Social categorization and fit detection under cognitive load: efficient or effortful?

Participants perceived a discussion between members of two social categories in a name‐matching paradigm. Discussions either exhibited inter‐category fit, defined as a covariation of category membership and the category members' attitude positions, or not. Orthogonally, there was cognitive load at encoding, load at retrieval, or no concurrent load. Memory for the statements and memory for the speaker of a statement were affected by load with little evidence for fit effects. Conversely, category memory, reconstructive category guessing and perceived fit were affected by inter‐category fit with little evidence for load effects. The results suggest that category activation is sensitive to inter‐category fit and that fit detection is robust against moderate amounts of cognitive load. Copyright © 2005 John Wiley & Sons, Ltd.     

Psychotherapie bei Patienten mit koronarer Herzkrankheit

Psychosomatisch-somatopsychische Interaktionen sind bei Koronarpatienten häufig und verlaufsrelevant. Seit den 1960er-Jahren kommen daher psychosoziale Interventionen zur Verbesserung von Befinden und Krankheitsverlauf zum Einsatz. Neben psychoedukativen und unspezifisch-supportiven Angeboten oder Entspannungsverfahren finden sich auch explizit psychotherapeutische Interventionen. Diese beabsichtigen einerseits, durch Reduktion von Stressbelastungen und Förderung gesundheitsbewusster Verhaltensweisen den Krankheitsverlauf zu verlangsamen. Zuletzt wurde zudem auch die Psychotherapie psychischer Komorbiditäten untersucht. Hier spielt die prognostisch relevante Depression eine besondere Rolle. In der größten Psychotherapiestudie bei Koronarpatienten, der ENRICHD-Studie, wurde bei 2481 Infarktpatienten mit Depression oder mangelnder sozialer Unterstützung eine maximal halbjährige kognitive Verhaltenstherapie eingesetzt. Diese führte zur deutlichen Besserung der Depressivität; bei hoher Spontanremissionsrate in der Kontrollgruppe blieb der Nettoeffekt jedoch bescheiden. Eine Lebensverlängerung wurde in der Interventionsgruppe nicht erreicht. Die Befundlage verlangt differenzielle Indikationsstellungen und behandlungstechnische Weiterentwicklungen der therapeutischen Konzepte bzw. die Erprobung anderer Therapieverfahren, erlaubt jedoch noch keine evidenzbasierte allgemeine Behandlungsempfehlung. Therapieentscheidungen stützen sich heute auf die Würdigung des Einzelfalls, auf gut belegte subjektiven Therapieeffekte, theoretische Annahmen über Stressbewältigungs- und Entspannungsverfahren sowie die an anderen Patientenkollektiven gewonnenen Wirksamkeitsnachweise psychotherapeutischer Verfahren. Dabei sind generell eine Beachtung der kardialen Situation und der typischen Problembereiche der koronaren Herzkrankheit (KHK) sowie eine gute Abstimmung mit den somatischen Behandlern wichtig.     

作为权宜道德的技术伦理

通过对四种传统伦理观在面对高新技术时的困惑、局限及其根源的分析,提出了以亚里士多德的智慧伦理和笛卡儿的权宜道德为基础,在尊重遗产价值和选择价值的同时,以灵活具体的道德规则代替抽象不变的道德原则和规范.发展了7条解决技术伦理问题的战略,并且强调技术伦理的有效贯彻关键在于将技术伦理变为制度伦理.     

Cooperative problem solving in giant otters (<Emphasis Type="Italic">Pteronura brasiliensis</Emphasis>) and Asian small-clawed otters (<Emphasis Type="Italic">Aonyx cinerea</Emphasis>)

Cooperative problem solving has gained a lot of attention over the past two decades, but the range of species studied is still small. This limits the possibility of understanding the evolution of the socio-cognitive underpinnings of cooperation. Lutrinae show significant variations in socio-ecology, but their cognitive abilities are not well studied. In the first experimental study of otter social cognition, we presented two species—giant otters and Asian small-clawed otters—with a cooperative problem-solving task. The loose string task requires two individuals to simultaneously pull on either end of a rope in order to access food. This task has been used with a larger number of species (for the most part primates and birds) and thus allows for wider cross-species comparison. We found no differences in performance between species. Both giant otters and Asian small-clawed otters were able to solve the task successfully when the coordination requirements were minimal. However, when the temporal coordination demands were increased, performance decreased either due to a lack of understanding of the role of a partner or due to difficulty inhibiting action. In conclusion, two species of otters show some ability to cooperate, quite similar to most other species presented with the same task. However, to draw further conclusions and more nuanced comparisons between the two otter species, further studies with varied methodologies will be necessary.     

