An investigation of traumatic life events and obsessive-compulsive disorder

Obsessive-compulsive disorder (OCD), like most other psychiatric disorders, is suspected of being influenced by an interaction between life events and genes, both with regard to onset and course of illness. To date, no specific genes have been identified as playing a frequent role, and only a relatively few empirical studies have assessed the association between stressful life events (SLEs) and OCD. The present study builds on past research by examining the potential contributions from traumatic life events (TLEs) on the severity and symptom features in 265 individuals with Structured Clinical Interview for DSM-IV (SCID)-diagnosed OCD. Of these participants 54% endorsed having experienced at least one TLE in their life time. The presence of one or more TLEs was associated with increased OCD symptom severity. This relationship remained significant despite controlling for key variables including age, OCD age-of-onset, comorbidity, and depressive symptoms. In addition, obsessions/checking and symmetry/ordering were two of four symptom factors that were specifically associated with the occurrence of TLEs. These results are generally supportive of a pathoplastic relationship between TLEs and OCD symptomatology and thus suggest the need for greater systematic consideration of life stresses in research focused on the nature and treatment of OCD.     

Middle school student perceptions of school climate: Examining protective functions on subsequent adjustment problems

The present study examined the roles of student perceptions of four aspects of school climate (friction, cohesion, competition among students, and satisfaction with classes) as moderators of the relations between effortful control and subsequent conduct problems and depressive symptoms. Participants were 488 10-to-14-year old students involved in two waves, with one year between each wave, of a study. Hierarchical regression analyses indicated that high levels of perceived friction predicted more subsequent conduct problems and depressive symptoms, even after baseline levels of these problems were partialled out. Low levels of effortful control also elevated risk for subsequent conduct problems. However, perceptions of the school as high in cohesion offset the risk associated with low levels of effortful control. Perceived satisfaction with classes also offset this risk, but only for females. Contrary to expectations, student perceptions of school climate did not interact with effortful control to predict subsequent depressive symptoms.     

Subtyping as a knowledge preservation strategy in category learning

Subtyping occurs when atypical examples are excluded from consideration in judging a category. In three experiments, we investigated whether subtyping can influence category learning. In each experiment, participants learned about a category where most, but not all, of the exemplars corresponded to a theme. The category structure included a subtyping dimension, which had one value for theme-congruent exemplars and another for exception exemplars. On the basis of work by Hayes, Foster, and Gadd (2003) and studies on social stereotyping, we hypothesized that this subtyping dimension would enable the participants to discount the exception exemplars, thereby facilitating category learning. Contrary to expectations, we did not find a subtyping effect with traditional category-learning procedures. By introducing the theme prior to learning, however, we observed increased effects on typicality ratings (Experiment 1) and facilitated learning of the category (Experiment 2). Experiment 3 provided direct evidence that introducing the theme prior to learning enhanced the subtyping effect and provided support for a knowledge-gating explanation of subtyping. We conclude that subtyping effects are strongest on already-learned concepts and that subtyping is unlikely to aid in the learning of new concepts, except in particular circumstances.     

Combat-related post-traumatic stress disorder: a case report using virtual reality exposure therapy with physiological monitoring.

The current report summarizes a case study from an Office of Naval Research (ONR) funded project to compare the effects of virtual reality graded exposure therapy (VRGET) with cognitive behavioral group therapy in active-duty corpsmen. Details of the collaborative program between the Virtual Reality Medical Center (VRMC) and Naval Medical Center San Diego (NMCSD) will be discussed.     

Relationships Between Attitudes Toward Organizations and Performance Appraisal Systems and Rating Behavior

Data collected in seven separate samples in three countries (the USA, Canada and Israel) were used to examine the relationships between perceptions of one’s organization (climate, commitment), beliefs about appraisal systems (self‐efficacy, uses of appraisal) and raters’ orientations to appraisal systems (confidence and comfort) and specific rating behaviors. We obtained good fits for structural models suggesting that attitudes and beliefs accounted for substantial variance in raters’ likelihood of giving high or low ratings, willingness to discriminate good from poor performers, and willingness to discriminate among various aspects of job performance when completing actual performance ratings. Proximal attitudes and beliefs (i.e., those directly related to the performance appraisal system) appear to have stronger links to rating behavior than do more distal attitudes (i.e., attitudes toward the organization in general).     

