Hippocampal low-frequency stimulation and chronic mild stress similarly disrupt fear extinction memory in rats

Disruptions of fear extinction-related potentiation of synaptic efficacy in the connection between the hippocampus (HPC) and the medial prefrontal cortex (mPFC) have been shown to impair the recall of extinction memory. This study was undertaken to examine if chronic mild stress (CMS), which is known to alter induction of HPC–mPFC long-term potentiation, would also interfere with both extinction-related HPC–mPFC potentiation and extinction memory. Following fear conditioning (5 tone-shock pairings), rats were submitted to fear extinction (20 tone-alone presentations), which produced an increase in the amplitude of HPC–mPFC field potentials. HPC low-frequency stimulation (LFS), applied immediately after training, suppressed these changes and induced fear return during the retention test (5 tone-alone presentations). CMS, delivered before fear conditioning, did not interfere with fear extinction but blocked the development of extinction-related potentiation in the HPC–mPFC pathway and impaired the recall of extinction. These findings suggest that HPC LFS may provoke metaplastic changes in HPC outputs that may mimic alterations associated with a history of chronic stress.     

The Cerebellum in Frontotemporal Dementia: a Meta-Analysis of Neuroimaging Studies

Neuropsychology Review - Frontotemporal dementia (FTD) is a neurodegenerative brain disorder primarily affecting the frontal and/or temporal lobes. Three main subtypes have been recognized:...     

The Ethics of Smart Stadia: A Stakeholder Analysis of the Croke Park Project

Science and Engineering Ethics - The development of “smart stadia”, i.e. the use of “smart technologies” in the way sports stadia are designed and managed, promises to...     

External details revisited – A new taxonomy for coding ‘non-episodic’ content during autobiographical memory retrieval

Autobiographical memory (ABM) is typically held to comprise episodic and semantic elements, with the vast majority of studies to date focusing on profiles of episodic details in health and disease. In this context, ‘non-episodic’ elements are often considered to reflect semantic processing or are discounted from analyses entirely. Mounting evidence suggests that rather than reflecting one unitary entity, semantic autobiographical information may contain discrete subcomponents, which vary in their relative degree of semantic or episodic content. This study aimed to (1) review the existing literature to formally characterize the variability in analysis of ‘non-episodic’ content (i.e., external details) on the Autobiographical Interview and (2) use these findings to create a theoretically grounded framework for coding external details. Our review exposed discrepancies in the reporting and interpretation of external details across studies, reinforcing the need for a new, consistent approach. We validated our new external details scoring protocol (the ‘NExt’ taxonomy) in patients with Alzheimer's disease (n = 18) and semantic dementia (n = 13), and 20 healthy older Control participants and compared profiles of the NExt subcategories across groups and time periods. Our results revealed increased sensitivity of the NExt taxonomy in discriminating between ABM profiles of patient groups, when compared to traditionally used internal and external detail metrics. Further, remote and recent autobiographical memories displayed distinct compositions of the NExt detail types. This study is the first to provide a fine-grained and comprehensive taxonomy to parse external details into intuitive subcategories and to validate this protocol in neurodegenerative disorders.     

Growth and Decline of Evangelicals,Fundamentalists, Pentecostals,and Charismatics in Switzerland 1970–2013

This article describes and explains patterns of growth and decline undergone by evangelical, fundamentalist, and Pentecostal/Charismatic (EFPC) denominations in Switzerland from 1970 to 2013. We combine data from different censuses, membership registers of denominations, and a National Congregation Study (NCS) to establish and explain patterns of growth and decline. Our main results are that (1) the overall EFPC milieu has grown since the 1970s; (2) the growth is predominantly caused by a rather strong increase in membership of Pentecostal/Charismatic denominations. In contrast, evangelical denominations are overall rather stable, while fundamentalists seem to be in decline; (3) EFPC growth is not related to deprivation orientation, strictness, or socialization efforts, but to recruitment focus and spontaneity of ritual. We discuss these findings in the light of different theories.     

Should supervisors communicate goals or visions? The moderating role of subordinates' psychological distance

There is an ongoing debate about how supervisors should communicate desired end‐states to subordinates, that is, whether they should set concrete goals (according to goal setting theory) or communicate abstract visions (according to transformational leadership theory). In this paper, we draw on construal level theory (CLT) to reconcile both views and develop a model of when supervisors communicating concrete goals versus abstract visions are seen as more effective. According to CLT, being psychologically removed from (vs. near to) an event or object makes people construe the event or object in a more abstract (vs. concrete) way, which, in turn, leads people to process abstract (vs. concrete) information more fluently and thus evaluate the sender of this information more favorably. Accordingly, supervisor effectiveness may be higher in conditions where communication and psychological distance to the supervisor converge (vision/far and goals/close) rather than diverge (vision/close and goals/far). We tested this hypothesis in two experiments, using different operationalizations of psychological distance. In these studies, we found supervisor effectiveness to be higher when vision was communicated at a far versus near distance and goals were communicated at a near versus far distance.     

Applicant Selection Expectations: Validating a multidimensional measure in the military

Research has suggested the importance of applicants' expectations of forthcoming selection procedures in predicting how applicants react to selection procedures. Validated measures of selection expectations are still scarce, however. This study reports on the validation of the Applicant Expectation Survey (AES), intended to measure applicants' expectations of forthcoming selection procedures. The AES was validated using three military applicant samples and showed sound psychometric properties (i.e., reliability, measurement invariance, discriminant validity) for a five‐factorial oblique structure consisting of 26 items. The five factors (i.e., Warmth/respect, Chance to demonstrate potential, Difficulty of faking, Unbiased assessment, Feedback) were positively related to several organizational outcome measures and to applicants' perceptions of the selection procedure, providing evidence for the predictive validity of the AES.     

Selection Test Anxiety: Investigating applicants' self‐ vs other‐referenced anxiety in a real selection setting

Test anxiety has received limited attention in personnel selection research, although it may impair the test performance of applicants. This paper describes the development and validation of a new two‐dimensional measure of applicants' test anxiety, namely the Self‐ versus Other‐Referenced Anxiety Questionnaire (SOAQ), that embeds worrisome cognitions of anxious applicants in the social evaluative context of ‘self’ (Self‐Referenced Anxiety) and ‘significant others’ (Other‐Referenced Anxiety). An exploratory factor analysis (calibration sample), followed by a confirmatory factor analysis (validation sample) and correlations with several proximal and distal theoretical constructs indicated satisfactory psychometric properties and construct validity for both SOAQ scales. Structural equation modeling further showed a differential impact of Self‐ and Other‐Referenced Anxiety on applicants' test performance within a real personnel selection context. The scientific and practical relevance of these findings are discussed.