EEG theta/beta ratio as a potential biomarker for attentional control and resilience against deleterious effects of stress on attention

Anxious stress compromises cognitive executive performance. This occurs, for instance, in cognitive performance anxiety (CPA), in which anxiety about one’s cognitive performance causes that performance to actually deteriorate (e.g., test anxiety). This is thought to result from a prefrontal cortically (PFC) mediated failure of top-down attentional control over stress-induced automatic processing of threat-related information. In addition, stress-induced increased catecholamine influx into the PFC may directly compromise attentional function. Previous research has suggested that the ratio between resting state electroencephalographic (EEG) low- and high-frequency power (the theta/beta ratio) is related to trait attentional control, which might moderate these effects of stress on attentional function. The goals of the present study were to test the novel prediction that theta/beta ratio moderates the deleterious effects of CPA-like anxious stress on state attentional control and to replicate a previous finding that the theta/beta ratio is related to self-reported trait attentional control. After recording of baseline frontal EEG signals, 77 participants performed a stress induction or a control procedure. Trait attentional control was assessed with the Attentional Control Scale, whereas stress-induced changes in attentional control and anxiety were measured with self-report visual analogue scales. The hypothesized moderating influence of theta/beta ratio on the effects of stress on state attentional control was confirmed. Theta/beta ratio explained 28% of the variance in stress-induced deterioration of self-reported attentional control. The negative relationship between theta/beta ratio and trait attentional control was replicated (r = –.33). The theta/beta ratio reflects, likely prefrontally mediated, attentional control, and should be a useful biomarker for the study of CPA and other anxiety–cognition interactions.     

Context Matters: Promises and Concerns Regarding Nanotechnologies for Water and Food Applications

Expectations in the form of promises and concerns contribute to the sense-making and valuation of emerging nanotechnologies. They add up to what we call ‘de facto assessments’ of novel socio-technical options. We explore how de facto assessments of nanotechnologies differ in the application domains of water and food by examining promises and concerns, and their relations in scientific discourse. We suggest that domain characteristics such as prior experiences with emerging technologies, specific discursive repertoires and user-producer relationships, play a key role in framing expectations of nanotechnology-enabled options. The article concludes by suggesting that domain-specific discourses may lead to undesirable lock-ins into specific de facto assessments pre-structuring anticipatory strategies of actors.     

Age-related changes in brain–behaviour relationships: Evidence from event-related functional MRI studies

A fundamental aim of studies in neurocognitive ageing is to understand age-related changes in brain–behaviour relationships. Neuroimaging techniques such as positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) can be used for observation of these age-related changes only if the assumption of age-equivalent relations between neural activity and haemodynamic activity is valid. In one study, we characterised age-related differences in the coupling of the haemodynamic response to neural activity and found greater voxel-wise noise in older than in younger adults, but age-equivalent signal magnitude. These results suggested that alternative techniques may be necessary for analysing age-related differences in neuroimaging data. In a second study, we utilised one alternative method for comparing fMRI activation between younger and older adults performing a working memory (WM) task. Across three experiments, the results suggested that age-related functional changes in fMRI activation can be isolated to dorsolateral prefrontal cortex (PFC) during memory retrieval. These results suggest a plausible model for WM decline with normal ageing. In a third study we propose and test a model of age-related PFC dysfunction that may account for these and other age-related differences in cognitive performance.     

An enhanced examination of Holland's consistency and differentiation hypotheses

The research support for Holland's concepts of consistency and differentiation has been equivocal (Nauta, 2010). To provide a reexamination of these concepts, a new method of operationalizing Holland's constructs of consistency and differentiation using the cosine fit function to the RIASEC score profile is proposed. The relation of these new indices to career certainty, congruence and the moderation of the congruence–certainty relation were examined in a sample of 118 college students (study 1). Support was found for the superiority of the cosine fit definitions of consistency and differentiation over the traditional representations. The cosine fit indices were further examined in a second study on 167 adults examining interest stability over 15 years. The cosine fit indices of consistency and differentiation were related to both occupational stability over 15 years and career satisfaction. The results suggest that the concepts of differentiation and consistency may still have merit but only with more exact methods of specification.     

