Anticipatory models in gaze control: a developmental model

Infants gradually learn to predict the motion of moving targets and change from a strategy that mainly depends on saccades to one that depends on anticipatory control of smooth pursuit. A model is described that combines three types of mechanisms for gaze control that develops in a way similar to infants. Initially, gaze control is purely reactive, but as the anticipatory models become more accurate, the gain of the pursuit will increase and lead to a larger fraction of smooth eye movements. Finally, a third system learns to predict changes in target motion, which will lead to fast retuning of the parameters in the anticipatory model.     

Professional Discretion and Accountability in the Welfare State

The discretionary powers of welfare state professionals are in tension with the requirements of the democratic Rechtsstaat. Extensive use of discretion can threaten the principles of the rule of law and relinquish democratic control over the implementation of laws and policies. These two tensions are in principle ineradicable. But does this also mean that they are impossible to come to grips with? Are there measures that may ease these tensions? We introduce an understanding of discretion that adds an epistemic dimension (discretion as a mode of reasoning) to the common structural understanding of discretion (an area of judgment and decision). Accordingly we distinguish between structural and epistemic measures of accountability. The aim of the former is to constrain discretionary spaces or the behaviour within them while the aim of the latter is to improve the quality of discretionary reasoning. The focus in this article is on epistemic measures that are internally related to the main characteristic of accountability, namely justified use of discretionary power.     

Brief report: sudden gains in cognitive-behavioral group therapy and group psychotherapy for social anxiety disorder among college students

The present study examined sudden gains (SGs; large symptom improvements between adjacent treatment sessions) and its association with treatment outcome in a randomized-controlled trial comparing cognitive-behavioral group therapy (CBGT) versus group psychotherapy (GPT; designed to incorporate only non-specific factors) for social anxiety disorder (SAD). SAD symptoms were assessed after each treatment session in a sample of 45 college students. Independent assessors evaluated symptom severity at baseline, post-treatment and follow-up. A total of 10 (22.2%) participants experienced SGs during treatment. No differences were found in symptom improvement at post-treatment or follow-up between individuals with and without SGs. SGs appeared at similar rates across both treatments but were associated with greater improvements at post-treatment and follow-up in GPT compared to CBGT. Majority of SGs in CBGT occurred early in treatment before the provision of specific treatment techniques. These results suggest that non-specific treatment factors may be important in promoting SGs.     

Die Behandlung von Borderline-Persönlichkeitsstörungen

Zusammenfassung Bereits 1681 beklagte sich ein englischer Arzt in einem Brief über Patienten, die ohne jedes Ma? jene lieben, die sie alsbald ohne jeden Grund hassen würden. Weiterhin seien pl?tzliche Ausbrüche von Wut, Schmerz, Angst oder ?hnlichen Emotionen zu beobachten. Mit dieser frühen Beschreibung typischer Borderline-Symptome wird die Darstellung der Entwicklung der Theorie der Borderline-St?rung von den Anf?ngen bis heute eingeleitet. Vor diesem Hintergrund werden der Stand der Diagnostik und die derzeit wichtigen Behandlungskonzepte umrissen, und zwar die psychodynamischen, verhaltenstherapeutischen und klientenzentrierten Ans?tze. Es wird dargelegt, welche Antworten es auf die Frage gibt, was das angemessene therapeutische Setting ist, insbesondere mit Blick auf station?re Behandlungskonzepte. Die vorliegenden empirischen Studien best?tigen die Wirksamkeit von Psychotherapie bei Borderline-St?rungen. Die geringe Zahl der Studien belegt aber auch die Schwierigkeit der empirischen Forschung in diesem Bereich. Der abschlie?ende Ausblick in die Zukunft der Psychotherapie der Borderline-Pers?nlichkeitsst?rungen prognostiziert eine weitere Zunahme von Pers?nlichkeitsst?rungen im Spektrum psychiatrischer Erkrankungen und eine zunehmende Differenzierung des Behandlungsangebots bzw. Spezialisierung der Behandler.      

Allocation of attention in the visual field

This research investigated whether attentional resources can be simultaneously allocated to several locations in a visual display, whether the mode of processing (serial or parallel) can be switched within a trial, and the nature of the costs when attentional resources are concentrated on an invalid location. Subjects were required to determine which of two target letters was present in eight-letter circular displays. In precue conditions, a primary and a secondary target location were designated 150 ms before target onset by an indicator that varied in validity. In the control conditions no cue was provided. A second experiment verified several assumptions that had been made in interpreting the data of Experiment 1. Modifications in Jonides' (1983) two-process model were suggested in terms of a zoom lens model of attentional resources. Instead of two alternative processing modes, attentional resources are conceived as capable of distribution over the visual field, but with low resolving power, or as continuously constricting to small portions of the visual field with a concomitant increase in processing power.