Comparison of Suicide Attempters and Decedents in the U.S. Army: A Latent Class Analysis

A clearer understanding of risk factors for suicidal behavior among soldiers is of principal importance to military suicide prevention. It is unclear whether soldiers who attempt suicide and those who die by suicide have different patterns of risk factors. As such, preventive efforts aimed toward reducing suicide attempts and suicides, respectively, may require different strategies. We conducted a latent class analysis (LCA) to examine classes of risk factors among suicide attempters (n = 1,433) and decedents (n = 424). Both groups were represented by three classes: (1) External/Antisocial Risk Factors, (2) Mental Health Risk Factors, and (3) No Pattern. These findings support the conceptualization that military suicide attempters and decedents represent a single population.     

Acute neuropsychological changes in hemodialysis and peritoneal dialysis patients.

This study examined the impact of different dialysis treatments on the neuropsychological (NP) functioning of 145 end-stage renal disease patients. Hemodialysis (HD) and peritoneal dialysis (PD) patients were administered an NP test battery and measures of mood on 2 consecutive days (pre- and 24 hr postdialysis). Biochemistry was assessed at each session. Results indicated significant improvements in NP functioning (attention, concentration, verbal and visual memory, and psychomotor speed) in HD patients 24 hr postdialysis. No such fluctuations were found in PD patients. Although biochemical changes were found in the HD patients at the same time points, these were not consistently related to the NP changes.     

BODY POLITICS AND THE POLITICS OF BODIES: Racism and Hauerwasian Theopolitics

Today dominative power operates apart from, and exterior to, those state governmentalities that the "body politics" of Stanley Hauerwas disavows as "constantinian" entanglements such as military service, governmental office, and conspicuous expressions of civil religion. This is especially true with respect to those biopolitical modalities David Theo Goldberg names as "racelessness," by which material inequalities are racially correlated, thereby allowing whiteness to mediate life and ration death. If, as Hauerwas contends, radical ecclesiology is indeed a theopolitical alternative to the nation–state's politics of violence, then it must prove itself resistant to such racialized violence. However, inasmuch as the (largely) uncontested fact of ecclesial segregation recapitulates these broader stratifications and exclusions, the church functions as a passive civil religion and itself participates in the politics of "nonviolent violence." Thus, Hauerwas must do something that he has been reluctant to do. He must talk about race and racism more directly, specifying how his ecclesiological theopolitics resists such forms of violence; more importantly, he must demonstrate how actual ecclesial congregations instantiate such resistance. In short, to be truly nonviolent, Hauerwas's body politics must become a politics of bodies.     

Mediation Analysis in Social Psychology: Current Practices and New Recommendations

A key aim of social psychology is to understand the psychological processes through which independent variables affect dependent variables in the social domain. This objective has given rise to statistical methods for mediation analysis. In mediation analysis, the significance of the relationship between the independent and dependent variables has been integral in theory testing, being used as a basis to determine (1) whether to proceed with analyses of mediation and (2) whether one or several proposed mediator(s) fully or partially accounts for an effect. Synthesizing past research and offering new arguments, we suggest that the collective evidence raises considerable concern that the focus on the significance between the independent and dependent variables, both before and after mediation tests, is unjustified and can impair theory development and testing. To expand theory involving social psychological processes, we argue that attention in mediation analysis should be shifted towards assessing the magnitude and significance of indirect effects.     

Accommodating Surprise in Taxonomic Tasks: The Role of Expertise

This paper reports a psychological study of human categorization that looked at the procedures used by expert scientists when dealing with puzzling items. Five professional botanists were asked to specify a category from a set of positive and negative instances. The target category in the study was defined by a feature that was unusual, hence situations of uncertainty and puzzlement were generated. Subjects were asked to think aloud while solving the tasks, and their verbal reports were analyzed. A number of problem solving strategies were identified, and subsequently integrated in a model of knowledge‐guided inductive categorization. Our model proposes that expert knowledge influences the subjects' reasoning in more complex ways than suggested by earlier investigations of scientific reasoning. As in previous studies, domain knowledge influenced our subjects' hypothesis generation and testing; but, additionally, it played a central role when subjects revised their hypotheses.