Assessing Aberrant Personality in Managerial Coaching: Measurement Issues and Prevalence Rates across Employment Sectors

The convergent and discriminant validity of two methods to assess a broad spectrum of aberrant personality tendencies was examined in a large sample of managers who were administered the NEO‐PI‐R (N = 11 862) and the Hogan Development Survey (N = 6774) in the context of a professional development assessment. Five‐Factor Model (FFM) aberrant compounds, defined as linear combinations of NEO‐PI‐R facets, converged for the antisocial, borderline, histrionic, avoidant and obsessive–compulsive tendencies with their respective Hogan Development Survey counterparts. Alternative linear FFM combinations did improve convergent results for the schizoid and obsessive–compulsive pattern. Risk for various aberrant tendencies was roughly equal across different employment sectors, with a higher prevalence of borderline, avoidant and dependent tendencies in the legal and more histrionic tendencies in the retail sector. Adopting FFM aberrant compound cut‐offs developed for coaching purposes to flag at risk individuals showed that 20% to 25% of all managers qualified for at least one and 10% to 15% were flagged as at risk for two or more aberrant tendencies. The theoretical implications and the repercussions of this research for the design of professional development and coaching trajectories are discussed. Copyright © 2013 European Association of Personality Psychology     

Observed need-supportive and need-thwarting teaching behavior in physical education: Do teachers' motivational orientations matter?

ObjectivesThe behaviors physical education (PE) teachers engage in affect a number of important student outcomes. Therefore, it is essential to study the antecedents of these teaching behaviors.Design and methodGrounded in Self-Determination Theory, this cross-sectional study explored the relations between PE teachers' autonomous and controlled motivational orientations and a variety of observed need-supportive and need-thwarting teaching behaviors in 79 PE classes by means of regression analyses.ResultsControl-oriented teachers made less use of an overall need-supportive teaching style and provided less structure during the activity in particular, while they engaged in more need-thwarting teaching behavior in general and in more controlling and cold teaching behavior in particular.ConclusionAlthough autonomy-oriented teachers tended to display the opposite pattern of correlates, these associations were non-significant. As the current findings suggest that teachers' actual teaching behavior is rooted at least partly in their own dispositional motivational orientation, they may inform the design of effective continuous professional development programs and interventions aimed at enhancing teachers' need-supportive teaching. Directions for future research are discussed.     

The impact of need for closure on conservative beliefs and racism: differential mediation by authoritarian submission and authoritarian dominance

The present study explores the influence of need for closure as well as authoritarian submission (Right-Wing Authoritarianism [RWA]) and authoritarian dominance (Social Dominance Orientation [SDO]) on the genesis of conservative beliefs and racism. For this purpose, two structural equation models were compared. In Model 1, RWA and SDO were entered as independent variables and the need for closure facets Decisiveness and Need for Simple Structure acted as mediator variables. In Model 2, the need for closure facets served as independent variables and RWA and SDO acted as mediators. In two student samples (Sample 1, N = 399, Sample 2, N = 330) and one adult sample (Sample 3, N = 379), Model 2 showed superior fit to the data. These results corroborate the hypothesis that authoritarianism should be interpreted in terms of generalized beliefs rather than in terms of personality characteristics. In addition, analyses show that the effects of Need for Simple Structure on conservative beliefs and racism are fully mediated by RWA but only partly by SDO. These results suggest a differential genesis of RWA and SDO.     

The congruence of personal life values and work attitudes

The authors examined the congruence between an individual's personal-life value placement and attitudes at work. Specifically, they examined how people place value on work, family, religion, and themselves (the personal life values), respectively, and how that choice influences affect, commitment, conscientiousness, and honesty in the workplace (attitudes at work). The authors also examined and tested exploratory hypotheses by using both simple correlations and multiple linear regression analyses. Results suggested varying relationships between value placement and work attitudes. The authors discussed implications and directions for future research.     

Sound and vision

When a brief flash appears at the same position as a moving object, the flash is perceived to lag behind. This so-called flash-lag effect tells us something about the perception of space and time: where is the moving object when the flash appears? A recent paper by Alais and Burr on auditory and crossmodal flash-lag effects indicates that our (often implicit) models of the perception of space and time might be flawed.