DIPC ‐ pure bullies, pure victims, those who were both bullies and victims (bully/victims), and those not‐involved in bullying behavior. As predicted, behaviors measured on the DIPC that were indicative of ‘bullying others’ correlated positively with scores on the AQ. There was no indication, however, that physical AQ and physical bullying on the DIPC were the same constructs. There was a closer association between verbal AQ scores and verbal bullying on the DIPC. Bullies and bully/victims reported higher levels of physical and verbal aggression, and bully/victims reported higher levels of hostility and anger, than the other categories. It is concluded that although there are similarities between the AQ and the DIPC, there is no evidence that they are measuring the same type of aggression, although different groups involved in bullying can be partly distinguished by their scores on the AQ. Aggr. Behav. 30:29–42, 2004. © 2004 Wiley‐Liss, Inc.     

Nature,extent, and causes of bullying among personality‐disordered patients in a high‐secure hospital

The present study explored the perceptions and experiences of the nature, extent and causes of bullying among personality‐disordered patients, with a subsidiary aim of exploring differences in perceptions between staff and patients. The sample was selected from the Personality Disorder Unit of a high secure hospital. The total sample consisted of 60 participants, 30 patients and 30 staff. Participants engaged in a semi‐structured interview based on that developed by Brookes [1993] and modified by Ireland and Archer [1996] and Ireland [2002a]. The interview assessed their perceptions and experiences of patient‐to‐patient bullying. One fifth of patients and staff reported that they had seen a patient being bullied in the previous week. One‐fifth of patients reported that they had been bullied in the previous week and less than one tenth reported that they had bullied others. The most frequent types of bullying reported were theft‐related, verbal abuse, being made to do chores, physical assaults and intimidation. One fifth of the sample reported that sexual abuse took place. Victims were generally perceived to be ‘easy targets’ that were vulnerable, either physically or emotionally. Staff identified a wider range of victim types than patients. The results highlight how patient‐to‐patient bullying does occur and is an important issue worthy of further research. A number of similarities were found between the current findings and those of prison‐based research suggesting that both hospitals and prisons share a number of environmental similarities that help to explain why bullying takes placed in secure forensic settings. Aggr. Behav. 30:229–242, 2004. © 2004 Wiley‐Liss, Inc.     

Intra-group aggression among prisoners: bullying intensity and exploration of victim-perpetrator mutuality

A new multiple indicator method of assessing bullying behaviour is employed (Direct and Indirect Prisoner behaviour Checklist - Scaled version [DIPC-SCALED]) with 605 adult prisoners (487 men and 118 women). The study explores if the DIPC-SCALED is a reliable method comprising of identifiable aggression factors; if prisoners can be classified into groups based on behavioural frequency; and if there is evidence for mutual victim/perpetrator groups. The DIPC-SCALED proved reliable, comprising of a number of aggression factors. Prisoners could be classified into groups based on behavioural frequency with one-fifth classified into an "intense" perpetrator and/or victim group. Evidence for mutual perpetrator/victims was found. Results are discussed with regards to the method used and the value in accounting for behavioural frequency in group classification.     

Sectioned offenders presenting with enduring mental illness: a study exploring behaviors indicative of bullying

Logit and logistic regression analyses were employed to explore the nature, extent and predictors of behaviors indicative of "being bullied" and of "bullying others" in a sample of 125 adult male offender-patients sectioned for enduring mental illness and detained within a high-secure psychiatric hospital. The study addresses the lack of research into this specialized population to date, with a subsidiary aim of comparing the results directly with a previous study conducted with a population of adult male personality-disordered offender-patients (n = 53). Participants were required to complete a self-report behavioral checklist (Direct and Indirect Patient behavior Checklist-Hospital version Revised). The prediction that indirect (subtle) aggression would be reported more frequently than direct aggression was supported in relation to perpetration estimates, with evidence such aggression was also more prevalent among personality-disordered than mentally ill offender-patients. As predicted verbal aggression was the most commonly reported direct behavior. Although it was predicted that those perpetrating aggression would present with increased experience with secure settings this was only supported with regard to bully-victims. Contrary to the prediction made, those victimized did not present with less experience of secure settings. Consistent with the hypothesis, bully/victims were predicted by increased negative behavior toward staff and hospital rules. The results are discussed in relation to the environment in which the aggression is taking place with the implications for practice and future research outlined.