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181.
The clicker technique is a newly developed system that uses frequent testing in the classroom to enhance students' understanding and provide feedback to students and teachers. Using a laboratory model of the clicker technique, Experiment 1 explored the effects of the clicker technique, via its potential for compressing learning time and its partially individualized instruction, on the acquisition, retention, and generalization of knowledge at immediate and delayed tests. Results supported the clicker technique as a viable method for instructors to promote generalizable learning and to conserve teaching time. Experiment 2 examined the clicker technique in terms of its components, studying and testing, to determine which components are crucial to its effectiveness. Results indicated that the combination of studying and testing promotes superior performance only during acquisition, relative to either studying or testing alone, and neither study, test, nor the combination of study and test led to a retention advantage. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   
182.
Anger and aggression are common combat-related behavioral health problems. The impact of combat on anger and aggression appears to be largely attributable to symptoms of posttraumatic stress disorder (PTSD). Factors that moderate the purported pathway from combat to anger and aggression are poorly understood. We examined the conditional direct and indirect associations of combat exposure with self-reported anger and aggression using survey data collected from 592 U.S. Soldiers during a combat deployment in Afghanistan. Unit morale was examined as a moderator between combat exposure and PSTD symptoms, as well as the indirect association of combat exposure with anger and aggression via PTSD symptoms, controlling for depression symptoms. Results indicated that unit morale was negatively correlated with PTSD symptoms and self-reported anger and aggressive behaviors. Perceptions of unit morale moderated the direct association of combat exposure with PTSD symptoms. Unit morale also moderated the indirect association of combat exposure with anger and aggression through PTSD symptoms. Unit morale moderated the association of combat exposure with anger and aggression during combat operations by putatively mitigating the deleterious effect of combat on stress-related symptoms. The impact of policy and leadership on soldier and unit morale should be carefully considered given its protective role during combat operations.  相似文献   
183.
Bacterial meningitis is a life threatening infection of the central nervous system. This illness is most prevalent early in life when the healthy child is rapidly acquiring language. This study investigated whether children with a history of bacterial meningitis were at risk for language difficulties post illness. Thirty post-meningitic children, aged between 9 years 0 months and 11 years 0 months, participated in this study. Each subject was administered a measure of non-verbal cognitive ability and a range of language tasks. These children performed poorly on applied language tasks, which tap skills used in effective discourse. These deficits occurred despite age appropriate performances on measures of linguistic/grammatical knowledge. These findings clearly illustrate that bacterial meningitis has implications for ongoing language development, which emphasises the importance of long term follow up. In developmental terms, this discrepancy between verbal knowledge and problem solving represents a dissociation between language skills which develop early in life and those which emerge later. This pattern of results suggests that bacterial meningitis may result in a delay in language development. A young age at illness was identified as an additional risk factor for adverse outcome. This study highlights the need to inform parents/guardians that post-meningitic children are at risk for experiencing language difficulties throughout childhood.  相似文献   
184.
185.
Clinical research using grounded theory methodology was undertaken to discover the origin, structure and meaning of risk-taking, dangerous behaviour in childhood. Three different situations were identified in which risk-taking, dangerous behaviour occurred. These were named illusory-haven, no-haven and perilous-haven: 'haven' describing different object relationships which occurred both inter-psychically and intra-psychically, each of which was dangerous for the child. These configurations of relationships were found to be meaningfully linked to different situations in the Oedipal drama. The 'havens' were also found to be important in linking patterns of family relationships to gang formation. By using the havens in this broader context the insights gained from the Oedipus Complex are seen to be more widely applicable. Es wurde klinische Forschung , die sich auf theoretische Methodik beruft, benutzt, um den Ursprung, die Struktur und die Bedeutung von risikohaftem, gefährlichem Verhalten in der Kindheit zu entdecken. Es wurden drei verschiedene Situationen identifiziert, in denen risikohaftes, gefährliches Verhalten auftrat. Diese wurden illusorische Oase, keine Oase und gefähliche Oase genannt: 'Oase' beschreibt verschiedene Objektbeziehungen, die sowohl interpsychisch als auch intrapsychisch auftreten und jeweils gefährlich für das Kind sind. Diese Beziehungskonfigurationen konnten bedeutungsvoll mit verschiedenen Situationen des ödipalen Dramas verbunden werden. Die 'Oasen ' wurden auch als bedeutend dafür gesehen, Muster von Familienbeziehungen mit Gangformationen in Verbindung zu setzen. Indem man die Oasen in diesem weiteren Zusammenhang benutzt, werden die Einsichten, die aus dem ödipuskomplex gewonnen werden, als weitreichender anwendbar gesehen. Des recherches cliniques utilisant la méthodologie dite de la théorisation ancrée (analyse qualitative et catégorielle) ont été entreprises afin de déceler, chez l'enfant, l'origine, la structure et la signification de la prise de risques et du comportement dangereux. Trois situations différentes, dans lesquelles ce type de comportement se produit, ont été identifiées. Elles sont appelées «havre illusoire», «absence de havre» et «havre périlleux»; le mot «havre» est ici employé pour désigner les différentes relations objectales, inter-psychiques comme intra-psychiques, qui s'avèrent dangereuses pour l'enfant concerné. Ces configurations relationnelles sont liées de façon significative à certains avatars du drame ?dipien. L'idée du «havre» est une représentation qui permet de relier certaines configurations relationnelles familiales à la formation de «gangs» ou de bandes. La notion de «havre» utilisée dans ce contexte élargi permet de conclure que les insights acquis grâce au complexe d'?dipe sont d'application plus générale. Sono state fatte delle ricerche cliniche utilizzando una metodologia teorica fondata per scoprire l'origine, la struttura e il significato del comportamento di correre rischi e di quello pericoloso nell'infanzia. Si identificarono tre diverse situazioni in cui si presentava tale comportamento. Queste furono denominate rifugio-illusorio, non rifugio e rifugio pericoloso: 'il rifugio' descrive diverse relazioni d'oggetto sia a livello inter-psichico che intra-psichico, ciascuna delle quali e' stata pericolosa per il bambino. Risulto' che queste configurazioni di relazioni erano significativamente correlate a diverse situazioni nel dramma edipico. I 'rifugi' erano anche importanti nel correlare modelli di relazioni familiari alla formazione della gang. Usando i rifugi in questo contesto piu' ampio le insights ricavate dal complesso edipico possono essere piu' largamente applicabili.  相似文献   
186.
We explored the attentional demands of unpleasant picture viewing and emotion regulation strategies. Participants received instructions to view, reappraise, or suppress their emotional experience to unpleasant and neutral pictures, while performing a concurrent auditory discrimination task, both during and after the picture presentation period. Reaction times (RTs) were slower during unpleasant than neutral pictures, which persisted into the post-picture period. RTs were also slower during reappraisal and suppression than viewing and for earlier than later tones following picture onset. An enduring effect of negative emotion was found in the picture and post picture period for suppression but not reappraisal. Findings suggest that both viewing emotional stimuli and regulating one’s emotions using either reappraisal or suppression draw upon common attentional resources, but with suppression resulting in the distinct cost of maintaining the effects of negative emotion.  相似文献   
187.
In this article we use interview and direct observation data to examine the experiences of young people in two Philadelphia nightlife scenes, and the ways in which they manage risk of physical and sexual assault. Our analysis reveals several environmental-level factors that shape risk exposure, as well as a number of individual-level tactics used to manage risk. Our observations are discussed in terms of their implications for developing a risk management framework that accounts for the role of individual- and environmental-level factors in shaping victimization.  相似文献   
188.
Abstract

