The yield point of GaAs:Zn pre-deformed in the Peierls regime

In previous work by the present authors, the influence of pre-deformation at 600°C on the strain-rate and temperature dependence of the yield point of GaAs:Zn was investigated. Marked deviations in comparison with the behaviour of as-grown material were found in subsequent deformation at lower temperatures. In the present study the specimens were pre-deformed at 420°C, and the second tests were performed at temperatures between 270 and 390°C. This is the range in which the dislocation motion governing plasticity is dominated by a Peierls mechanism. Again, marked deviations from the properties of as-grown material were observed. They are mainly characterized by a distinctly smaller strain-rate dependence of the yield stress. Only close to the ductile-brittle transition in a rather limited temperature and strain-rate range does the behaviour of pre-deformed crystals approximate that of as-grown material.     

Augmented visual, auditory, haptic, and multimodal feedback in motor learning: A review

It is generally accepted that augmented feedback, provided by a human expert or a technical display, effectively enhances motor learning. However, discussion of the way to most effectively provide augmented feedback has been controversial. Related studies have focused primarily on simple or artificial tasks enhanced by visual feedback. Recently, technical advances have made it possible also to investigate more complex, realistic motor tasks and to implement not only visual, but also auditory, haptic, or multimodal augmented feedback. The aim of this review is to address the potential of augmented unimodal and multimodal feedback in the framework of motor learning theories. The review addresses the reasons for the different impacts of feedback strategies within or between the visual, auditory, and haptic modalities and the challenges that need to be overcome to provide appropriate feedback in these modalities, either in isolation or in combination. Accordingly, the design criteria for successful visual, auditory, haptic, and multimodal feedback are elaborated.     

The de‐escalation of commitment: predecisional accountability and cognitive processes

Escalation of commitment describes the continuation of a course of action in spite of drawbacks and continuing insecurity of goal achievement. To prevent escalation and its associated costs, de‐escalation techniques are valuable. The present study investigates predecisional accountability to an unknown audience as a de‐escalation technique. In addition, the evolution of cognitive processes (reasons for persisting) during escalation is examined. As predicted, predecisional accountability has a de‐escalating effect. In addition, escalation is accompanied by an increase of nonrational reasons for continuing the respective course of action, and decision makers without accountability provide more nonrational reasons for not quitting than those who are held accountable.     

How planning facilitates behaviour change: Additive and interactive effects of a randomized controlled trial

Planning interventions have proven effective to change behaviour. However, less is known about their underlying mechanisms. To better understand the processes by which planning interventions unfold their effects, a combined action planning and coping planning intervention was tested in a field setting, with the focus on mediating and moderating effects of theory‐derived social‐cognitive variables. In a randomized controlled trial, 374 employees of a logistics company were asked to participate in either a combined action planning and coping planning intervention or an active control group. Four weeks later, self‐reported changes in fruit and vegetable intake, action planning, coping planning, intentions and self‐efficacy were measured. Single and simultaneous mediating effects on behaviour were tested with intention‐to‐treat analyses, along with interaction effects between planning processes. Action planning and coping planning mediated intervention effects on fruit and vegetable intake not only separately, but also simultaneously (multiple mediation). Action planning and coping planning had main and interactive effects on behaviour change (moderation). Action planning and coping planning may exert both additive and synergistic effects on health behaviour change. Volitional interventions should include both action planning and coping planning components and stimulate the use of planning in everyday life. Copyright © 2009 John Wiley & Sons, Ltd.     

„Insightfulness Assessment“

In this article a new method of Oppenheim and Koren-Karie (2002) is presented for the assessment of the insightfulness of parents regarding their children’s inner world. Parental insightfulness involves the capacity to see things from the child’s point of view, and is based on a) insight into the child’s motives, b) a complex view of the child and c) openness to new information about the child. Insightfulness is seen as the capacity underlying sensitive and positive parenting and providing the context for secure child-parent attachment. In the assessment of insightfulness parents view video segments of their interactions with their children and are subsequently interviewed regarding their children’s and their own thoughts and feelings during the segments. Interviews are transcribed, rated in 10 scales and subsequently classified into 1 of 4 groups. The first of the four groups indicates insightfulness while the remaining three indicate a lack of insightfulness.     

马克思主义与文化理论

马尔库什是东欧新马克思主义重要流派——布达佩斯学派的主要成员之一,早年与赫勒等人师从卢卡奇进行哲学和社会学研究。上个世纪70年代,由于政治原因,他被迫移居国外。马尔库什因与赫勒、费赫尔合著的《对需要的专政》以及专著《马克思主义与人类学》等理论研究而闻名。在本文中,他从马克思关于文化问题论述中所涉及到的三个概念——"基础与上层建筑","意识形态"和"文化生产"入手,对三者的内涵、价值及存在的悖论进行了个人阐述。     

Patienten mit einer wahnhaften Depression in der Maßregel nach § 63 StGB

Delinquency of depressed patients numerically plays a minor role in criminal or civil law. Compared with the high prevalence of affective disorders in the general population, the frequency of patients in forensic psychiatric hospitals with the respective disorder as a main diagnosis is low. The spectrum of possible crimes committed by depressed subjects essentially comprises disease-characteristic offences, amongst which cases of extended suicide or attempted suicide are the foremost and most tragic offences. Based on 2 case reports notions of extended suicide as well as questions of forensic assessment are discussed.     

Logical expressivism,logical theory and the critique of inferences

Synthese - The basic idea of logical expressivism in the Brandomian tradition is that logic makes inferential relations explicit and thereby accessible to critical discussion. But expressivists...