Background: Post-traumatic stress disorder is a prevalent, debilitating, and costly psychiatric disorder. Evidenced-based psychotherapies, including Cognitive Processing Therapy, are effective in treating PTSD, although a fair proportion of individuals show limited benefit from such treatments. CPT requires cognitive demands such as encoding, recalling, and implementing new information, resulting in behavioral change that may improve PTSD symptoms. Individuals with PTSD show worse cognitive functioning than those without PTSD, particularly in acquisition of verbal memory. Therefore, memory dysfunction may limit treatment gains in (...) CPT in some individuals with PTSD. Methods and Analysis: Here, we present a protocol describing the Cognition and PsychoTherapy in PTSD study, a prospective, observational study examining how cognitive functioning affects treatment response in CPT for PTSD. The study aims to recruit 105 outpatient veterans with PTSD between the ages of 18 and 70 years. Prior to beginning 12 sessions of CPT, Veteran participants will have standardized assessments of mood and functioning and complete a comprehensive neurocognitive battery assessing episodic learning, attention and speed of processing, language ability, executive control, and emotional functioning. This study aims to fill gaps in the current literature by: examining the specificity of memory effects on treatment response; exploring how baseline cognitive functioning impacts functional outcomes; and examining potential mechanisms, such as memory for treatment content, that might explain the effects of baseline memory functioning on PTSD symptom trajectory. Discussion: If successful, this research could identify clinically relevant neurocognitive mechanisms that may impact PTSD psychotherapy and guide the development of individualized treatments for PTSD. (shrink)

Biologists have long theorized about the evolution of life cycles, meiosis, and sexual reproduction. We revisit these topics and propose that the fundamental difference between life cycles is where and when multicellularity is expressed. We develop a scenario to explain the evolutionary transition from the life cycle of a unicellular organism to one in which multicellularity is expressed in either the haploid or diploid phase, or both. We propose further that meiosis might have evolved as a mechanism to correct for (...) spontaneous whole‐genome duplication (auto‐polyploidy) and thus before the evolution of sexual reproduction sensu stricto (i.e. the formation of a diploid zygote via the fusion of haploid gametes) in the major eukaryotic clades. In addition, we propose, as others have, that sexual reproduction, which predominates in all eukaryotic clades, has many different advantages among which is that it produces variability among offspring and thus reduces sibling competition. (shrink)

One of the first volumes in the new series of prestigious Oxford Handbooks, The Oxford Handbook of Jurisprudence and Philosophy of Law brings together specially commissioned essays by twenty-six of the foremost legal theorists currently writing, to provide a state of the art overview of jurisprudential scholarship.

Last year in June, British doctors went on strike for the first time since 1975. Amidst a global economic downturn and with many health systems struggling with reduced finances, around the world the issue of public health workers going on strike is a very real one. Almost all doctors will agree that we should always follow the law, but often the law is unclear or does not cover a particular case. Here we must appeal to ethical discussion. The General Medical (...) Council, in its key guidance document for practising doctors, Good Medical Practice, claims that ‘Good doctors make the care of their patients their first concern’. Is this true? And if so, how is this relevant to the issue of striking? One year on since the events, we carefully reflect and argue whether it was right for doctors to pursue strike action, and call for greater discussion of ethical issues such as the recent strikes, particularly among younger members of the profession. (shrink)

Emotional stimuli are consistently better remembered than neutral stimuli. However, the reported effects of emotional stimuli on source memory are less consistent. In four experiments, we examined spatial and temporal source memory and free recall for emotional words previously studied in an fMRI experiment. In the fMRI experiment, the unpleasant but not the pleasant words were shown to activate the amygdala. In the experiments reported here, spatial and temporal source memory were reduced for the unpleasant words compared to pleasant and (...) neutral words. Reduced spatial memory for unpleasant words was observed across studies that varied the specific stimuli, task conditions, and incidental versus intentional encoding instructions. Free recall was enhanced for the pleasant and unpleasant words compared to neutral words. The results demonstrate reduced source memory for unpleasant words even when item recall is enhanced. Our findings are consistent with prior reports of amygdala-mediated amnestic effects evoked by unpleasant stimuli. (shrink)

