描述性规范提升义务献血的意愿而非行为

描述性规范指大多数人的做法对他人态度和行为的影响。本研究试图利用描述性规范改变公众的义务献血意愿和行为。研究由两个相似实验组成。实验1发现描述性规范促进了被试义务献血的意愿, 但并没有影响实际献血行为; 实验2在实验1的基础上试图通过增加短信提醒来促进义务献血行为, 但是结果同样显示描述性规范促进了被试的献血意愿而非行为。本文对此原因进行了讨论。     

自主控制眼跳：实验范式、神经机制和应用

自主控制眼跳是眼跳类型之一。自主控制眼跳实验范式为研究各种脑损伤,神经疾病和精神失调提供了一种新的研究手段,为研究眼跳的神经机制以及反应抑制、空间工作记忆等高级认知功能提供了重要的方法。文章介绍了自主控制眼跳的两种实验范式：反向眼跳和记忆导向眼跳,阐述了自主控制眼跳的神经机制及其实验范式的应用,指出自主控制眼跳实验范式为评定精神分裂症等脑功能失调病人的神经功能状态提供了重要的信息,为研究各种脑功能失调和精神疾病提供了重要的研究方法。今后的研究趋势是眼跳研究与神经成像技术和临床观察相结合     

Research into the organisation,training and effectiveness of counsellors who work for free

The activities of voluntary or ‘paraprofessional’ counsellors, who work for free, represent a highly significant component of the delivery of psychological therapy in Britain and other countries. However, in recent years there has been relatively little published research into issues associated with the provision of service by counsellors who work on a voluntary part‐time basis, and who typically receive limited training and supervision. This paper introduces a special theme section on counselling in the voluntary sector, which highlights some recent examples of research into the context, organisation, training and effectiveness of such counsellors. Some suggestions are made concerning the research agenda for counselling in the voluntary sector.     

Using action research to develop an assessment system in a voluntary sector counselling service

Voluntary sector low and no cost counselling services very often find themselves overwhelmed by clients. This paper describes how one agency decided to deal with this problem by introducing a system of assessment for differential contracts. A piece of action research enabled the development and introduction of a model of assessment that reflected the values of the agency. The guiding principle of the assessment was that the client's way of managing in the world was the best guide to clinical need. The different lengths of contract are described, together with the criteria for deciding which might be appropriate for a client. The model was introduced on the understanding that it could and would be continuously monitored. The reactions of counsellors and clients that were gathered in a review of the working of the model a year later are described.     

Routes to Triviality

It is known that a number of inference principles can be used to trivialise the axioms of naïve comprehension – the axioms underlying the naïve theory of sets. In this paper we systematise and extend these known results, to provide a number of general classes of axioms responsible for trivialising naïve comprehension.     

Systematic Withdrawal

Although AGM theory contraction (Alchourrón et al., 1985; Alchourrón and Makinson, 1985) occupies a central position in the literature on belief change, there is one aspect about it that has created a fair amount of controversy. It involves the inclusion of the postulate known as Recovery. As a result, a number of alternatives to AGM theory contraction have been proposed that do not always satisfy the Recovery postulate (Levi, 1991, 1998; Hansson and Olsson, 1995; Fermé, 1998; Fermé and Rodriguez, 1998; Rott and Pagnucco, 1999). In this paper we present a new addition, systematic withdrawal, to the family of withdrawal operations, as they have become known. We define systematic withdrawal semantically, in terms of a set of preorders, and show that it can be characterised by a set of postulates. In a comparison of withdrawal operations we show that AGM contraction, systematic withdrawal and the severe withdrawal of Rott and Pagnucco (1999) are intimately connected by virtue of their definition in terms of sets of preorders. In a future paper it will be shown that this connection can be extended to include the epistemic entrenchment orderings of Gärdenfors (1988) and Gärdenfors and Makinson (1988) and the refined entrenchment orderings of Meyer et al. (2000).     

Naïve Comprehension and Contracting Implications

In his paper [6], Greg Restall conjectured that a logic supports a naïve comprehension scheme if and only if it is robustly contraction free, that is, if and only if no contracting connective is definable in terms of the primitive connectives of the logic. In this paper, we present infinitely many counterexamples to Restall's conjecture, in the form of purely implicational logics which are robustly contraction free, but which trivialize naïve comprehension.     

Assisted Suicide,Suffering and the Meaning of a Life

The ethical problems surrounding voluntary assisted suicide remain formidable, and are unlikely to be resolved in pluralist societies. An examination of historical attitudes to suicide suggests that modernity has inherited a formidable complex of religious and moral attitudes to suicide, whether assisted or not. Advocates usually invoke the ending of intolerable suffering as one justification for euthanasia of this kind. This does not provide an adequate justification by itself, because there are (at least theoretically) methods which would relieve suffering without causing the physical death of the suffering person. Carried to extremes, these methods would finish the life worth living, but leave a being which was technically alive. Such acts, however, would provide no moral escape, since they would create beings without meaning. Arguments seeking to justify ending the lives of others need some grounding in concepts of the meaning of a life. The euthanasia discourse therefore needs to take at least some account of the meaning we construct for our lives and the lives of others.     

Changes in Movement Variables Associated With Transient Overshoot of the Final Position

Transient overshoot (TO), which is assessed as the distance between the movement amplitude and the final position, was measured in a series of rapid, discrete elbow flexion movements performed under different distance and loading conditions by 7 participants. A positive relationship was found between kinematic variables (peak velocity, peak acceleration and deceleration, and the symmetry ratio) and the magnitude of TO, particularly in short movements performed against a light load. The relationships between TO and electromyographic (EMG) variables were low and mainly insignificant. Thus, TO contributes to the variability of rapid, discrete movements and therefore should be taken into account as an additional parameter in studies of the scaling of movement variables with movement mechanical conditions. TO could also represent a consequence of mechanical properties of the single-joint system rather than an independently programmed primary submovement.