Background In survival analysis, those who are alive are statistically coded as 1.0 while those who are dead are coded as 0.0. Since everyone who remains alive is given the same score, a person confined to bed with an irreversible coma is alive and is counted the same as someone who is active and asymtomatic. The Quality of Well-being (QWB) scale defines levels of wellness on the continuum between death and optimum function and integrates morbidity and mortality into the same number. This paper demonstrates the effect of including mortality in QWB estimates for male adults with HIV infection.

Method This study involves follow-up of a cohort of 386 male adults participating in the San Diego HIV Neurobehavioral Research Center (HNRC). Patients were evaluated using the QWB at enrollment and at six month intervals. All patients were classified into three stages of HIV disease according to the Center for Disease Control (CDC) classification: CDC IV (symptomatic HIV disease), CDC II or III (asymptomatic infection) and uninfected male controls.

Results QWB scores were calculated with and without mortality included for men in each CDC class who completed a one year (N = 148) or two year follow-up (N = 60). At each evaluation, there were significant differences among CDC classes and inclusion of deaths increased the variance accounted for by CDC class at each evaluation.

Conclusions HIV infection has significant impacts upon both morbidity and mortality. Survival analysis captures only the mortality dimension, while quality adjusted survival analysis using the QWB includes both dimensions. We propose quality adjusted survival analysis as a more sensitive method for assessing outcome in HIV disease and other health conditions.  相似文献   
189.
Writing about traumatic events can produce health benefits, yet emotionally non-expressive or cognitively avoidant individuals may be unwilling or unable to express their emotions. This study examined non-expression, cognitive avoidance, response to writing, and subsequent health. As part of a larger study, participants ( N = 71) with asthma or rheumatoid arthritis (RA) wrote about traumatic experiences for 20 min on three consecutive days. Alexithymia, denial, behavioral disengagement, mental disengagement, focus on/venting of emotions, avoidant thoughts, and health status were assessed at baseline, health status again 4 months after writing. Essays were coded for how personal and how emotional they were, and for narrative structure. Non-expression and cognitive avoidance were neither related to how personal or emotional essays were, nor to affective response to writing. High levels of denial or avoidant thoughts predicted less narrative structure. Avoidant thinking marginally predicted health improvements in RA patients. Results suggest that non-expression and cognitive avoidance do not interfere with writing in terms of emotional engagement, but may influence narrative use.  相似文献   
190.
This review paper outlines the issues associated with the assessment of executive function (EF) in children and adolescents, and describes the developmental profile of executive processes across childhood. At the outset, EF is defined, and cognitive and behavioral impairments associated with executive dysfunction (EDF) are described. A developmental model of EF is proposed incorporating four discrete but inter-related executive domains (attentional control, cognitive flexibility, goal setting, and information processing) which operate in an integrative manner to enable “executive control”. Characteristics that constitute traditional EF measures are discussed, as are the problems associated with test interpretation. The ecological validity of EF tests and neuropsychological assessment procedures are examined, and adjunct methods of measurement are presented to enable a more comprehensive and valid assessment of EF. Based on developmental and normative studies, the maturation of executive domains is mapped. Attentional control appears to emerge in infancy and develop rapidly in early childhood. In contrast, cognitive flexibility, goal setting, and information processing experience a critical period of development between 7 and 9 years of age, and are relatively mature by 12 years of age. A transitional period is thought to occur at the beginning of adolescence, and shortly after “executive control” is likely to emerge. In order to confirm our current understanding of EF development and further enhance our understanding of brain-behavior relationships, longitudinal studies incorporating structural and functional neuroimaging are required.  相似文献   
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