Too hot to help or too cold to care? On the links between ambient temperature,volunteerism, and civic engagement

We investigated the relationship between ambient temperature and prosocial behaviour in real-life settings. It was guided by two mechanisms of opposite predictions, namely (1) higher temperatures decrease prosociality by harming well-being, and (2) higher temperatures increase prosociality by promoting the embodied cognition of social warmth. In Study 1, U.S. state-level time-series data (2002–2015) supported the first mechanism, with higher temperatures predicting lower volunteer rates through lower well-being. Study 2 furthered the investigation by probing the relationship between neighbourhood temperature and civic engagement of 2268 U.S. citizens. The data partially supported the well-being mechanism and reported findings contradictory to the social embodiment mechanism. Higher temperatures predicted lower interpersonal trust and subsequently lower civic engagement. The unexpected finding hinted at a cognitive effect of heat and a compensatory mechanism in social thermoregulation. We discussed the findings regarding their methodological strengths and weaknesses, with cautions made on ecological fallacies and alternative models.     

Spaced food but not electrical brain stimulation induces polydipsia and air licking.

An attempt was made to induce polydipsia in rats whose lever pressing was reinforced with food pellets or electrical brain stimulation. Nine food-deprived, water-sated rats drank water excessively during sessions in which food pellets were delivered. When brain stimulation was substituted for food, drinking immediately ceased. Delivering brain stimulation according to a variety of schedules, pairing brain stimulation with food reinforcement, and substituting an air stream for water, each failed to produce polydipsic licking. These results show that polydipsia is not induced by all reinforcers.     

天气和空气污染对诚信行为的影响：一项校园丢钱包的现场实验

本文通过两个研究探讨天气状况和空气污染对诚信行为的影响。研究1通过重新分析Cohn, Maréchal, Tannenbaum和Zünd (2019)在全球范围内对诚信行为的研究数据, 发现了天气状况和空气污染对诚信行为的影响; 研究2通过准实验的研究方法, 在3所高校进行了丢钱包的实验并记录当天天气和空气污染状况。两项研究共同表明：(1)在非晴朗的天气下, 人们会做出更多的不诚信行为; (2)空气污染越严重, 人们越有可能出现不诚信的 行为。     

Ethical challenges in a technological environment: The perspective of engineers versus managers

In his article ‘Better Communication Between Engineers and Managers: Some Ways to Prevent Many Ethically Hard Choices’¹ Michael Davis analyzes the causes of the disaster in terms of a communications gap between management and engineers. When the communication between (representatives of) both groups breaks down, the organization is in (moral) trouble. Crucial information gets stuck somewhere in the organization prohibiting a careful discussion and weighing of all (moral) arguments. The resulting judgment has therefore little (moral) quality. In this paper I would like to comment on some of Michael Davis’s interesting and thought-provoking insights and ideas. A company which implements Davis’s recommendations at least shows some sensitivity to organizational moral issues. But it might miss the point that moral trouble can also result from a common understanding between managers and engineers. Organizational members sometimes tend to be myopic with regard to safety issues. This paper:

Examination of the PC-PTSD in previously deployed Air Force Medical Service personnel

This study assessed the performance of the PC-PTSD in diagnosing postdeployment posttraumatic stress disorder (PTSD) in a cohort of Air Force Medical Services personnel (N = 18,530). The prevalence of PTSD in the cohort was 5.18% based on medical record data. The area under the receiver operating characteristic curve was 0.69, indicating poor classification accuracy. Sensitivity was 47.55%, specificity was 90.68%, positive predictive value was 21.79%, and negative predictive value was 96.94%. The positive and negative likelihood ratios were 5.10 and 0.58, respectively. Several risk factors were found to be associated with a diagnosis of postdeployment PTSD: being a nurse, being enlisted in the medical service career field, being enlisted in the mental health service career field, those over age 30, being a member of the Active Duty service component, and having one’s first deployment be to Iraq. Being an officer was found to be a protective characteristic. These factors could potentially improve screening for PTSD among Air Force healthcare personnel.     