Temporal dynamics of awareness for facial identity revealed with ERP

In this study, we investigated the scalp recorded event-related potential (ERP) responses related to visual awareness. A backward masking procedure was performed while high-density EEG recordings were carried out. Subjects were asked to detect a familiar face, presented at durations that varied parametrically between 16 and 266 ms. ERPs were computed and awareness was assessed using a sensitivity measure from signal detection theory (d'). Modifications in the electrical scalp topographies were found to reflect visual awareness of the stimulus. In particular, an early map topography was found to emerge progressively around 230 ms, showing a pattern of increase similar to the measure of visual awareness. This was followed by an increase in duration of a second, P300-like map. Source localisation for the early awareness-related topography revealed the activation of a distributed network of brain areas including frontal and temporo-occipital regions. Our results suggest that conscious experience emerges in parallel with the activation of a specific neural network that occurs in a time window beginning from about 200 ms.     

Hospital Chaplaincy Across Denominational, Cultural and Religious Borders: Observations from the German Context

The essay investigates the possibilities and limitations ofcross-denominational, intercultural and inter-religious hospitalchaplaincy. With a view to the actual situation of hospitalchaplaincy in Germany and the economic, social and theologicalconstraints under which it offers its services, the author concludes,that the different Christian denominations must organizationallycooperate and share their work if such services are to survivethe growing pressures. Constructivist cognition theory is invokedfor analyzing the hermeneutical and theological implicationsof inter-denominational, intercultural and inter-religious pastoralcare and counselling. A Lutheran interpretation of the Trinitariandogma provides a foundational frame of reference.     

Combined reasoning by automated cooperation

Different reasoning systems have different strengths and weaknesses, and often it is useful to combine these systems to gain as much as possible from their strengths and retain as little as possible from their weaknesses. Of particular interest is the integration of first-order and higher-order techniques. First-order reasoning systems, on the one hand, have reached considerable strength in some niches, but in many areas of mathematics they still cannot reliably solve relatively simple problems, for example, when reasoning about sets, relations, or functions. Higher-order reasoning systems, on the other hand, can solve problems of this kind automatically. But the complexity inherent in their calculi prevents them from solving a whole range of problems. However, while many problems cannot be solved by any one system alone, they can be solved by a combination of these systems.We present a general agent-based methodology for integrating different reasoning systems. It provides a generic integration framework which facilitates the cooperation between diverse reasoners, but can also be refined to enable more efficient, specialist integrations. We empirically evaluate its usefulness, effectiveness and efficiency by case studies involving the integration of first-order and higher-order automated theorem provers, computer algebra systems, and model generators.     

Effects of race on responses and response latencies in the weapon identification task: a test of six models

The authors consider six models of underlying process in the weapon identification task: The first two are response-time extensions of signal detection models; the last four, of the process dissociation model. Predictions for accuracy data, correct response latencies, and false response latencies are used to discriminate between models. In the present study, racial bias in responses and correct response latency was replicated. New findings were that the direction of bias was reversed in error latency and that errors were faster than correct responses. These findings rule out four models, in particular, the idea that race biases early perception and interpretation of targets. Implications for reducing errors in the weapon identification task and possibilities of discriminating between the remaining two models are discussed.     

Evidence for serial coercion: a time course analysis using the visual-world paradigm

Metonymic verbs like start or enjoy often occur with artifact-denoting complements (e.g., The artist started the picture) although semantically they require event-denoting complements (e.g., The artist started painting the picture). In case of artifact-denoting objects, the complement is assumed to be type shifted (or coerced) into an event to conform to the verb's semantic restrictions. Psycholinguistic research has provided evidence for this kind of enriched composition: readers experience processing difficulty when faced with metonymic constructions compared to non-metonymic controls. However, slower reading times for metonymic constructions could also be due to competition between multiple interpretations that are being entertained in parallel whenever a metonymic verb is encountered. Using the visual-world paradigm, we devised an experiment which enabled us to determine the time course of metonymic interpretation in relation to non-metonymic controls. The experiment provided evidence in favor of a non-competitive, serial coercion process.