Epinephrine facilitation of appetitive learning: attenuation with adrenergic receptor antagonists

Previous studies using aversive training tasks have reported that retention is enhanced by post-training administration of epinephrine. This study investigated the effects of post-training administration of epinephrine on retention of an appetitive task. The results indicate that epinephrine can enhance retention performance in an appetitive task of both rats and mice. Pretraining injections of propranolol and phenoxybenzamine, alpha- and beta-adrenergic receptor antagonists, attenuate the memory-enhancing effects of epinephrine. These results are consistent with the view that release of peripheral epinephrine may regulate storage of new information and may mediate memory modulation produced by a variety of treatments.     

Toward a unified theory of human reasoning

This article presents a unified theory of human reasoning. The goal of the theory is to specify what constitutes reasoning, as opposed to other psychological processes, and to characterize the psychological distinction between inductive and deductive reasoning. The theory views reasoning as the controlled and mediated application of three processes— selective encoding, selective comparison, and selective combination—to inferential rules. The first two of these processes are essentially inductive in nature; the third is essentially deductive. The theory describes these three processes, specifies the kinds of inferential rules and their use in several reasoning tasks, and specifies the mediators that affect how well the processes can be applied to the rules. The theory is shown to apply to a variety of reasoning tasks and is compared to other theories as well.     

For whom is social-network usage associated with anxiety? The moderating role of neural working-memory filtering of Facebook information

Is Facebook usage bad for mental health? Existing studies provide mixed results, and direct evidence for neural underlying moderators is lacking. We suggest that being able to filter social-network information from accessing working memory is essential to preserve limited cognitive resources to pursue relevant goals. Accordingly, among individuals with impaired neural social-network filtering ability, enhanced social-network usage would be associated with negative mental health. Specifically, participants performed a novel electrophysiological paradigm that isolates neural Facebook filtering ability. Participants’ actual Facebook behavior and anxious symptomatology were assessed. Confirming evidence showed that enhanced Facebook usage was associated with anxious symptoms among individuals with impaired neural Facebook filtering ability. Although less robust and tentative, additional suggestive evidence indicated that this specific Facebook filtering impairment was not better explained by a general filtering deficit. These results involving a neural social-network filtering moderator, may help understand for whom increased online social-network usage is associated with negative mental health.     

Associations between sleep variables and ostensibly paranormal experiences and paranormal beliefs: A scoping review

Night-time is a period of great significance for many people who report paranormal experiences. However, there is limited understanding of the associations between sleep variables and seemingly paranormal experiences and/or beliefs. The aim of this review is to improve our understanding of these associations while unifying a currently fragmented literature-base into a structured, practical review. In this pre-registered scoping review, we searched for relevant studies in MEDLINE (PubMed), PsycINFO (EBSCO), Web of Science and EMBASE using terms related to sleep and ostensibly paranormal experiences and beliefs. Forty-four studies met all inclusion criteria. All were cross-sectional and most investigated sleep paralysis and/or lucid dreaming in relation to ostensibly paranormal experiences and paranormal beliefs. Overall, there were positive associations between many sleep variables (including sleep paralysis, lucid dreams, nightmares, and hypnagogic hallucinations) and ostensibly paranormal experiences and paranormal beliefs (including those of ghosts, spirits, and near-death experiences). The findings of this review have potential clinical implications such as reducing misdiagnosis and treatment development and provide foundations for further research. Our findings also highlight the importance of understanding why so many people report ‘things that go bump in the night’.     

When ideals are too "far off': physical self-ideal discrepancy and body dissatisfaction in Japan

There is much evidence that young Japanese adults manifest relatively low body esteem-a phenomenon often explained as an outcome of modesty or limited need for self-enhancement. The author sought to identify additional determinants of this phenomenon and to explain its sources by examining the relationship between several presumed factors and level of body satisfaction rated by 263 Japanese students. The findings confirm earlier evidence of low body satisfaction among young Japanese adults and indicate that it is predicted mainly by a discrepancy between perceptions of the actual body and the ideal, self-esteem, and a predisposition to interpersonal phobia. Although some of the factors revealed are relevant to other cultures as well, the relatively wide discrepancy between self and ideal body and predisposition to interpersonal phobia may characterize young Japanese adults in particular and stem from a specific historical background. Overall, the results suggest that culture has a significant role in shaping collective body images in Japan and that a broader conceptualization of physical self-ideal discrepancy may better explain divergent levels of body satisfaction across cultures.     

Adrenocortical reactivity and social competence in seven year-olds

We examined temporal changes in salivary cortisol in response to a peer self-presentation task in a group of seven year-olds, some of whom scored high, average, and low on the Harter, 1983 Perceived Social Competence Scale. Salivary cortisol was measured pre-task, and 20 and 35 min post-task. We found a significant relation between individual differences in perceived social competence and salivary cortisol reactivity in response to the task. Children who perceived themselves as socially competent exhibited a significantly greater decrease in salivary cortisol from 20 to 35 min following the task compared with children who self-reported a relatively lower degree of social competence. We speculate on the meaning of salivary cortisol changes in childrens socio-emotional development.     

Vasubandhu's Idealism: An encounter between philosophy and religion

According to idealism the world, as we perceive it, is in effect a creation of the mind. There are many different forms of idealism and this paper investigates one form of idealism that was advocated by the 4th century Buddhist Yogācārin Vasubandhu and one not unfamiliar in the west, especially in the works of George Berkeley. This paper suggests that when idealism, as a metaphysical theory, is set within a soteriological framework, as is the case with Vasubandhu, it serves to bridge the philosophical endeavour with the religious quest as outlined in Buddhist thought. Idealism is a theory about the borders between mind and matter, and specifically about the demolition of matter. This demolition, in the hands of Vasubandhu, manages to redefine the framework of speculation by incorporating the soteriological within it and thus constructing a viable bridge between philosophy and religion.