An experimental manipulation of metacognition: A test of the metacognitive model of obsessive-compulsive symptoms

The metacognitive model of obsessive-compulsive symptoms [Wells, A. (1997). Cognitive therapy of anxiety disorders: A practice manual and conceptual guide. Chichester, UK: Wiley] assigns a necessary causal role to metacognitive beliefs in the development of symptoms. The current study tested the model by evaluating the effects of experimentally manipulating such beliefs. A 2 × 2 factorial design was used. Thirty-two students with high and 32 students with low obsessional symptoms were subject to an experimental (metacognitive belief induction) or control (no metacognitive belief induction) condition. All participants underwent fake EEG recordings and were informed that the EEG could sense hypothalamus activity caused by having thoughts related to drinking. Participants in the experimental condition were told that if such thoughts were detected they may be exposed to an aversive noise. Controls were told that they may hear an aversive noise but this would be unrelated to the thoughts they had. Results showed a significant interaction effect between level of obsessional symptoms and belief induction. Analysis of this effect demonstrated that in the high obsession group, participants in the experimental condition had significantly more intrusions about drinking, time spent thinking about these intrusions and discomfort from them, than controls. There were also significant main effects on some measures, such as effort to control intrusions about drinking, with higher scores in the experimental condition irrespective of levels of obsessional symptoms. Results support the metacognitive model.     

Witness Vetting: What Determines Detectives' Perceptions of Witness Credibility?

During the course of a criminal investigation witness vetting, a detective's process of determining the credibility and weight of witness information, can lead to errors in an investigation that can go virtually unchallenged. Witness confidence, opportunity to view, and type of information proffered were examined in relation to detective inferences about witness reliability, accuracy, and probable cause to arrest. Experiment 1 involved 39 sworn law enforcement officers, and experiment 2 involved 43 sworn law enforcement officers and 86 mock detectives. Participants viewed a digital recording depicting a witness describing a gas station robbery (Experiment 1) or a campus mugging (Experiment 2). Witness confidence and detectives' inferences about culprit information influenced the vetting process and lent credibility to a confident witness whose accuracy was objectively unknown. Furthermore, the evidence indicates that sworn law enforcement are comparable with untrained observers in their use of social inference cues (i.e. confidence) in determining witness credibility; however, social inference can be assuaged by the rational, rule‐governed, decision framework established for witness vetting. Social inference processes inherent in the detective‐witness dyad is influenced by legal procedures in vetting witness information. Copyright © 2013 John Wiley & Sons, Ltd.     

Reasons for Declining Preconception Expanded Carrier Screening Using Genome Sequencing

Genomic carrier screening can identify more disease-associated variants than existing carrier screening methodologies, but its utility from patients’ perspective is not yet established. A randomized controlled trial for preconception genomic carrier screening provided an opportunity to understand patients’ decisions about whether to accept or decline testing. We administered a survey to potential genomic carrier screening recipients who declined participation (N = 240) to evaluate their reasons for doing so. Two thirds of women declined participation. We identified major themes describing reasons these individuals declined to participate; the most common were time limitation, lack of interest, not wanting to know the information, and potential cause of worry or anxiety. Most women eligible for genomic carrier screening indicated that their reasons for opting out were due to logistical issues rather than opposing the rationale for testing. As expanded carrier screening and genomic sequencing become a more routine part of clinical care, it is anticipated there will be variable uptake from individuals for this testing. Thus, the advancement of clinical carrier screening from single genes, to expanded screening panels, to an exome- or genome-wide platform, will require approaches that respect individual choice to receive genetic testing for reproductive risk assessment.     

The religion paradox: if religion makes people happy, why are so many dropping out?

As we estimate here, 68% of human beings--4.6 billion people--would say that religion is important in their daily lives. Past studies have found that the religious, on average, have higher subjective well-being (SWB). Yet, people are rapidly leaving organized religion in economically developed nations where religious freedom is high. Why would people leave religion if it enhances their happiness? After controlling for circumstances in both the United States and world samples, we found that religiosity is associated with slightly higher SWB, and similarly so across four major world religions. The associations of religiosity and SWB were mediated by social support, feeling respected, and purpose or meaning in life. However, there was an interaction underlying the general trend such that the association of religion and well-being is conditional on societal circumstances. Nations and states with more difficult life conditions (e.g., widespread hunger and low life expectancy) were much more likely to be highly religious. In these nations, religiosity was associated with greater social support, respect, purpose or meaning, and all three types of SWB. In societies with more favorable circumstances, religiosity is less prevalent and religious and nonreligious individuals experience similar levels of SWB. There was also a person-culture fit effect such that religious people had higher SWB in religious nations but not in nonreligious nations. Thus, it appears that the benefits of religion for social relationships and SWB depend on the characteristics of the society.