Integrating and Enacting ‘Social and Ethical Issues’ in Nanotechnology Practices

The integration of nanotechnology’s ‘social and ethical issues’ (SEI) at the research and development stage is one of the defining features of nanotechnology governance in the United States. Mandated by law, integration extends the field of nanotechnology to include a role for the “social”, the “public” and the social sciences and humanities in research and development (R&D) practices and agendas. Drawing from interviews with scientists, engineers and policymakers who took part in an oral history of the “Future of Nanotechnology” symposium at the Cornell NanoScale Facility, this article examines how nanotechnology’s ‘social and ethical issues’ are brought to life by these practitioners. From our analysis, three modes of enactment emerge: enacting SEI as obligations and problems-to-be-solved, enacting SEI by ‘not doing it’ in the laboratory, and enacting SEI as part of scientific practice. Together they paint a complex picture where SEI are variously defined, made visible or invisible, included and excluded, with participants showing their skill at both boundary-work (Gieryn Am Sociol Rev 48:781–795, 1983, 1999) and at integration. We conclude by reflecting on what this may mean for the design and implementation of SEI integration policies, suggesting that we need to transform SEI from obligations into ‘matters of care’ (Puig de la Bellacasa Soc Stud Sci 41(1):85–106, 2011) that tend to existing relationalities between science and society and implicate practitioners themselves.     

Tracking cognitive phases in analogical reasoning with event-related potentials

Analogical reasoning consists of multiple phases. Four-term analogies (A:B::C:D) have an encoding period in which the A:B pair is evaluated prior to a mapping phase. The electrophysiological timing associated with analogical reasoning has remained unclear. We used event-related potentials to identify neural timing related to analogical reasoning relative to perceptual and semantic control conditions. Spatiotemporal principal-components analyses revealed differences primarily in left frontal electrodes during encoding and mapping phases of analogies relative to the other conditions. The timing of the activity differed depending upon the phase of the problem. During the encoding of A:B terms, analogies elicited a positive deflection compared to the control conditions between 400 and 1,200 ms, but for the mapping phase analogical processing elicited a negative deflection that occurred earlier and for a shorter time period, between 350 and 625 ms. These results provide neural and behavioral evidence that 4-term analogy problems involve a highly active evaluation phase of the A:B pair.     

Rational Beliefs as Cognitive Protective Factors Against Posttraumatic Stress Symptoms

The current study investigated the predictions of rational emotive behaviour therapy’s (REBT) model of psychological health that rational beliefs would act as cognitive protective factors against posttraumatic stress responses. The study aimed to contribute original data regarding the role of functional cognitions in the prevention of posttraumatic stress symptomology. A model consistent with REBT’s theory of psychological health was investigated through the use of structural equation modelling among a sample of 309 international emergency service personnel who had all been exposed to a significant life trauma. Results indicated that the REBT model of posttraumatic stress responses was found to be an acceptable fit of the data (χ² = 199.99, df = 94, p < .001; RMSEA = .06 (CI 90 % = .05/.08); SRMR = .05; CFI = .93; TLI = .91) and explained 76 % of variance in posttraumatic stress symptoms. Self-acceptance beliefs and high frustration tolerance beliefs negatively predicted posttraumatic stress responses; non-catastrophizing beliefs positively predicted posttraumatic stress responses; and indirect effects were observed between preference beliefs and posttraumatic stress responses via self-acceptance and high frustration tolerance beliefs. Results suggest that rational beliefs are negatively associated with posttraumatic stress responses and support the REBT model of psychological health. Current results contribute important information regarding the role of functional cognitions in the alleviation of posttraumatic stress symptoms.     

Myths and realities of computerphobia: A meta-analysis

Abstract

Common beliefs about computerphobia were examined using meta-analytic techniques. Stringent screening criteria yielded 81 research reports with sample populations including college students, adults and business professionals, elementary/secondary students and teachers as well as postsecondary teachers. Results indicated that none of the six common beliefs characterizing the computerphobic represent reality. The computerphobic is equally likely to be a younger or older male or female. Although computerphobics tend to experience other types of anxiety (mathematics, test, state, trait), these anxieties account for little variance. Results indicated further that computer experience alone is not sufficient to eliminate computerphobia, but that psychological techniques have treated successfully these negative psychological reactions.     

Decoding overlapping memories in the medial temporal lobes using high-resolution fMRI

The hippocampus is proposed to process overlapping episodes as discrete memory traces, although direct evidence for this in human episodic memory is scarce. Using green-screen technology we created four highly overlapping movies of everyday events. Participants were scanned using high-resolution fMRI while recalling the movies. Multivariate pattern analysis revealed that the hippocampus supported distinct representations of each memory, while neighboring regions did not, demonstrating that the human hippocampus maintains unique pattern-separated memory traces even when memories are highly overlapping. The hippocampus also contained representations of spatial contexts that were shared across different memories, consistent with a specialized role in processing space.