Supervisory interpretation of safety climate versus employee safety climate perception: Association with safety behavior and outcomes for lone workers

Research has shown that safety climate predicts safety behavior and safety outcomes in a variety of settings. Prior studies have focused on traditional work environments in which employees and supervisors work in the same location and the mechanisms through which safety climate affects behavior are largely understood. However, the nascent research examining safety climate among lone workers suggests that safety climate may have some uniqueness in this context. Based on leadership theories and utilizing an exploratory approach, this study increases our understanding of the lone worker context by examining employee perception of safety climate and supervisory interpretation of safety climate; how similar or different they are, and how they are related to important safety outcomes. Surveys were administered to a matched sample of 1831 truck drivers and their 219 supervisors at four different trucking companies. Objective data on employee injuries were collected six months after survey administration. The results provided support for the measurement equivalence of the Trucking Safety Climate Scale at the organization level for both employee and supervisor respondents. For both organization- and group-level safety climate, employee perceptions of safety climate and supervisory interpretation of safety climate were significantly different, such that supervisors provided higher ratings for both safety climate sub-scales. Further, only employee safety climate perceptions significantly predicted self-reported safety behavior (directly) and objective injury outcomes (indirectly). This suggests that when trying to gauge and improve upon a trucking company’s safety climate, we should rely on employee perspectives, rather than supervisory interpretation, of safety climate.     

A hierarchy of cortical responses to sequence violations in three-month-old infants

The adult human brain quickly adapts to regular temporal sequences, and emits a sequence of novelty responses when these regularities are violated. These novelty responses have been interpreted as error signals that reflect the difference between the incoming signal and predictions generated at multiple cortical levels. Do infants already possess such a hierarchy of violation-detection mechanisms? Using high-density recordings of event-related potentials during an auditory local–global violation paradigm, we show that three-month-old infants process novelty in temporal sequences at two distinct levels. Violations of local expectancies, such as perceiving a deviant vowel “a” after repeated presentation of another vowel i-i-i, elicited an early auditory mismatch response. Conversely, violations of global expectancies, such as hearing the rare sequence a-a-a-a instead of the frequent sequence a-a-a-i, modulated this early mismatch response and led to a late frontal negative slow wave, whose cortical sources included the left inferior frontal region. These results suggest that the infant brain already possesses two dissociable systems for temporal sequence learning.     

Constructive criticism: An evaluation of Buller and Hardcastle's genetic and neuroscientific arguments against Evolutionary Psychology

David Buller and Valerie Hardcastle have argued that various discoveries about the genetics and nature of brain development show that most “central” psychological mechanisms cannot be adaptations because the nature of the contribution from the environment on which they are based shows they are not heritable. Some philosophers and scientists have argued that a strong role for the environment is compatible with high heritability as long as the environment is highly stable down lineages. In this paper I support this view by arguing that the discoveries Buller and Hardcastle refer to either do not show as strong a role for the environment as they suggest, or these discoveries show that the brain's developmental process depends in many cases on input from the environment that is highly stable across generations.     

Is the Brain a Quantum Computer?

We argue that computation via quantum mechanical processes is irrelevant to explaining how brains produce thought, contrary to the ongoing speculations of many theorists. First, quantum effects do not have the temporal properties required for neural information processing. Second, there are substantial physical obstacles to any organic instantiation of quantum computation. Third, there is no psychological evidence that such mental phenomena as consciousness and mathematical thinking require explanation via quantum theory. We conclude that understanding brain function is unlikely to require quantum computation or similar mechanisms.     

The “simulation” of the facial expression of emotions in case of short and long stimulus duration. The effect of pre-motor cortex inhibition by rTMS

Embodied cognition model states that the “simulation process” is necessary to the recognition of emotional significance of face. The present research explored the contribution of frontal motor brain components (i.e. mainly premotor area) to embodied cognition by using rTMS stimulation, to produce a temporary disruption of this specific cortical site. Secondly, short and long stimulus duration conditions were included to verify the contribution of the “simulation process” in response to overt and covert emotional stimulus comprehension. Nineteen subjects were asked to detect emotion/no emotion (anger, fear, happiness, neutral) in these two experimental conditions, by using a backward masking procedure. Five-second rTMS (1 Hz) was delivered before the stimulus onset. False alarms (Fa) and RTs increased and Hits decreased when frontal premotor brain activity was disrupted, specifically in response to anger and fear, for both long and shortduration condition. Thus, the present results highlight the main role of the frontal motor system for emotion facial expression processing.     

Impact of social support on health status and life satisfaction in people with a spinal cord injury

Abstract

Purpose: Assessment of the impact of received social support on functional health status and life satisfaction in people with spinal cord injury (SCI). Design: Respondents were 176 people with SCI between 18 and 65 years of age and living in the community. Mean time after injury was 3.6 years. Problem-oriented and emotion-oriented support, received from family members, friends and relatives, and professionals were assessed with the Sources of Social Support Inventory. Health status was assessed with the Sickness Impact Profile 68 and life satisfaction with the Life Satisfaction Questionnaire. Structural equation modelling with LISREL V8 was used to study relationships of different types and sources of social support with health status and life satisfaction.Results: Emotion-oriented support led to better psychological functioning and to greater life satisfaction. In addition, emotion-oriented support from the family led to greater satisfaction with relationships and emotion-oriented support from friends and acquaintances led to less satisfaction with social life. Problem-oriented support was not clearly related to health status and life satisfaction; there was only a negative relation between problem-oriented support and satisfaction with social life. Support, problem-oriented or emotion-oriented, from health-care professionals showed no relationships with health status or life satisfaction.Conclusions: Emotion-oriented support from family members and friends was most important for people with SCI. Greater problem-oriented support appears to be related to poorer life satisfaction.     

Women's experience of brain injury: An interpretative phenomenological analysis

Acquired traumatic brain injury (TBI) can leave the survivor with a complex range of psychological sequalae. This study aims to investigate the experience from the perspective of women with acquired TBI. Using a qualitative research method, six women with a TBI were interviewed about their experience, and the interviews were transcribed verbatim and analysed according to Interpretative Phenomenological Analysis (IPA). The major themes that emerged were: awareness of change; the emotional reaction; struggling to make sense; adaptation and acceptance. This article describes the process of adaptation, and the implications for rehabilitation are discussed. It is suggested that an intervention based on these themes might be an effective tool in rehabilitation.     

The Rationality of Ultimate Concern: Moral Exemplars,Theological Ethics,and the Science of Moral Cognition

This paper argues that consideration of moral exemplars may provide a means for integrating insights across philosophical ethics, theological ethics, and the scientific study of moral cognition. Key to this endeavor is an understanding of the relation of cognition and emotion in ethical decision-making, a relation that is usually understood to be oppositional but which in proper circumstances may be understood to be quite the opposite. Indeed, a distinctive feature of moral exemplarity may consist in the ability to properly integrate the emotions into the moral life, and reference to and imitation of exemplars may involve a referencing and imitating of the emotions of the exemplar.