CHRONIC NOISE AND PSYCHOLOGICAL STRESS

Abstract— This article illustrates the value of incorporating psychological principles into the environmental sciences Psycho physiological, cognitive, motivational, and affective indices of chronically exposed to aircraft noise We demonstrate for the first time that chronic noise exposure is associated with elevated neuroendocnne and cardiovascular measures, muted cardiovascular reactivity to a task presented under acute noise, deficits in a standardized reading test administered under quiet conditions, poorer long-term memory, and diminished quality of life on a standardized index Children in high-noise areas also showed evidence of poor persistence on challenging tasks and ambulation to auditory distraction on a signal-to-noise task They reported considerable annoyance with community noise levels, as measured utilizing a calibration procedure that adjusts for individual differences in rating criteria for annoyance judgments     

Multi- and unisensory decoding of words and nonwords result in differential brain responses in dyslexic and nondyslexic adults

The present functional magnetic resonance imaging (fMRI) study was designed, in order to investigate the neural substrates involved in the audiovisual processing of disyllabic German words and pseudowords. Twelve dyslexic and 13 nondyslexic adults performed a lexical decision task while stimuli were presented unimodally (either aurally or visually) or bimodally (audiovisually simultaneously).The behavioral data collected during the experiment evidenced more accurate processing for bimodally than for unimodally presented stimuli irrespective of group. Words were processed faster than pseudowords. Notably, no group differences have been found for either accuracy or for reaction times. With respect to brain responses, nondyslexic compared to dyslexic adults elicited stronger hemodynamic responses in the leftward supramarginal gyrus (SMG), as well as in the right hemispheric superior temporal sulcus (STS). Furthermore, dyslexic compared to nondyslexic adults showed reduced responses to only aurally presented signals and enhanced hemodynamic responses to audiovisual, as well as visual stimulation in the right anterior insula.Our behavioral results evidence that the two groups easily identified the two-syllabic proper nouns that we provided them with. Our fMRI results indicate that dyslexics show less neuronal involvement of heteromodal and extrasylvian regions, namely, the STS, SMG, and insula when decoding phonological information. We posit that dyslexic adults evidence deficient functioning of word processing, which could possibly be attributed to deficits in phoneme to grapheme mapping. This problem may be caused by impaired audiovisual processing in multimodal areas.     

The neurobiology of the stress-resistant brain

The 2010 Neurobiology of Stress Workshop brought together scientists from all over the world to share and discuss their results from studies examining the consequences of acute, repeated, and chronic stressor exposure on health and disease. Session IV entitled "The neurobiology of the stress-resistant brain" explored how we can intervene to promote stress resistance and stress resilience. Four scientists, who explore this topic from unique and convergent perspectives, presented their experimental results derived from studies in rat (Fleshner and Maier), non-human primates (Lyons), and human (Raskind). Summaries of each presentation, supporting publications, and overall take-home messages from the session are presented.     

The role of anxiety and perspective-taking strategy on affective empathic responses

Empathy is an important pro-social behaviour critical to a positive client–therapist relationship. Therapist anxiety has been linked to reduced ability to empathise and lower client satisfaction with therapy. However, the nature of the relationship between anxiety and empathy is currently unclear. The current study investigated the effect of experimentally-induced anxiety on empathic responses elicited during three different perspective-taking tasks. Perspective-taking was manipulated within-subjects with all participants (N = 52) completing imagine-self, imagine-other and objective conditions. A threat of shock manipulation was used to vary anxiety between-subjects. Participants in the threat of shock condition reported higher levels of anxiety during the experiment and lower levels of empathy-related distress for the targets than participants in the control condition. Perspective-taking was associated with higher levels of empathy-related distress and concern compared to the objective condition. The present results suggest that perspective-taking can to a large extent mitigate the influence of heightened anxiety on an individual’s ability to empathise.     

Construing the Meaning of Authenticity in University Teaching: Comparing Explicit to Implicit Theories

Although recent literature on university teaching highlights “authenticity” as an important concept, the meaning of this complex notion remains elusive. Sternberg (1990 Sternberg, R. 1990. “Wisdom and its relations to intelligence and creativity”. In Wisdom, its nature, origins, and development, Edited by: Sternberg, R. J. 142–159. Cambridge, , UK: Cambridge University Press.  [Google Scholar]) proposed that we gain deeper insight into phenomena that are assumed to be of profound meaning but remain insufficiently understood if, alongside explicit theories of experts, we also consider the implicit theories of nonspecialists. This repertory grid study explored with a sample of lecturers their personal conceptions of authenticity in teaching and how these compare to explicit theories developed by educationalists and philosophers. Implications for theory and professional development, as well as future directions for research, are offered.     

