Issues in the identification and long-term management of Munchausen by Proxy Syndrome within a clinical infant service

Munchausen by Proxy Syndrome is a version of Munchausen's Syndrome whereby a parent, usually the mother, simulates or fabricates disease in one or more of her children in order to seek medical attention. Because this disorder is usually identified in pediatric settings, current literature focuses on identification of the syndrome, with little discussion of treatment issues or management strategies other than confrontation of the parent and removal of the child from the home. With the increased availability of infant mental health services, infant clinicians are likely to be called on to evaluate and treat cases of this disorder. This paper reviews the Munchausen by Proxy literature for infant clinicians and describes the identification and long-term management of one Munchausen by Proxy case within the context of an infant home-visiting service. Pertinent issues that emerged included the difficulties inherent in documenting the mother's pathological behavior, the clinical tension between preventing flight from treatment but limiting harmful behavior, the need for a long-term collaborative relationship with a designated pediatrician, and the importance of further education of protective service workers about this syndrome.     

Serotonin metabolism and serotonergic receptors in Norway rats selected for low aggressiveness to man

Selection of Norway rats (24–27 generations) for low aggressiveness to man resulting in the loss of aggressive responding to handling markedly influences the brain serotonergic system. In “domesticated” Norway rats levels of serotonin in the midbrain and hypothalamus and 5-hydroxyindole acetic acid in the hypothalamus were higher than in non-selected aggressive rats. The activity of the key enzyme in serotonin biosynthesis, tryptophan hydroxylase, in midbrain of rats with genetically determined lack of aggressiveness to man was higher than in aggressive animals, although there was no difference in tryptophan hydroxylase activity in the hypothalamus. B_max and K_D of [³H]spiperone-specific binding in frontal cortex membranes were increased in tame rats. No significant differences in B_max and K_D were found between “domesticated” and aggressive rats in [³H]serotonin binding in the frontal cortex.     

期望与绩效的关系:调节定向的调节作用

经典动机理论认为高期望能提高绩效水平,本研究结合调节定向理论进一步回答这种效应"何时"存在或"如何"产生的问题。研究1通过测量期望水平、并用任务框架操作调节定向,检验了情景启动的调节定向对期望与行为间关系的影响;研究2采取更严格的被试内设计通过任务难度操作期望,考察了作为个体长期差异的调节定向的作用。结果表明:①调节定向调节成功期望与绩效之间的关系:对于促进定向,成功期望与绩效正相关;对于预防定向,期望与绩效相关不显著。②动机可以部分解释调节定向与期望的交互作用机制:高水平的成功期望会提高促进定向个体的动机强度,进而产生高的绩效结果;其对预防定向个体的动机强度的影响不显著。     

Selection for reduced aggressiveness towards man and dopaminergic activity in Norway rats

The brain dopaminergic system is involved in the process of long-term selection for reduced aggressive reaction towards man in Norway rats. The dopamine levels in the striatum as well as the nucleus accumbens with the tuberculum olfactorium were significantly lower in domesticated rats than in their wild counterparts. A substantial decrease was found in homovanillic acid level in the n. accumbens and tuberculum olfactorium. Specific binding of [³H]spiperone which labels D-2 dopamine receptors was higher in the mesolimbic structure of tame rats, whereas binding of [³H]SCH 23390 (D-1 receptors) was unchanged in this area. No substantial differences were detected in D-1 and D-2 binding in striatum. Apomorphine (0.3 mg/kg) elicited less locomotion in tame animals, reflecting a decrease of sensitivity of postsynaptic dopamine receptors. Tame rats showed fewer aggressive contacts in a foot-shock test than wild rats and the D-2 receptor antagonist sulpiride (25 mg/kg) significantly decreased the foot-shock aggression only in wild rats. Therefore, domestication, which diminishes defensive behavior and emotional reactivity of animals, is associated with decreases of dopamine level in the striatum, changed metabolism of dopamine in mesolimbic system, and an alteration in density and senstivity of D-2 receptors.     

信息时代的组织范式：内部市场

1990年以来 ,一种被誉为信息时代的组织范式 ,即所谓的自由企业范式 ,受到了学术界和企业界的很大重视。自由企业范式强调非集中化管理体制 ,灵活的组织内部关系 ,以及内部市场式的经营模式。本文描述了这种组织范式的理论基础及其应用原则 ,并对其在西方国家的应用及对我国的意义作了探讨。     

二级强化程序在药物成瘾研究中的应用

二级强化程序是一种以物质的强化效应为基础,评价药物的精神依赖性潜力的方法,将其应用到自身给药实验中,即为二级强化自身给药模型。在这个模型中,动物在条件性刺激的影响下按压杠杆以寻求药物的行为反映了其对成瘾性药物的渴求。使用二级强化程序,人们发现：条件性刺激既能够影响觅药行为的获得和保持,也能够影响这种行为的消退;伏隔核的核区、杏仁核基底外侧部和内侧前额皮层等部位在药物相关的条件性刺激诱导动物产生觅药行为的过程中起重要作用。二级强化程序的应用为开发治疗药物成瘾的物质提供了一条新思路     

组织中的政治技能及相关研究

政治技能是个体在工作中影响他人以实现组织目标的能力,对个体的工作绩效和某些工作态度、缓解工作中压力带来的紧张感等具有一定的作用。个体的洞察力、控制、亲和力、主动影响及发展经验被视为政治技能的影响因素,通过实践练习、替代学习等方法可实现政治技能的培训和开发。在未来的研究中,对政治技能概念的理解、测量多源性等方面的问题还需要进一步的探讨     

共享心智模型：分布、层次与准确性初探

共享心智模型理论在理论和应用上已经有20多年的历史了,但它尚留有若干基本问题。共享应当包括多种形式,可从同异质和依赖性的关系上进行分析和测量;共享应是多层次多内容的,包括具体的底层构架和上层的抽象构架,以及指向共享内容的态度和信念;在共享心智的准确性和相似性上,唯一的专家心智模型可能不存在,且共享心智模型的演变发展过程较向专家靠近而言更有意义。共享不是团队过程的简单输出,共享心智模型可能包含一套团队加工过程     

对话环境与心理理论发展

大量研究表明,心理理论和语言之间存在着密切的关系,其中对话环境是研究的重要内容之一。纵观国内外关于微观的家庭对话环境和宏观的社会文化环境对儿童心理理论影响的最新研究,表明对话是儿童心理理论充分发展的基础。未来关于儿童心理理论发展的研究,主要包括扩大研究主题,改善研究工具和揭示研究机制等。     

复合伤的"复合效应"中线性与非线性的辩证关系

复合伤的“复合效应”是非线性观在医学研究领域中的一个范例。它不仅具有重要的实际价值,而且具有较高的理论意义。复合伤效应不是单纯的“加重效应”,而是“复合效应”,即可加重,不加重,以至减轻。复合伤的复合效应规律的基本特征和本质是非线性特征,而复合效应中线性与非线性特征的关系是辩证统一的。