1,199 research outputs found

    Mental contrasting as a behaviour change technique: a systematic review protocol paper of effects, mediators and moderators on health

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    Background Mental contrasting is a self-regulation strategy that is required for strong goal commitment. In mental contrasting, individuals firstly imagine a desired future or health goal that contrasted with the reality proceeding the goal state, which after reflection is viewed as an obstacle (Oettingen et al. J Pers Soc Psychol 80:736–753, 2001). Mentally contrasting a positive future with reality enables individuals to translate positive attitudes and high efficacy into strong goal commitment. Methods A systematic review of the literature is proposed to explore the efficacy of mental contrasting as a behaviour change technique (Michie et al., Ann Behav Med 46: 81-95, 2013) for health. The review also aims to identify the effects of mental contrasting on health-related behaviour, as well as identifying mediator and moderator variables. Discussion This will be the first systematic review of mental contrasting as a health behaviour change technique. With sufficient studies, a meta-analysis will be conducted with sensitivity and sub group analyses. If meta-analysis is not appropriate, a narrative synthesis of the reviewed studies will be conducted. Systematic review registration Review protocol registered on PROSPERO reference CRD42016034202.N/

    Development of numerical models for Monte Carlo simulations of Th-Pb fuel assembly

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    The thorium-uranium fuel cycle is a promising alternative against uranium-plutonium fuel cycle, but it demands many advanced research before starting its industrial application in commercial nuclear reactors. The paper presents the development of the thorium-lead (Th-Pb) fuel assembly numerical models for the integral irradiation experiments. The Th-Pb assembly consists of a hexagonal array of ThO2 fuel rods and metallic Pb rods. The design of the assembly allows different combinations of rods for various types of irradiations and experimental measurements. The numerical model of the Th-Pb assembly was designed for the numerical simulations with the continuous energy Monte Carlo Burnup code (MCB) implemented on the supercomputer Prometheus of the Academic Computer Centre Cyfronet AGH

    De ratione, qua calomelas mutetur in tractu intestinali : Dissertatio inauguralis

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    http://tartu.ester.ee/record=b1911499~S1*es

    Mental contrasting for health behaviour change: a systematic review and meta-analysis of effects and moderator variables

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    Mental contrasting is a self-regulation imagery strategy that involves imagining a desired future and mentally contrasting it with the present reality, which is assumed to prompt the individual to realise that action is required to achieve the desired future. Research has combined mental contrasting with implementation intentions (MCII) (‘if-then’ plans), which is hypothesised to strengthen the effects. A systematic review was conducted to evaluate the effectiveness of mental contrasting for improving health-related behaviours. A meta-analysis (N = 1528) using random effects modelling found a main effect of mental contrasting on health outcomes, adjusted Hedges’ g = 0.28 (SE = .07), 95% CI [0.13–0.43], p < .001 at up to four weeks, and an increased effect at up to three months (k = 5), g = 0.38 (SE = 0.6), CI [0.20–0.55], p < .001. The combination of mental contrasting with implementation intentions (MCII; k = 7) showed a similar effect, g = 0.28, CI [0.14–0.42], p < .001. Mental contrasting shows promise as a brief behaviour change strategy with a significant small to moderate-sized effect on changing health behaviour in the short-term. Analysis on a small subset of studies suggested that the addition of implementation intentions (MCII) did not further strengthen the effects of mental contrasting on health behaviours, although additional studies are needed.N/

    Mental Contrasting of a Negative Future with a Positive Reality Regulates State Anxiety

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    Mental contrasting of a desired future with impeding reality is a self-regulatory strategy fostering goal pursuit. However, there is little research on mental contrasting of a negative future with a positive reality. We conducted two experiments, each with four experimental conditions, investigating the effects of mental contrasting a negative future with a positive reality on state anxiety: participants who mentally contrasted a negative future regarding a bacterial epidemic (Study 1, N = 199) or an idiosyncratic negative event (Study 2, N = 206) showed less state anxiety than participants who imagined the negative future only or who reverse contrasted; participants who mentally elaborated on the positive reality also showed less state anxiety. Our findings suggest that mental contrasting of a negative future helps people reduce disproportional anxiety regarding a negative future

    Boosted by closure! Regulatory focus predicts persistence and effort mobilisation in the aftermath of task-unrelated goal closure

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    Past research has found that regulatory closure, that is, successful goal striving regulated either under a promotion or prevention focus, has important consequences in terms of motivational activation and mobilisation of cognitive resources in subsequent tasks, but it mostly investigated motivation in the same or similar tasks to the one for which closure was achieved. Drawing from an energisation-deactivation hypothesis, we investigated the effect of closure on performance and persistence in unrelated subsequent cognitive tasks. Across four studies, we found that promotion closure had an energising effect leading to: quicker decision times in lexical tasks (Studies 1-2), increased persistence and greater originality (Study 3), and greater visuospatial memory performance (Study 4). In contrast, prevention closure had a deactivating effect leading to reduced performance and persistence. No systematic differences arose in situations of non-closure. We discuss results and implications with respect to both regulatory closure and regulatory fit theoretical approaches
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