Religion and Suicide

Religion impacts suicidality. One’s degree of religiosity can potentially serve as a protective factor against suicidal behavior. To accurately assess risk of suicide, it is imperative to understand the role of religion in suicidality. PsycINFO and MEDLINE databases were searched for published articles on religion and suicide between 1980 and 2008. Epidemiological data on suicidality across four religions, and the influence of religion on suicidality are presented. Practice guidelines are presented for incorporating religiosity into suicide risk assessment. Suicide rates and risk and protective factors for suicide vary across religions. It is essential to assess for degree of religious commitment and involvement to accurately identify suicide risk.     

Hemispheric connectivity and the visual–spatial divergent-thinking component of creativity

Background/hypothesis

Divergent thinking is an important measurable component of creativity. This study tested the postulate that divergent thinking depends on large distributed inter- and intra-hemispheric networks. Although preliminary evidence supports increased brain connectivity during divergent thinking, the neural correlates of this characteristic have not been entirely specified. It was predicted that visuospatial divergent thinking would correlate with right hemisphere white matter volume (WMV) and with the size of the corpus callosum (CC).

Methods

Volumetric magnetic resonance imaging (MRI) analyses and the Torrance Tests of Creative Thinking (TTCT) were completed among 21 normal right-handed adult males.

Results

TTCT scores correlated negatively with the size of the CC and were not correlated with right or, incidentally, left WMV.

Conclusions

Although these results were not predicted, perhaps, as suggested by Bogen and Bogen (1988), decreased callosal connectivity enhances hemispheric specialization, which benefits the incubation of ideas that are critical for the divergent-thinking component of creativity, and it is the momentary inhibition of this hemispheric independence that accounts for the illumination that is part of the innovative stage of creativity. Alternatively, decreased CC size may reflect more selective developmental pruning, thereby facilitating efficient functional connectivity.     

The virtual haptic display: A device for exploring 2-D virtual shapes in the tactile modality

In order to understand better the processes involved in the perception of shape through touch, someelement of control is required over the nature of the shape presented to the hand and the presentation timing. To that end, we have developed a cost-effective, computer-controlled apparatus for presenting haptic stimuli using active touch, known as a virtual haptic display (VHD). The operational principle behind this device is that it translates black and white visual images into topographic, 2-D taxel (tactile pixel) arrays, along the same principle using in Braille letters. These taxels are either elevated or depressed at any one time representing white and black pixel colors of the visual image, respectively. To feel the taxels, the participant places their fingers onto a carriage which can be moved over the surface of the device to reveal a virtual shape. We conducted two experiments and the results show that untrained participants are able to recognize different, simple and complex, shapes using this apparatus. The VHD apparatus is therefore ideal at presenting 2-Dshapes through touch alone. Moreover,this device and its supporting software can also be used for presenting computer-controlled stimuli in cross-modal experiments.     

Manipulating establishing operations to verify and establish stimulus control during mand training

Acquisition of verbal behavior is a major goal of interventions for children with developmental disabilities. We evaluated the effectiveness of manipulation of an establishing operation for functional discriminated mands. Four individuals with developmental disabilities participated in a training procedure designed to teach two separate mands for two separate preferred items. Participants were taught to mand using picture cards. Following training, the manipulation of the establishing operation was used to assess and establish discriminated manding. This manipulation involved providing free access to one of the preferred items, such that there should be no motivation to ask for it, while motivation to ask for the other item remained in place. Three of the 4 participants acquired discriminated manding using topographically similar responses (picture cards). One participant did not acquire a discriminated mand until topographically distinct mands were taught (vocal and picture card). Results suggest that discrimination training is not necessarily sufficient to teach discriminated manding when more than one picture card showing preferred items is used. In addition, manipulation of the establishing operation served as an appropriate assessment tool for the verification of discriminated manding as well as a possible training tool to establish discriminated manding.     

Neighborhood crime as a predictor of individual differences in emotional processing and regulation

Emerging research suggests that early exposure to environmental adversity has important implications for the development of brain regions associated with emotion regulation, yet little is known about how such adversity translates into observable differences in children's emotion‐related behavior. The present study examines the relationship between geocoded neighborhood crime and urban pre‐adolescents' emotional attention, appraisal, and response. Results indicate that living in a high‐crime neighborhood is associated with greater selective attention toward negatively valenced emotional stimuli on a dot probe task, less biased appraisal of fear on a facial identification task, and lower rates of teacher‐reported internalizing behaviors in the classroom. These findings suggest that children facing particularly high levels of environmental threat may develop different regulatory processes (e.g. greater use of emotional suppression) than their peers from low‐crime neighborhoods in order to manage the unique stressors and social demands of their communities.