Individual differences in susceptibility to infection and illness following respiratory virus challenge

Abstract

The aim of the present research was to investigate whether susceptibility to experimentally-induced respiratory virus infections and illness is related to measures of personality, physiological state, performance efficiency, and subjective ratings of alertness and motivation obtained prior to virus challenge. Two studies, using different viruses, showed that volunteers who subsequently developed colds had higher temperatures prior to virus challenge than those who remained free from illness. Similarly, those who later had colds were worse than other volunteers on certain performance tests given in the pre-challenge period. The results also showed that task-related motivation was related to subsequent infection. Personality scores were poor predictors of infection and illness, the only exception being introversion, which, in one study, was related to the likelihood of developing a sub-clinical infection.     

Influence of response time frame on mood assessment

Abstract

Dental anxiety and the related avoidance of dental treatment can result in severe impairment of health. We investigated the influence on avoidance behavior of phobic severity, gender, characteristics related to generalized anxiety and depression, such as dysfunctional cognitions and sensitivity of bodily symptoms, as well as personality traits of self-efficacy and locus of control. Forty-eight dental phobics were given an initial assessment and avoidance behavior was determined by the degree of observance of three subsequent dental appointments. Principal component analysis revealed separate factors for trait and phobic anxiety as well as for avoidance and dysfunctional cognitions. Women showed a higher degree of avoidance than men. Regression analysis revealed a high desire for control over dental treatment combined with a low level of perceived control as the only significant predictor variable of avoidance. The results suggest that avoidance behavior in dental phobia could be reduced by extending patients’ control over treatment conditions.     

Book Review

Experienced military air traffic controllers (25 respondents, males = 15, females = 10, years of experience = less than one year = 5 respondents, more than one year but less than three years = 11 respondents and more than three years = 9 respondents) participated in this study to determine whether self-directed team learning exists within their air traffic control teams and to understand the impact of self-directed team learning on the air traffic control work environment. Data on self-directed team learning and learning approaches were collected using a Self-directed Team Learning Questionnaire (SDTLQ) and a Learning Approaches Questionnaire (LAQ). These data were analysed using an inductive reasoning mode for qualitative data analysis and quantitative data analysis followed a supporting deductive reasoning mode. Triangulation as a technique was used to determine whether multiple sources of data agreed and to obtain better, cross-checked insights (Burgess, 1985). Results revealed that these air traffic controllers and air traffic control teams investigated in the study do indeed function within self-directed working, training and learning environments. The quality of team performance was influenced by self-directed team learning initiatives. Furthermore, the quality of self-directed team learning relied upon the effectiveness of air traffic control team performances.     

低色温低强度背景光照射下液晶显示颜色编码的实验研究

采用一台有源矩阵彩色液晶显示器作为主要实验装置,对低色温、低强度背景光照射下液晶显示颜色编码范围及其与色标大小的关系进行了研究。实验结果表明:(1)液晶显示器上色标大小对绝对辨认效果有显著影响,随着色标的增大,辨认错误率随之下降,但下降率则随色标的增大而递减。(2)在色温为3100K的低强度背景光照射下,液晶显示的颜色编码范围因色标大小不同而存在显著差异,当色标面积减小到1×1mm2至2×2mm2时,编码色数目仅限于3-4种。     

With a little help from my friends: A computational model for the role of social support in mood regulation

The growing interest in the role of social support in mental and physical health has led to the development of several intelligent systems that aim to use social mechanisms to simulate healthy behaviour. In this paper a computational model of a human agent is presented which describes the effect of social support on mood. According to the literature, social support can either refer to the social resources that individuals perceive to be available or to the support that is actually provided in problematic situations. The proposed model distinguishes between both roles of social support. The role of social network characteristics has been taken into account, as an individual can perceive or receive social support through his/her social network. In addition, the number of connections (friends), strength of ties (relationships), social isolation and social integration have been studied. Simulation experiments have been done to analyze the effect of the different types of support in different scenarios and also to analyze the role of various social network characteristics on the mood level. It is shown that support can help to reduce the induced stress and thus can contribute to healthy mood regulation and prevention of depression. The presented model provides a basis for an intelligent support system for people with mood regulation problems that take the social network of people into account.