Suppression of attentional bias in PTSD

Sixty combat veterans with posttraumatic stress disorder performed an emotional Stroop task under 1 of 4 contextual conditions designed to test theoretical explanations for an attentional bias suppression effect. Results revealed that when the emotional Stroop task was performed under conditions involving a future threat of either watching a combat video or giving a speech, attentional bias was inhibited. There was limited support for the prediction that the suppression effect was strongest when stressor content matched word content on the Stroop. In contrast to participants in the threat conditions, veterans who believed that they would receive additional compensation for speeded color naming or who believed that they would have no other experimental demands were slower when color naming combat-threat words. Potential theoretical explanations of the findings are discussed.     

Effects of model-based and memory-based processing on speed and accuracy of grammar string generation

Learners are able to use 2 different types of knowledge to perform a skill. One type is a conscious mental model, and the other is based on memories of instances. The authors conducted 3 experiments that manipulated training conditions designed to affect the availability of 1 or both types of knowledge about an artificial grammar. Participants were tested for both speed and accuracy of their ability to generate letter sequences. Results indicate that model-based training leads to slow accurate responding. Memory-based training leads to fast, less accurate responding and highest achievement when perfect accuracy was not required. Evidence supports participants' preference for using the memory-based mode when exposed to both types of training. Finally, the accuracy contributed by model-based training declined over a retention interval.     

Take a closer look: emotion modifies the boundary extension effect

Evidence has accumulated showing that central aspects of negative emotional scenes are remembered better than equivalent aspects of nonemotional scenes. Previous work, and an attentional account of these findings, led the authors to predict that anxiety-prone individuals would remember extremely negative emotional pictures as if seen from a closer perspective (i.e., with a less extended background) than other pictures. Findings showed that boundary extension was indeed reduced in high-trait-anxious individuals for very negative scenes, and this was more generally true for arousing scenes, with the exception of those with positive content. These findings are taken to be support for the view that attending to central aspects of emotionally arousing scenes can restrict the usual extended impression of surrounding space.     

Imagery and interpretations in social phobia: support for the combined cognitive biases hypothesis

Cognitive-behavioral models of clinical problems typically postulate a role for the combined effects of different cognitive biases in the maintenance of a given disorder. It is striking therefore that research has tended to examine cognitive biases in isolation rather than assessing how they work together to maintain psychological dysfunction. The combined cognitive biases hypothesis presented here suggests that cognitive biases influence each another and can interact to maintain a given disorder. Furthermore, it is proposed that the combined effects of cognitive biases may have a greater impact on sustaining a given disorder than if the biases operated in isolation. The combined cognitive biases hypothesis is examined in relation to imagery and interpretation in social phobia. Individuals with social phobia experience negative images of themselves performing poorly in social situations, and they also interpret external social information in a less positive way than those without social anxiety. Evidence of a reciprocal relationship between imagery and interpretations is presented, and the mechanisms underlying the combined effects are discussed. Clinical implications and the potential utility of examining the combined influence of other cognitive biases are highlighted.     

Induced biases in emotional interpretation influence stress vulnerability and endure despite changes in context

Previous research has shown that interpretation biases can be experimentally induced and endure for 24 hours. In two experiments, we show that induced biases not only persist but survive changes in environmental context, including transferring to different rooms with different experimenters. In one experiment, training and testing materials were also presented in different sensory modalities without significantly reducing the magnitude of the induced bias. Furthermore, we found evidence of changes in emotional vulnerability, congruent with the direction of induced bias, which also persisted for 24 hours. Together with earlier results, these findings show that induced biases generalize over contexts and have persisting emotional consequences, suggesting that appropriately adapted training methods may contribute to developing therapeutic techniques within clinical settings.     

Towards an experimental cognitive science of CBT

The increasing focus on cognitive processes as therapeutic targets has not yet been matched by a cognitive science base sufficiently developed to guide clinical practice. It is argued that the papers in this special issue represent evidence of progress towards this desirable goal. Collectively, they illustrate research techniques aimed at specifying the nature of cognitive operations likely to increase the risk of emotional disorders, and the introduction of experimental methods for their modification. Emergent themes include the suggestion that negative thought content, such as that experienced in rumination, is an unintended but maladaptive product of underlying biases in selective processing. Despite often operating outside awareness, this biased processing can be changed, for example by strengthening incompatible alternatives. Beyond providing evidence for the causal role of selective cognitive processes, this approach offers a potentially powerful method for investigating and developing new therapeutic tools.     

From research to practice: The first tentative steps

This article traces the history of the Somerset Spirituality Project as it moved from the research findings of Foskett et al. (2003) and Macmin and Foskett (2003) to the application of their findings in practice. It summarizes the results of the research, the attempts to publicize these and to promote better practice within the mental health services and local religious groups. It records the developments already undertaken or planned, the resistance to these encountered along the way and the sacrifices made by those most intimately involved. This is set within a Christian Liberation Theology's analysis of social and political systems, its bias to the poor and their understanding of the human drive to health of mind and soul.