In recent years the study of resting state brain networks (RSNs) has become an important area of neuroimaging. The majority of studies have used functional magnetic resonance imaging (fMRI) to ...measure temporal correlation between blood-oxygenation-level–dependent (BOLD) signals from different brain areas. However, BOLD is an indirect measure related to hemodynamics, and the electrophysiological basis of connectivity between spatially separate network nodes cannot be comprehensively assessed using this technique. In this paper we describe a means to characterize resting state brain networks independently using magnetoencephalography (MEG), a neuroimaging modality that bypasses the hemodynamic response and measures the magnetic fields associated with electrophysiological brain activity. The MEG data are analyzed using a unique combination of beamformer spatial filtering and independent component analysis (ICA) and require no prior assumptions about the spatial locations or patterns of the networks. This method results in RSNs with significant similarity in their spatial structure compared with RSNs derived independently using fMRI. This outcome confirms the neural basis of hemodynamic networks and demonstrates the potential of MEG as a tool for understanding the mechanisms that underlie RSNs and the nature of connectivity that binds network nodes.
Student engagement is an important factor for learning outcomes in higher education. Engagement with learning at campus-based higher education institutions is difficult to quantify due to the variety ...of forms that engagement might take (e.g. lecture attendance, self-study, usage of online/digital systems). Meanwhile, there are increasing concerns about student wellbeing within higher education, but the relationship between engagement and wellbeing is not well understood. Here we analyse results from a longitudinal survey of undergraduate students at a campus-based university in the UK, aiming to understand how engagement and wellbeing vary dynamically during an academic term. The survey included multiple dimensions of student engagement and wellbeing, with a deliberate focus on self-report measures to capture students' subjective experience. The results show a wide range of engagement with different systems and study activities, giving a broad view of student learning behaviour over time. Engagement and wellbeing vary during the term, with clear behavioural changes caused by assessments. Results indicate a positive interaction between engagement and happiness, with an unexpected negative relationship between engagement and academic outcomes. This study provides important insights into subjective aspects of the student experience and provides a contrast to the increasing focus on analysing educational processes using digital records.
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Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Sustained mass behaviour change is needed to tackle the COVID‐19 pandemic, but many of the required changes run contrary to existing social norms (e.g., physical closeness with in‐group members). ...This paper explains how social norms and social identities are critical to explaining and changing public behaviour. Recommendations are presented for how to harness these social processes to maximise adherence to COVID‐19 public health guidance. Specifically, we recommend that public health messages clearly define who the target group is, are framed as identity‐affirming rather than identity‐contradictory, include complementary injunctive and descriptive social norm information, are delivered by in‐group members and that support is provided to enable the public to perform the requested behaviours.
Research in the social identity tradition acknowledges the multiplicity of our identities and the implications that identity compatibility has for our health and well‐being. However, current measures ...of multiple group membership have not yet captured the richness and complexity of our social identity networks at the wider sample level, and data regarding the different behaviours typically associated with different group memberships are scarce. Adopting a network approach, we explore the co‐occurrence of different group memberships within an individual (identity‐by‐identity network), the behaviours that are shared among identities (behaviour‐by‐identity network), and whether identities that are shared also share common behaviours (identity‐by‐behaviour network). An online survey asked participants (N = 286) to list the groups they are part of, as well as the behaviours viewed to be typical of group members. The networks identified several identities and behaviours to significantly co‐occur at a rate both higher and lower than chance. Networks were found to be low in modularity; there was no evidence of clustering within the data. Permutation analyses demonstrated the overall structure of the networks to be significantly different than expected by chance. The co‐occurrences identified serve as a meaningful resource for those conducting research into identities, group norms and their associated behaviours.
The current research uses an extended theory of planned behavior (TPB) model to predict Facebook users' (
= 376) intentions to protect their privacy online. It aims to replicate and extend Saeri et ...al. (2014) who found partial support for an extended TPB model that included descriptive norms, perceived risk, and trust. Facebook users completed an online questionnaire assessing attitudes, norms (subjective and group), perceived behavioral control (PBC), perceived risk, trust, privacy concerns, and intentions to protect their privacy online. Results revealed that attitudes, subjective norms, and PBC (i.e. the TPB) predicted online privacy intentions, as well as descriptive group norms and privacy concerns. However, perceived risk, trust, and injunctive group norms were not significant unique predictors of online privacy intentions. The implications for understanding influences on individuals' willingness to protect their privacy online are discussed.