Zur Ontogenese aggressiven Verhaltens

The present article reviews current etiological approaches to the origin of violence. In a wide range of empirical research ample results have been found on the causes of violence in many different disciplines like social sciences, psychology, psychotherapy, and neurobiology/neurophysiology. However, an integrative view is still missing. Current knowledge suggests a complex interaction of genetic, physiological, developmental psychological, personality-related, familial and social factors in shaping an individuals’ disposition to engage in physical violence. Accordingly, interventions for reducing violence have to be multidimensional in nature.     

Electrophysiological markers of visual dimension changes and response changes

In cross-dimensional visual search tasks, target discrimination is faster when the previous trial contained a target defined in the same visual dimension as the current trial. The dimension-weighting account (DWA; A. Found & H. J. Müller, 1996) explains this intertrial facilitation by assuming that visual dimensions are weighted at an early perceptual stage of processing. Recently, this view has been challenged by models claiming that intertrial facilitation effects are generated at later stages that follow attentional target selection (K. Mortier, J. Theeuwes, & P. A. Starreveld, 2005). To determine whether intertrial facilitation is generated at a perceptual stage, at the response selection stage, or both, the authors focused on specific event-related brain potential components (directly linkable to perceptual and response-related processing) during a compound search task. Visual dimension repetitions were mirrored by shorter latencies and enhanced amplitudes of the N2-posterior- contralateral, suggesting a facilitated allocation of attentional resources to the target. Response repetitions and changes systematically modulated the lateralized readiness potential amplitude, suggesting a benefit from residual activations of the previous trial biasing the correct response. Overall, the present findings strengthen the DWA by indicating a perceptual origin of dimension change costs in visual search.     

Neurophysiological measures of involuntary and voluntary attention allocation and dispositional differences in need for cognition

Need for cognition (NFC) refers to stable individual differences in the intrinsic motivation to engage in and enjoy effortful cognitive endeavors and has been a useful predictor of dispositional differences in information processing. Although cognitive resource allocation conceptualized as cognitive effort is assumed to be the key mediator of NFC-specific processing, to date no research has systematically addressed its underpinnings. Using a neurocognitive paradigm and recording event-related potentials associated with bottom-up and top-down-driven aspects of attention, the present research contributes to filling this gap. In Study 1, high-NFC individuals showed larger P3a amplitudes to contextually novel events, indicating greater involuntary (automatic) attention allocation. This effect was replicated in Study 2, where NFC also was positively correlated with the P3b to target stimuli, indicating voluntary (controlled) processes of attention allocation. Thus, our findings provide first evidence for neurophysiological correlates of NFC and can improve the understanding of NFC-specific processing.     

Similarities and differences in contingency experiences of 3-month-olds across sociocultural contexts

In this study we analyzed similarities and differences in the contingency experiences of 159 three-month-olds from 6 sociocultural contexts. Across contexts, caretakers responded with similar overall contingency levels, vocalizations provided the dominant response as well as the most salient signal, and there was a relative signal-response correspondence. With two exceptions, infants in all samples most often got responses addressing their sense of hearing, followed by the sense of touch and then sight. In response to nondistress vocalizations, infants from independent contexts (Berlin, Los Angeles) experienced more contingent responses addressing their sense of sight than infants from autonomous-related (Beijing, Delhi, urban Nso from Cameroon) or interdependent contexts (rural Nso). Rural Nso infants experienced more contingent responses addressing their sense of touch than infants from all other but the Los Angeles sample. These results support the interpretation of contingent responsiveness as a part of the intuitive parenting program that manifests differentially depending on culture-specific emphases on distal and proximal caretaking.     

Paranoia and conspiracy thinking of Jews, Arabs, Germans, and Russians in a Polish sample

The study examined the relationship between paranoia and conspiracy thinking of Jews, Arabs, Germans, and Russians among 50 university student volunteers using Fenigstein and Vanable's Paranoia Scale for nonclinical populations and the Conspiracy Beliefs Scale. The scores for conspiracy stereotypes of all the nationalities were positively correlated with paranoia.