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Aggressive and violent behaviour is often associated with a diagnosis of attention-deficit hyperactivity disorder (ADHD). This article investigates the relationship between adult attention deficit disorder (ADD) and aggressive cognitions. The Aggression Questionnaire and the Brown Attention-Deficit Disorder Scales were administered to two samples: a “low-risk sample” comprising university students (n = 60), and a “high-risk sample” of prison inmates (n = 117). The prevalence of “probable ADD” was found to be higher in the prison sample (33%), compared with the university sample (20%). There were moderate correlations >r = .5 (p < .01) between total ADHD and Aggression Questionnaire scores in both groups. There were also moderate to strong correlations between subscales of both measures, including cognitive processes such as attention and memory and various forms of aggression, which were particularly apparent in the prison sample. The relationship between ADHD and aggressive behaviour suggests that the treatment of adult ADHD may aid in the management of aggressive behaviour. [ABSTRACT FROM PUBLISHER]

Recent literature in the area of trauma has highlighted the potential for interventions to exacerbate the trauma reaction. The general rule of ‘do no harm’ should apply not only to professionals but volunteers alike. This paper reviews the literature on brief interventions for people who have been exposed to trauma at varying levels. The parameters of a single session intervention and the skill of volunteers are considered in recommending a protocol for intervention. We propose an ‘orienting’ framework to intervention that emphasizes support, normalization and self-help strategies. Copyright © 2003 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Having to intervene in severe crises or bearing witness to human tragedy, can take its toll on the individual (Erickson, Vande Kemp, Gorsuch, Hoke & Foy, 2001; Lind, 2000; Lugris, 2000). These effects can include severe, debilitating anxiety that persists for months and sometimes even years following the event. Because these people are not directly involved in the event, their distress often goes undetected (Brady, Guy, Poelstra & Brokaw, 1999; Motta, Joseph, Rose, Suozzi & Leiderman, 1997). Support resources for people who are indirectly affected by a traumatic event are limited. To date, a history of previous trauma, previous psychological well-being, social support, age, gender, educational achievement, socio-economic status and styles of coping have been highlighted as mediating the effects of indirect exposure to a traumatic incident. Understanding this phenomenon and the mechanisms precipitating such distress is an important step in providing appropriate help for a large number of people indirectly affected by tragic events. Copyright © 2003 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The charge distribution and potential profile of p–n-junctions in thin semiconductor nanowires (NWs) were analyzed. The characteristics of screening in one-dimensional systems result in a specific profile with large electric field at the boundary between the n- and p- regions, and long tails with a logarithmic drop in the potential and charge density. As a result of these tails, the junction properties depend sensitively on the geometry of external contacts and its capacity has an anomalously large value and frequency dispersion. In the presence of an external voltage, electrons and holes in the NWs can not be described by constant quasi-Fermi levels, due to small values of the average electric field, mobility, and lifetime of carriers. Thus, instead of the classical Sah–Noice–Shockley theory, the junction current–voltage characteristic was described by an alternative theory suitable for fast generation–recombination and slow diffusion–drift processes. For the non-uniform electric field in the junction, this theory predicts the forward branch of the characteristic to have a non-ideality factor η several times larger than the values from classical theory. Such values of η have been experimentally observed by a number of researchers, as well as in the present work. [ABSTRACT FROM AUTHOR]