Posttraumatic Stress Disorder Symptom Clusters and the Interpersonal Theory of Suicide in a Large Military Sample

Prior studies examining posttraumatic stress disorder (PTSD) symptom clusters and the components of the interpersonal theory of suicide (ITS) have yielded mixed results, likely stemming in part from the use of divergent samples and measurement techniques. This study aimed to expand on these findings by utilizing a large military sample, gold standard ITS measures, and multiple PTSD factor structures. Utilizing a sample of 935 military personnel, hierarchical multiple regression analyses were used to test the association between PTSD symptom clusters and the ITS variables. Additionally, we tested for indirect effects of PTSD symptom clusters on suicidal ideation through thwarted belongingness, conditional on levels of perceived burdensomeness. Results indicated that numbing symptoms are positively associated with both perceived burdensomeness and thwarted belongingness and hyperarousal symptoms (dysphoric arousal in the 5‐factor model) are positively associated with thwarted belongingness. Results also indicated that hyperarousal symptoms (anxious arousal in the 5‐factor model) were positively associated with fearlessness about death. The positive association between PTSD symptom clusters and suicidal ideation was inconsistent and modest, with mixed support for the ITS model. Overall, these results provide further clarity regarding the association between specific PTSD symptom clusters and suicide risk factors.     

Skill differences in medical laboratory diagnostics

Skill differences in visual diagnostics were examined by asking novice and expert medical technologists to identify bacteria in eight Gram-stain specimens that varied in terms of diagnostically-significant features and stain quality. Verbal protocols were analyzed for knowledge of specific cell morphology and of staining properties. There were skill-related differences in visual diagnostic performance, particularly in terms of the quality of detail and number of explicit comments made for each relevant dimension. The implications of the findings for further research on the role of experience and the effects of practice/training in an applied domain such as medical technology is discussed.     

Positive Affectivity and Collective Efficacy as Moderators of the Relationship Between Perceived Politics and Job Satisfaction

This study explores the moderating potential of positive affectivity (PA) and perceived collective efficacy (PCE) on the relationship between 3 dimensions of politics perceptions and job satisfaction. We hypothesized that high levels of PA and PCE, in unison, would buffer the harmful effects of perceived politics on job satisfaction. Regression analyses for the 3 dimensions (i.e., general politics, go along to get along, and pay and promotion) yielded a significant finding for the PA × PCE × Go Along to Get Along 3-way interaction only. Consistent with our expectations, low PA-low PCE individuals were less satisfied with their jobs when levels of go-along-to-get-along politics increased. Contrary to our hypothesis, however, high PA-high PCE individuals reported a significant inverse relationship between perceived politics and job satisfaction. Implications of these findings and directions for future research are provided.