Near-Death Experiences in Thailand

Near-death experiences (NDEs) in Thailand do not demonstrate the episodes most noted in those collected in the West, but they do show consistent features. I argue that these features, including harbingers of death, visions of hell, the Lord of the underworld, and the benefits of making donations to Buddhist monks and temples, can be understood within the framework of beliefs and customs unique to Southeast Asia. The simplest explanation is that the phenomenology of NDEs at least in part fulfills the individuals' expectations of what they will experience at death. These expectations are most often derived from the experiencer's culture, subculture, or mix of cultures. Culture-bound expectations are, in turn, most often derived from religion. One case, quoted at length, shows features that suggest that the individual was experiencing stress as a result of living in both Thai and Chinese cultures. Although the phenomenology of Thai NDEs is at variance from those in the West, the typical episodes that appear in each seem to follow a comparable sequencing. This similarity in structure suggests that NDEs in both cultures have a common function.     

Anchoring Relationships at Work: High‐Quality Mentors and Other Supportive Work Relationships as Buffers to Ambient Racial Discrimination

Applying a unifying theoretical framework of high‐quality work relationships, we conducted a set of 3 complementary studies that examined whether high‐quality mentoring relationships can buffer employees from the negative effects of ambient discrimination at work. Integrating relational mentoring with relational systems theory, we first examined whether the presence of a high‐quality mentoring relationship buffers employees in a sample of 3,813 workers. In support of the “mentors‐as‐buffers” hypothesis, we found that employees who witnessed or were aware of racial discrimination at work had lower organizational commitment than those not exposed, but employees with high‐quality mentoring relationships experienced less loss of commitment than those lacking mentors. We then examined the specific buffering behaviors used by mentors in high‐quality relationships and whether these behaviors were effective for other work relationships and outcomes. Applying Kahn's typology, we developed and validated a measure of high‐quality relational holding behaviors in a sample of 262 workers. Using this measure in a third sample of 557 workers, we found that mentors buffer by providing holding behaviors, but we did not find this buffering effect when supervisors or coworkers provided holding behaviors. This potent mentor buffering effect held across a range of outcomes, including organizational commitment, physical symptoms of stress, insomnia, and stress‐related absenteeism. These studies suggest that mentoring may be a singularly effective relationship that offers a safe harbor for employees faced with ambient discrimination at work.     

Psychological Experiences Associated with Robotic Chair Massage: A Pilot Study

This pilot study examined 186 healthy adults who received a 20-min full-body massage in a robotic massage chair. The majority of the participants rated the experience to be highly pleasurable, and this evaluation was influenced by age and life satisfaction. Large changes in pre- to post-massage symptoms of anxiety and tranquillity were also observed. These preliminary findings support the psychological effectiveness of robotic chair massage which can be readily used by lay people and professionals alike to promote mental health and well-being.     

Visual feature vs. conjunction searches as a robust manipulation of perceptual load

It has previously been suggested that Lavie’s Perceptual Load Theory can be assessed using feature vs. conjunction search tasks. In this study we manipulated load using a novel paradigm which retains the key features of both classic Load Theory and Feature Integration Theory paradigms. This new paradigm has the advantage of an inbuilt manipulation check which is necessary for future research to translate Load Theory to applied contexts. Across five experiments, we demonstrate the robust nature of this paradigm, which functions with extended display times, large, complex stimuli and when conditions are intermixed on a trial-by-trial basis. We also rule out dilution as a possible cause of these results. The results of all five experiments provide evidence that the feature vs. conjunction search dichotomy is an effective means of imposing low and high perceptual load while controlling for working memory load.