Confirmatory factor analysis of the PTSD Checklist and the Clinician-Administered PTSD Scale in disaster workers exposed to the World Trade Center Ground Zero

Although posttraumatic stress disorder (PTSD) factor analytic research has yielded little support for the DSM-IV 3-factor model of reexperiencing, avoidance, and hyperarousal symptoms, no clear consensus regarding alternative models has emerged. One possible explanation is differential instrumentation across studies. In the present study, the authors used confirmatory factor analysis to compare a self-report measure, the PTSD Checklist (PCL), and a structured clinical interview, the Clinician-Administered PTSD Scale (CAPS), in 2,960 utility workers exposed to the World Trade Center Ground Zero site. Although two 4-factor models fit adequately for each measure, the latent structure of the PCL was slightly better represented by correlated reexperiencing, avoidance, dysphoria, and hyperarousal factors, whereas that of the CAPS was slightly better represented by correlated reexperiencing, avoidance, emotional numbing, and hyperarousal factors. After accounting for method variance, the model specifying dysphoria as a distinct factor achieved slightly better fit. Patterns of correlations with external variables provided additional support for the dysphoria model. Implications regarding the underlying structure of PTSD are discussed.     

Multiphasic neuronal transfer functions for representing temporal structure

Neural network models of timing have struggled to account for animal timing capabilities using the accepted connectionist assumptions, in most cases without postulating the existence of explicit neuronal time-keeping mechanisms. Current ethological and physiological data, however, suggest that cellular oscillators form the foundation for animals’ temporal capacities. We propose that these oscillators could be used as temporal filters that capture the temporal structure of the animal’s experience. A model is presented that accounts for a number of the salient features of the feeding anticipatory response with only a single circadian filter. This model goes beyond current entrainment models in that it correctly predicts the relationship between the feeding period and the anticipatory interval. An alternative approach using multiple filters is examined that can account for animals’ ability to correctly anticipate two daily feeding times.     

Christianity and Feminism: Do they need each other?

Abstract

This article presents personal reflections on the relationship between Christianity and feminism. It argues that Christian ideas have influenced the historical development of feminism, and that there exists a continuing affinity between some debates of the contemporary secular women's movement and those of committed Christian feminists. It presents an historical example front the nineteenth century which shows how Christian and early feminist ideas were combined in the work of Florence Nightingale. It then discusses the global empowerment of women in relation to the challenge and opportunity this poses for the Christian churches, and reflects on the wisdom of women as an important source for Christian renewal. The article argues that Christianity and feminism both challenge and need each other for mutual transformation. Without a rightly understood feminism Christianity will not remain true to its own nature and, without Christianity or rather without religion and spirituality, feminism will lack an essential source of empowerment. It also raises the question of what difference the participation of women will make to the future of Christian theology.     

An Investigation into Unethical Behavior Intentions Among Undergraduate Students: A Malaysian Study

The purpose of this study is to investigate the influence of the dimensions of the theory of planned behavior, gender and course majors on unethical behavior intentions among Generation Y undergraduates. The sample of this study comprises 245 undergraduates from a private higher education institution (PHEI) in Malaysia. The instrument of this study is developed based on concepts developed from extant literature. Reliability and validity is accessed using Cronbach’s Alpha and Exploratory Factor Analysis respectively. Social desirability bias was monitored utilizing concepts adapted from Phillips and Clancy (American Journal of Sociology, 77(5), 921–940, 1972). Multiple Linear Regression and Independent sample T-tests were used for hypotheses testing. As a whole, results indicate that egoism, utilitarianism and magnitude of consequences exerted significant influence on unethical behavior intentions. Peer influence was not significant. In terms of gender, unethical intentions among males were influenced by egoism and peer influenced while females by utilitarianism and magnitude of consequences. Business majors did not consider magnitude of consequences significant in unethical behavior intentions. Ethical values form the fundamentals of ethical culture within organizations and a business environment which is increasingly based on self-regulation. Ethics is an essential part of the holistic personal development of future business leaders. As such, by understanding ethical attitudes and perceptions, we can draw implications for the further enhancements of teaching and learning of Business Ethics in academia as well as the development of ethical culture in the Malaysian context. Educators, parents and society also need to realise their role in the ethical development of these future Malaysian leaders. The framework of this study could be extended to actual behaviors, adult samples and also account for religiosity and age. This study utilizes the established dimensions and framework of the Theory of Planned Behavior in bridging the gap of research in unethical behavior within the context of a PHEI in Malaysia.     