One of the lingering questions for development economists is that of economic transition and whether development can be promoted by a strong political leader. Earlier writings on leadership and economic development tend to fall into one of two camps: leaders matter and can contribute positively to economic growth, or leaders seldom have positive effects and, at best, can avoid doing a great deal of harm. This article establishes a third option—a middle-ground position—between these two views. Good leadership can, indeed, have (...) a positive effect on economic growth but only during the initial moment when economic reform is up for grabs. Once the opportunity to implement sweeping reform has passed, interests become entrenched, and the opportunity for growth-enhancing reform passes. Bad leaders, on the other hand, can hamper economic growth in periods well beyond the ideal reform moment. (shrink)

Objective: To examine changes in patients’ desired control of the deep brain stimulator and perception of global life control throughout DBS.Methods: A consecutive cohort of 52 patients with Parkinson’s disease was recruited to participate in a prospective longitudinal study over three assessment points. Semi-structured interviews assessing participants’ desire for stimulation control and perception of global control were conducted at all three points. Qualitative data were coded using content analysis. Visual analog scales were embedded in the interviews to quantify participants’ perceptions (...) of control over time.Results: Participants reported significant increases in their perception of global control over time and significant declines in their desired control of the stimulation. These changes were unrelated to improvements in motor symptoms. Improvements in global control were negatively correlated with a decline in desired stimulation control. Qualitative data indicate that participants have changed, nuanced levels of desired control over their stimulators. Increased global life control following DBS may be attributed to increased control over PD symptoms, increased ability to engage in valued activities, and increased overall self-regulation, while other domains related to global control remained unaffected by DBS.Conclusions: There are few empirical data documenting patients’ desire for stimulation control throughout neuromodulation and how stimulation control is related to other aspects of control despite the growing application of neuromodulation devices to treat a variety of disorders. Our data highlight distinctions in different types of control and have implications for the development of patient-controlled neurostimulation devices. (shrink)

The Association for Core Texts and Courses asserts its commitment to coming together and speaking about the scientific, the political, and the artistic to live together in an enlightened fashion. ACTC's Tenth Annual Conference re-affirmed and re-examined the value of serious reading and discussion focused through core texts.

Why do otherwise well-intentioned managers make decisions that have negative social or environmental consequences? To answer this question, the authors combine the literature on construal level theory with the compromise effect to explore the circumstances that lead to seemingly unethical decision-making. The results of two studies suggest that the degree to which managers make high-risk tradeoffs is highly influenced by how they mentally represent the decision context. The authors find that managers are more likely to make seemingly unethical tradeoffs when (...) psychological distance is high (rather than low) and when they are forced to choose between competing alternatives. However, when given the option not to choose, managers better reflect on the consequences of each alternative, and thus become more likely to choose options with less risk of negative consequences. The results suggest that simply offering managers the option not to choose may reduce psychological distance and help organizations avoid seemingly unethical decision-making. (shrink)

Image-making is a nearly universal human behavior, yet the visual strategies and conventions to represent things in pictures vary greatly over time and space. In particular, pictorial styles can differ in their degree of figurativeness, varying from intersubjectively recognizable representations of things to very stylized and abstract forms. Are there any patterns to this variability, and what might its ecological causes be? Experimental studies have shown that demography and the structure of interaction of cultural groups can play a key role: (...) the greater the degree of contact with other groups, the more recognizable and less abstract are the representations. Here we test this hypothesis on a real-world dataset for the first time. We constructed a balanced database of Indigenous Australian rock art motifs from both isolated and contact Aboriginal groups (those often in contact with other groups). We then ran a survey asking participants to judge the recognizability of the motifs and to provide interpretations. Results show that motifs from contact Aboriginal groups were more likely to be judged as inter-subjectively recognizable and also elicited more convergent descriptions than motifs from isolated groups. This is consistent with the idea that intergroup contact is likely to be an important factor in the cultural evolution of pictorial representation. We discuss the implications of these findings for the archaeology and anthropology of art, and the parallels with language evolution. (shrink)

