Search results for " suppression"

Threatening information in social phobia : inadequate self, social evaluation and the effect of task repetition

2002

Nitrogen uptake and nitrogen fertilizer recovery in old and modern wheat genotypes grown in the presence or absence of interspecific competition

2015

Choosing genotypes with a high capacity for taking up nitrogen (N) from the soil and the ability to efficiently compete with weeds for this nutrient is essential to increasing the sustainability of cropping systems that are less dependent on auxiliary inputs. This research aimed to verify whether differences exist in N uptake and N fertilizer recovery capacity among wheat genotypes and, if so, whether these differences are related to a different competitive ability against weeds of wheat genotypes. To this end, 12 genotypes, varying widely in morphological traits and year of release, were grown in the presence or absence of interspecific competition (using Avena sativa L. as a surrogate wee…

Object Localization Does Not Imply Awareness of Object Category at the Break of Continuous Flash Suppression

2017

In continuous flash suppression (CFS), a dynamic noise masker, presented to one eye, suppresses conscious perception of a test stimulus, presented to the other eye, until the suppressed stimulus comes to awareness after few seconds. But what do we see breaking the dominance of the masker in the transition period? We addressed this question with a dual-task in which observers indicated (i) whether the test object was left or right of the fixation mark (localization) and (ii) whether it was a face or a house (categorization). As done recently Stein et al. (2011a), we used two experimental varieties to rule out confounds with decisional strategy. In the terminated mode, stimulus and masker wer…

Jet-like correlations with neutral pion triggers in pp and central Pb–Pb collisions at 2.76 TeV

2016

Physics letters / B B763, 238 - 250 (2016). doi:10.1016/j.physletb.2016.10.048

Quarkonium suppression in heavy-ion collisions: an open quantum system approach

2016

We address the evolution of heavy-quarkonium states in an expanding quark-gluon plasma by implementing effective field theory techniques in the framework of open quantum systems. In this setting we compute the nuclear modification factors for quarkonia that are $S$-wave Coulombic bound states in a strongly-coupled quark-gluon plasma. The calculation is performed at an accuracy that is leading-order in the heavy-quark density expansion and next-to-leading order in the multipole expansion. The quarkonium density-matrix evolution equations can be written in the Lindblad form, and, hence, they account for both dissociation and recombination. Thermal mass shifts, thermal widths and the Lindblad …

Quantum and classical dynamics of heavy quarks in a quark-gluon plasma

2018

We derive equations for the time evolution of the reduced density matrix of a collection of heavy quarks and antiquarks immersed in a quark gluon plasma. These equations, in their original form, rely on two approximations: the weak coupling between the heavy quarks and the plasma, the fast response of the plasma to the perturbation caused by the heavy quarks. An additional semi-classical approximation is performed. This allows us to recover results previously obtained for the abelian plasma using the influence functional formalism. In the case of QCD, specific features of the color dynamics make the implementation of the semi-classical approximation more involved. We explore two approximate…

The role of thought suppression and psychological inflexibility in older family caregivers’ psychological symptoms and quality of life

2021

Abstract Background Family caregivers often report high levels of distress, including depressive symptoms, anxiety, and reduced quality of life. There is a need for a greater understanding of the factors influencing, explaining, and maintaining psychological distress in family caregivers. Aim The aim of this study was to examine whether avoidance strategies such as thought suppression (WBSI), psychological inflexibility (AAQ-II), and, and caregiver experiential avoidance (EACQ) predict psychological distress (BDI-II, GAD-7) and quality of life (WHOQOL) in family caregivers aged 60 and over. We hypothesized that these avoidance strategies would explain elevated levels of psychological sympto…

Supported Web-Based Acceptance and Commitment Therapy for Older Family Caregivers (CareACT) Compared to Usual Care

2021

Objectives: The objective of the present study was to investigate whether an acceptance and commitment therapy (ACT)-based web-intervention (Group 1, CareACT), or a standardized rehabilitation in a rehabilitation center (Group 2) was effective in enhancing the psychological well-being of family caregivers aged 60 and over compared to support provided by voluntary caregiver associations (Group 3). Methods: Altogether, 149 family caregivers participated in this quasi-experimental study. Primary outcome measure was depression. Secondary outcomes included anxiety, sense of coherence, quality of life, psychological flexibility, experiential avoidance, and thought suppression. The questionnaires …

Confirmatory Factor Analysis of the White Bear Suppression Inventory and the Thought Control Questionnaire

2006

The White Bear Suppression Inventory (WBSI) was developed to assess chronic thought suppression, whereas the Thought Control Questionnaire (TCQ) measures different strategies to suppress unpleasant intrusive thoughts. The present study examines the latent factor structure of these instruments in a sample of 540 normal subjects using confirmatory factor analyses (CFA). Regarding the WBSI, the CFAs indicated that the tested models did not provide a good fit for the data. Data analysis showed that the TCQ with five factors and 30 items did not reach a reasonable fit. Therefore, in order to present a five-factor structure with an adequate fit, those items with problematic factor loadings were …

Further evidence that the effects of repetition on subjective time depend on repetition probability

2017

Repeated stimuli typically have shorter apparent duration than novel stimuli. Most explanations for this effect have attributed it to the repeated stimuli being more expected or predictable than the novel items, but an emerging body of work suggests that repetition and expectation exert distinct effects on time perception. The present experiment replicated a recent study in which the probability of repetition was varied between blocks of trials. As in the previous work, the repetition effect was smaller when repeats were common (and therefore more expected) than when they were rare. These results add to growing evidence that, contrary to traditional accounts, expectation increases apparent …