Attentional biases and memory for emotional stimuli in men and male rhesus monkeys

We examined attentional biases for social and non-social emotional stimuli in young adult men and compared the results to those of male rhesus monkeys (Macaca mulatta) previously tested in a similar dot-probe task (King et al. in Psychoneuroendocrinology 37(3):396–409, 2012). Recognition memory for these stimuli was also analyzed in each species, using a recognition memory task in humans and a delayed non-matching-to-sample task in monkeys. We found that both humans and monkeys displayed a similar pattern of attentional biases toward threatening facial expressions of conspecifics. The bias was significant in monkeys and of marginal significance in humans. In addition, humans, but not monkeys, exhibited an attentional bias away from negative non-social images. Attentional biases for social and non-social threat differed significantly, with both species showing a pattern of vigilance toward negative social images and avoidance of negative non-social images. Positive stimuli did not elicit significant attentional biases for either species. In humans, emotional content facilitated the recognition of non-social images, but no effect of emotion was found for the recognition of social images. Recognition accuracy was not affected by emotion in monkeys, but response times were faster for negative relative to positive images. Altogether, these results suggest shared mechanisms of social attention in humans and monkeys, with both species showing a pattern of selective attention toward threatening faces of conspecifics. These data are consistent with the view that selective vigilance to social threat is the result of evolutionary constraints. Yet, selective attention to threat was weaker in humans than in monkeys, suggesting that regulatory mechanisms enable non-anxious humans to reduce sensitivity to social threat in this paradigm, likely through enhanced prefrontal control and reduced amygdala activation. In addition, the findings emphasize important differences in attentional biases to social versus non-social threat in both species. Differences in the impact of emotional stimuli on recognition memory between monkeys and humans will require further study, as methodological differences in the recognition tasks may have affected the results.     

Effects of Induced Emotional State on Lexical Processing in Younger and Older Adults

The authors investigated the effects of an induced emotional mood state on lexical decision task (LDT) performance in 50 young adults and 25 older adults. Participants were randomly assigned to either happy or sad mood induction conditions. An emotional mood state was induced by having the participants listen to 8 min of classical music previously rated to induce happy or sad moods. Results replicated previous studies with young adults (i.e., sad-induced individuals responded faster to sad words and happy-induced individuals responded faster to happy words) and extended this pattern to older adults. Results are discussed with regard to information processing, aging, and emotion.     

disowning our shadow: a psychoanalytic approach to understanding punitive public attitudes

Punitive public attitudes cannot be easily explained by pointing to instrumental concerns (e.g., fear of crime, personal victimization, or real or perceived levels of crime). Instead, numerous observers have suggested that public punitiveness is more a symptom of free-floating anxieties and insecurities resulting from social change than a rational response to crime problems. We argue that these public concerns might be better understood by drawing on the insights of psychoanalytic theory, and we review relevant theoretical work to that effect.     

What is happening in psychology of learning courses?

Current practices in the undergraduate Psychology of Learning course were assessed through a survey in which a questionnaire probing the teaching of the course was sent to 238 4-year colleges and universities in the United States. Fifty-four percent of the questionnaires were returned. Learning courses were taught at all but 10 of the schools that responded. The course typically is one of several that can be selected to fulfill requirements for the major in psychology. The course orientation and content varied widely from cognitive to eclectic to behavioral, and laboratory requirements existed in less than half of the courses. The effects of these practices on behavior analysis are considered and several suggestions are made for teaching behavior analysis in the Learning course and elsewhere to undergraduates.