Social influence on the expression of robbing and bartering behaviours in Balinese long-tailed macaques

Animal Cognition - Animals use social information, available from conspecifics, to learn and express novel and adaptive behaviours. Amongst social learning mechanisms, response facilitation occurs...     

Concurrent guidance of attention by multiple working memory items: Behavioral and computational evidence

During visual search, task-relevant representations in visual working memory (VWM), known as attentional templates, are assumed to guide attention. A current debate concerns whether only one (Single-Item-Template hypothesis; SIT) or multiple (Multiple-Item-Template hypothesis; MIT) items can serve as attentional templates simultaneously. The current study was designed to test these two hypotheses. Participants memorized two colors, prior to a visual-search task in which the target and the distractor could match or not match the colors held in VWM. Robust attentional guidance was observed when one of the memory colors was presented as the target (reduced response times (RTs) on target-match trials) or the distractor (increased RTs on distractor-match trials). We constructed two drift-diffusion models that implemented the MIT and SIT hypotheses, which are similar in their predictions about overall RTs, but differ in their predictions about RTs on individual trials. Critically, simulated RT distributions and error rates revealed a better match of the MIT hypothesis to the observed data than the SIT hypothesis. Taken together, our findings provide behavioral and computational evidence for the concurrent guidance of attention by multiple items in VWM.

     

Der Arztbrief

The right of inspection in the hospital documents, the hospital discharge report for example, is often refused to patients in in-patient psychotherapeutic treatment (psychiatry, psychosomatic and psychotherapeutic medicine) with reference to the protection of the patients themselves, their doctors or relatives. Within a systemic therapy approach patients of an acute psychosomatic care unit in a hospital the patients could inspect the report of their hospital treatment including all ?objective” and ?subjective” data of their hospital stay. The conversation with patients and their relatives about this report and modifications of the details and addresses of the report in case of patients’ objections is considered as a psychotherapeutic tool (narrative of doctor and patient) in order to improve the transparency of the diagnostic and therapeutic process and the insights in the psychosomatic mechanisms of the patient’s disease. We discuss our organisation of cocreating the hospital discharge report and our experiences with this type of patient-doctor-communication.     

Überlegungen zur theoretischen Fundierung der Disziplin Wirtschaftsinformatik, ausgehend von der allgemeinen Systemtheorie

Using general system theory as a theoretical foundation of business information systems science. The science of business information systems is looking for its theoretical foundations. In this article general system theory is adapted to serve as such a theoretical foundation. The adapted general system theory is reconstructed using the structuralistic approach to reveal the empirical claims of this theory and to analyse scientific progress in the science of business information systems. This revised version was published online in August 2006 with corrections to the Cover Date.     

Detecting anticipatory events in handwriting movements

We investigated how visual processes exploit specific anticipatory movements observed in handwriting gestures. Previous research has shown that the kinematic information contained in the downstroke of an l is exploited to predict the identity of the forthcoming letter. Here, we determined the moment at which prediction takes place. Two between-letter effects were examined: changes in size (ll vs le) and changes in rotation direction (le vs ln). Results show that with only 75% of the l downstroke trajectory (or 60% of the downstroke time) subjects are already capable of predicting the identity of the letter following the l, that is well before the end of the downstroke. Analysis also reveals that identification takes place after the presentation of the movement acceleration phase. The visual perception of motor anticipation seems to involve the detection of motor events.     

Situational countertransference

Situational Countertransference refers to those responses on the part of the therapist that are generated primarily by severe, though temporary, distresses in the therapist's personal life. It has been this writer's experience that many patients are quite attuned to the inner turmoil of their therapist, and that they will react to it in a variety of ways, which will be described. Moreover, a comparison of the level of functioning of two similar therapy groups over the course of nine months found that the group which had inadvertently learned the source of their therapist's distress functioned significantly better than the group which ostensibly knew nothing about it.     

Effects of progressive exercise on attentional focus.

To replicate 1986 work of Salmela and Ndoye on whether physical arousal from riding a stationary bicycle led to narrowing of attentional focus 17 subjects responded to a verbal 5-choice RT task while pedalling to exhaustion. Increased heart rates with increased physical stress (bicycle resistance increased) was not associated with narrowing of attention. When heart rates were 160 and 180 bpm, RTs to stimuli peripherally located to the right were slower than central ones. Further evaluation is required.