A photo,a suggestion,a false memory

We examined the effect of photographs on children's memories for events that did and did not happen. Over three interviews, 10‐year olds saw three true photos and one false photo. Half the children saw a doctored photo of themselves and other family members in a hot air balloon, while the remaining half saw only the hot air balloon. At each interview, children reported what they could remember about each event, rated their confidence that the events really happened and rated how much they could remember. Children who saw the photo showing themselves in the balloon developed more false memories than those who saw only the balloon, but when children in either condition developed false memories, they were equally confident that the event was real. These data highlight a potential problem with the use of photographs as tools in therapy. Copyright © 2007 John Wiley & Sons, Ltd.     

Eyewitness memory following discussion: using the MORI technique with a Western sample

Researchers studying memory conformity have made significant advances in our understanding of the phenomenon, but have used methods with significant shortcomings. Mori's three‐stage method addresses many of these concerns. To date the technique has not been replicated on a Western sample. We present such a study, and discuss two significant improvements to Mori's method. We found that subjects were more likely to report the correct answer for non‐discussed critical details than discussed critical details. Our data also suggested that when subjects agreed with their partner's information during the discussion, they did so because they thought that information was accurate; only a minority of the time did they go along with their partner during discussion and revert to their own answer at the test. We draw parallels between the unknown mechanisms driving memory conformity effects and the search for mechanisms driving the misinformation effect two decades ago. Copyright © 2007 John Wiley & Sons, Ltd.     

On how a child's awareness of thinking informs explanations of thought insertion

Theories of thought insertion have tended to favour either the content of the putatively alien thought or some peculiarity within the experience itself as a means of explaining why the subject differentiates one thought from another in terms of personal ownership. There are even accounts that try to incorporate both of these characteristics. What all of these explanations share is the view that it is unexceptional for us to experience thought as our own. The aim of this paper is to consider the means by which this awareness of the myness of thought occurs. Why is it that I, as the subject of thought, typically experience a thought as mine? Using research which investigates the development of a child's awareness of the act of thinking, I will evaluate leading explanations of thought insertion. It is my contention that by understanding the means by which the awareness of one's ownership of thought develops, we can better assess explanations of thought insertion; and whilst, at present, no theory is fully able to explain the condition, the incorporation of developmental research suggest that we should favour one in particular.     

Social psychology and social networks: Individuals and social systems

Social psychology and social network research are both centrally concerned with human sociality. Despite some historically significant interactions between the two, these areas of investigation have not been usefully deployed together in recent research endeavours. The present paper attempts to bring out some points of both theoretical and methodological contentions, to characterize the gap between them, to traverse briefly the trajectories of their historical development, and to provide some concrete instances of these differences. Intellectual resources available to Asian social psychology are reviewed, which may help bridge the gap between the two areas of research. We conclude by calling for a greater integration of social psychology and social network perspectives in future research.     

Photographs can distort memory for the news

In this experiment, we ask whether photographs can lead to false memories for elements of a newspaper story. Participants played the role of a newspaper editor, identifying minor typographical errors in three newspaper articles and marking the text where they thought an accompanying photo should be placed when the story was printed. The critical article described a hurricane's effects on a coastal region; the story made no mention of personal injury or death. We varied the accompanying critical photo: participants saw either a photo of a village before the hurricane hit or after. In a later memory test, both ‘Before’ and ‘After’ participants were equally good at correctly recognising old statements and rejecting weak lures. However, the ‘After’ participants claimed to have read information describing death and injury 32% of the time. By comparison, ‘Before’ participants claimed to have read these statements only 9% of the time. Copyright © 2007 John Wiley & Sons, Ltd.     

Increased brain serotonin turnover in panic disorder patients in the absence of a panic attack: reduction by a selective serotonin reuptake inhibitor

Since the brain neurotransmitter changes characterising panic disorder remain uncertain, we quantified brain noradrenaline and serotonin turnover in patients with panic disorder, in the absence of a panic attack. Thirty-four untreated patients with panic disorder and 24 matched healthy volunteers were studied. A novel method utilising internal jugular venous sampling, with thermodilution measurement of jugular blood flow, was used to directly quantify brain monoamine turnover, by measuring the overflow of noradrenaline and serotonin metabolites from the brain. Radiographic depiction of brain venous sinuses allowed differential venous sampling from cortical and subcortical regions. The relation of brain serotonin turnover to serotonin transporter genotype and panic disorder severity were evaluated, and the influence of an SSRI drug, citalopram, on serotonin turnover investigated. Brain noradrenaline turnover in panic disorder patients was similar to that in healthy subjects. In contrast, brain serotonin turnover, estimated from jugular venous overflow of the metabolite, 5-hydroxyindole acetic acid, was increased approximately 4-fold in subcortical brain regions and in the cerebral cortex (P < 0.01). Serotonin turnover was highest in patients with the most severe disease, was unrelated to serotonin transporter genotype, and was reduced by citalopram (P < 0.01). Normal brain noradrenaline turnover in panic disorder patients argues against primary importance of the locus coeruleus in this condition. The marked increase in serotonin turnover, in the absence of a panic attack, possibly represents an important underlying neurotransmitter substrate for the disorder, although this point remains uncertain. Support for this interpretation comes from the direct relationship which existed between serotonin turnover and illness severity, and the finding that SSRI administration reduced serotonin turnover. Serotonin transporter genotyping suggested that increased whole brain serotonin turnover most likely derived not from impaired serotonin reuptake, but from increased firing in serotonergic midbrain raphe neurons projecting to both subcortical brain regions and the cerebral cortex.     

Psychotropic placebos create resistance to the misinformation effect

Can a placebo for a psychotropic drug help participants resist the misinformation effect? To answer this question, we gave participants a mixture of baking soda and water and told half of them that the mixture was a cognition-enhancing drug called R273 and told the other half that it was an inactive version of the drug. Shortly thereafter, all participants took part in a three-stage misinformation experiment. Compared with participants who were told that they had taken the placebo, the participants who were told that they had taken the drug reported improved cognitive abilities and were less susceptible to the misinformation effect. We provide sourcemonitoring and mindfulness accounts of our findings.     

Consumer sophistication and the role of emotion on satisfaction judgments within credence services

• Evidence which demonstrates a link between the affective dimension and satisfaction in a tangible product based context is well documented. However, when placed in a credence service context the role of Affect becomes more complex. Previous research in this field has assumed consumer homogeneity when there is increasing evidence of consumer heterogeneity. This research attempts to address this by examining affective reactions to service encounters between two groups of respondents, one with the ability to make performance assessments about the service and one without. Findings suggest consumers of differing sophistication will vary in the way they form expectation and performance assessments about the technical, functional and affective components of credence services and that consumer sophistication may have a moderating influence on affective reactions evoked. This in turn has implications for the design and delivery of service offerings within such contexts.

Copyright © 2007 John Wiley & Sons, Ltd.