BackgroundKinarm Standard Tests is a suite of upper limb tasks to assess sensory, motor, and cognitive functions, which produces granular performance data that reflect spatial and temporal aspects of behavior. We have previously used principal component analysis to reduce the dimensionality of multivariate data using the Kinarm End-Point Lab. Here, we performed PCA using data from the Kinarm Exoskeleton Lab, and determined agreement of PCA results across EP and EXO platforms in healthy participants. We additionally examined whether further dimensionality reduction (...) was possible by using PCA across behavioral tasks.MethodsHealthy participants were assessed using the Kinarm EXO and EP. Four behavioral tasks were performed that quantified arm sensory and motor function, including position sense [Arm Position Matching ] and three motor tasks [Visually Guided Reaching, Object Hit, and Object Hit and Avoid ]. The number of components to include per task was determined from scree plots and parallel analysis, and rotation type was decided on a per-task basis. To assess agreement, we compared principal components across platforms using distance correlation. We additionally considered inter-task interactions in EXO data by performing PCA across all six behavioral assessments.ResultsBy applying PCA on a per task basis to data collected using the EXO, the number of behavioral parameters were substantially reduced by 58–75% while accounting for 76–87% of the variance. These results compared well to the EP analysis, and we found good-to-excellent agreement values between PCs from the EXO and those from the EP. Finally, we were able to reduce the dimensionality of the EXO data across tasks down to 16 components out of a total of 76 behavioral parameters, which represents a reduction of 79% while accounting for 73% of the total variance.ConclusionPCA of Kinarm robotic assessment appears to capture similar relationships between kinematic features in healthy individuals and is agnostic to the robotic platform used for collection. Further work is needed to investigate the use of PCA-based data reduction for the characterization of neurological deficits in clinical populations. (shrink)

Undergraduate projects may contribute new knowledge, but commonly their main purpose is an exercise in learning and applying simple research methods. They are usually short term and a first step into the research field. Support for undergraduate research experience is simple enough. However, integral to the research process is ethical scrutiny. A high standard of conduct of research is essential. The question of whether undergraduate student projects should be subject to full ethical review, to the same extent as that undertaken (...) for full scale academic work, is a matter of debate. The purpose of this study was to explore the views of academics on the nature and extent of ethical review considered appropriate for undergraduate research projects. This was done in order to identify which side of the above debate was favoured. Participants were undergraduate research project supervisors, drawn from a range of disciplines where research on human subjects is undertaken. A series of focus groups were undertaken, transcribed and subjected to thematic analysis. There was general consensus that some consideration should be given to the ethical issues relating to student projects. However, participants were limited in their explicit identification of such issues, with only extreme examples being specifically described. Some favoured a ‘light touch’ proportional to the size of the project as appropriate, while others considered the level ethical scrutiny not related to the size, duration or outcome of the work. Opinions were divided on where responsibility ultimately lay. Some considered it to belong at departmental, faculty or institutional level, but others held the individual supervisor accountable. The degree of involvement of undergraduate research in ethical review and approval is clearly an issue amongst academics. This study helps raise awareness of these issues and promotes debate on the appropriate level and format of review needed for undergraduate research training. (shrink)

Discrete choice experiments—selecting the best and/or worst from a set of options—are increasingly used to provide more efficient and valid measurement of attitudes or preferences than conventional methods such as Likert scales. Discrete choice data have traditionally been analyzed with random utility models that have good measurement properties but provide limited insight into cognitive processes. We extend a well-established cognitive model, which has successfully explained both choices and response times for simple decision tasks, to complex, multi-attribute discrete choice data. The (...) fits, and parameters, of the extended model for two sets of choice data (involving patient preferences for dermatology appointments, and consumer attitudes toward mobile phones) agree with those of standard choice models. The extended model also accounts for choice and response time data in a perceptual judgment task designed in a manner analogous to best–worst discrete choice experiments. We conclude that several research fields might benefit from discrete choice experiments, and that the particular accumulator-based models of decision making used in response time research can also provide process-level instantiations for random utility models. (shrink)