Two experiments examine the interplay of injunctive and descriptive norms on intentions to engage in pro-environmental behavior. In Experiment 1, Australian participants were exposed to supportive or ...unsupportive group descriptive and injunctive norms about energy conservation. Results revealed that a conflict between the group-level injunctive and descriptive norm was associated with weaker behavioral intentions: The beneficial effects of a supportive injunctive norm were undermined when presented with an unsupportive descriptive norm. Experiment 2 replicated this effect in both a Western (UK) and non-Western (China) context, and found that the extent to which norms were aligned or not determined intentions even after controlling for attitudes, perceptions of control, and interpersonal-level injunctive and descriptive norms. These experiments demonstrate that conflict between injunctive and descriptive norms leads to weaker intentions to engage in pro-environmental behavior, highlighting the need to consider the interplay between injunctive and descriptive norms to understand how norms influence behavioral intentions.
► Two experiments examine the interplay of injunctive and descriptive norms. ► Conflict between the injunctive and descriptive norm produces weaker intentions. ► This is true in individualist (Australia; UK) and collectivist (China) cultures.
Admiration: A Conceptual Review Onu, Diana; Kessler, Thomas; Smith, Joanne R.
Emotion Review,
07/2016, Letnik:
8, Številka:
3
Journal Article
Recenzirano
Odprti dostop
Admiration is thought to have essential functions for social interaction: it inspires us to learn from excellent models, to become better people, and to praise others and create social bonds. In ...intergroup relations, admiration for other groups leads to greater intergroup contact, cooperation, and help. Given these implications, it is surprising that admiration has only been researched by a handful of authors. In this article we review the literature, focusing on the definition of admiration, links to related emotions, measurement, antecedents, and associated behaviors. We propose a conceptual model of admiration that highlights admiration’s function for approaching and emulating successful models, thus contributing to social learning at the interpersonal level and to cultural transmission at the group and societal level.
Past research on the social identity approach to attitude–behaviour relations has operationalized group norms as a mixture of both descriptive information (i.e. what most people do themselves) and ...injunctive information (i.e. what most people approve of). Two experiments (Study 1=185 participants; Study 2=238 participants) were conducted to tease apart the relative effects of descriptive and injunctive group norms. In both studies, university students' attitudes towards current campus issues were obtained, the descriptive and injunctive group norms were manipulated, and participants' post‐manipulation attitudes, behavioural willingness, and behaviour were assessed. Study 2 also examined the role of norm source (i.e. in‐group vs. out‐group injunctive and descriptive norms). In both studies, the injunctive and descriptive in‐group norms interacted significantly to influence attitudes, behavioural willingness, and behaviour. Study 2 revealed that out‐group norms were largely ineffective. The research illustrates that in‐groups interactively influence decisions, not only by what they say, but also by what they do, and asserts the value of considering the interaction of descriptive and injunctive norms in accounts of normative influence.
Cisplatin-induced nephrotoxicity limits its use in many cancer patients. The expression of enzymes involved in polyamine catabolism, spermidine/spermine N1-acetyltransferase (SSAT) and spermine ...oxidase (SMOX) increase in the kidneys of mice treated with cisplatin. We hypothesized that enhanced polyamine catabolism contributes to tissue damage in cisplatin acute kidney injury (AKI). Using gene knockout and chemical inhibitors, the role of polyamine catabolism in cisplatin AKI was examined. Deficiency of SSAT, SMOX or neutralization of the toxic products of polyamine degradation, H2O2 and aminopropanal, significantly diminished the severity of cisplatin AKI. In vitro studies demonstrated that the induction of SSAT and elevated polyamine catabolism in cells increases the phosphorylation of eukaryotic translation initiation factor 2α (eIF2α) and enhances the expression of binding immunoglobulin protein BiP/GRP78) and CCAAT-enhancer-binding protein homologous protein (CHOP/GADD153). The increased expression of these endoplasmic reticulum stress response (ERSR) markers was accompanied by the activation of caspase-3. These results suggest that enhanced polyamine degradation in cisplatin AKI may lead to tubular damage through the induction of ERSR and the consequent onset of apoptosis. In support of the above, we show that the ablation of the SSAT or SMOX gene, as well as the neutralization of polyamine catabolism products modulate the onset of ERSR (e.g. lower BiP and CHOP) and apoptosis (e.g. reduced activated caspase-3). These studies indicate that enhanced polyamine catabolism and its toxic products are important mediators of ERSR and critical to the pathogenesis of cisplatin AKI.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
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