Over the last decade, the news media have reported on corporate scandals involving high-profile organizations such as Arthur Anderson, AOL Time Warner,Enron, Halliburton, Kmart, and Xerox. In 2001, the Conference Board of Canada noted that supplier relationships represent some of the most common ethical problems in the private sector, and estimated that 95% of corporations in the United States and 86% of corporations in Canada have implemented ethical codes of conduct and are espousing their commitment to building relationship with ethical (...) suppliers. While a significant amount of research on corporate ethics has been published (for examples see Akaah and Riordan 1989; Cullen et al. 2003; Román and Ruiz 2005; Schminke et al. 2005; and Weaver et al. 1999a, 1999b), what still remains unknown is how and when a supplier’s ethical code of conduct matters to the buyer making decisions regarding their choice of suppliers. (shrink)

This study compares college students with other adults in terms of the Muncy–Vitell (1992) consumer ethics scale. Further, the study updates the Muncy–Vitell consumer ethics scale with modifications that include rewording and the addition of new items. These new items can be grouped into three distinct categories – (1) downloading/buying counterfeit goods, (2) recycling/environmental awareness and (3) doing the right thing/doing good. The study also compares these two groups in terms of their attitude toward business. Results show that there is (...) indeed a significant difference between these two groups in terms of ethical perceptions, but not in terms of the “recycling” items and the “doing good” items. There was also little difference between the groups in terms of their attitude toward business indicating that attitude toward business does not explain their different ethical perspectives. (shrink)

Suicide has long been the subject of philosophical, literary, theological and cultural–historical inquiry. But despite the diversity of disciplinary and methodological approaches that have been brought to bear in the study of suicide, we argue that the formal study of suicide, that is, suicidology, is characterized by intellectual, organizational and professional values that distinguish it from other ways of thinking and knowing. Further, we suggest that considering suicidology as a “social practice” offers ways to usefully conceptualize its epistemological, philosophical and (...) practical norms. This study develops the idea of suicidology as a social practice and considers the implications for research, practice and public discourse. (shrink)

This article presents the results of a study that investigated the roles that religiosity and ones money ethic play in determining consumer attitudes/beliefs in various situations regarding questionable consumer practices. One dimension of religiosity – intrinsic religiousness – was studied. Four separate dimensions of a money ethic scale were initially examined, but only one was used in the final analyses. Results indicated that both intrinsic religiousness and one’s money ethic were significant determinants of most types of consumer ethical beliefs.

Stakeholder theory is widely recognized as a management theory, yet very little research has considered its implications for individual managerial decision-making. In the two studies reported here, we used stakeholder theory to examine managerial decisions about balancing stakeholder interests. Results of Study 1 suggest that indivisible resources and unequal levels of stakeholder saliency constrain managers’ efforts to balance stakeholder interests. Resource divisibility also influenced whether managers used a within-decision or an across-decision approach to balance stakeholder interests. In Study 2 we (...) examined instrumental and normative implications of these two approaches. We conclude by considering the contributions of this research. (shrink)

This article presents the results of a study that investigated the role that religiosity plays in determining consumer attitudes/beliefs regarding various questionable consumer practices. Additionally, other personal factors were examined including idealism, relativism, consumer alienation and selected demographics such as income and age. All of these constructs were examined as antecedents of consumer ethical beliefs. The results of a post hoc analysis indicated that religiosity was a significant determinate of both idealism and relativism, and since idealism and relativism determine consumer (...) ethical beliefs, religiosity is a significant indirect determinate of consumer ethical beliefs. (shrink)