Search results for "Statistics"
showing 10 items of 7671 documents
Financial contagion through space-time point processes
2020
AbstractWe propose to study the dynamics of financial contagion by means of a class of point process models employed in the modeling of seismic contagion. The proposal extends network models, recently introduced to model financial contagion, in a space-time point process perspective. The extension helps to improve the assessment of credit risk of an institution, taking into account contagion spillover effects.
Non-parametric approaches to the impact of Holstein heifer growth from birth to insemination on their dairy performance at lactation one
2012
SUMMARYParametric approaches have been used widely to model animal growth and study the impact of growth profile on performance. Individual variation is often not considered in such approaches. However, non-parametric modelling allows this. Such an approach, based on spline functions, was used to study the importance of growth profiles from age 0 to 15 months (i.e. insemination) on milk yield and composition in primiparous cows. A dataset of 447 heifers was used for analysis of growth performance; 296 of them were also used to study impact on lactation. All of them originated from a French experimental herd and were born between 1986 and 2006. Clustering methods were also tested. Comparison…
Who Said That? Investigating the Plausibility-Induced Source Focusing Assumption with Norwegian Undergraduate Readers
2016
Abstract The present study investigated to what extent encountering a textual claim that contradicts one’s prior beliefs may increase readers’ memory for the source of the information, such as the author or publication. A sample of 71 Norwegian economics and administration undergraduates were presented with texts on cell phones and potential health risks that either concluded that cell phones involve serious health risks or that they are perfectly safe. Results showed that readers’ memory for source feature information increased when the conclusion of the text contradicted the belief that cell phone use poses serious health risks but not when it contradicted the belief that cell phone use d…
STREET WORKOUT: PERFIL PSICOSOCIAL DE SUS PRACTICANTES
2020
La presente investigación estudia las principales características psicológicas de los practicantes de Street Workout, una modalidad deportiva emergente y en auge en los últimos años. A través de un estudio descriptivo-correlacional, con una muestra de 107 practicantes de España, se elaboró un estudio piloto del perfil psicosocial que incluye la evaluación de los motivos de práctica, la satisfacción muscular, la cohesión y el bienestar psicológico; además de una comparación en función de si compiten. Los resultados señalan que es un deporte practicado mayoritariamente por hombres menores de 23 años, cuya principal motivación es hallar un equilibrio entre la preocupación por la salud y su asp…
Time structure in men’s professional doubles tennis: does team experience allow finishing the points faster?
2021
This article provides information on the time structure of the doubles game in tennis and studies the influence of team experience on this time structure. The sample consisted of 2339 points corres...
Influence of computer feedback on attentional biases to emotional faces in children
2016
We examined which type of corrective feedback in a computerized task produces an optimal balance between performance and emotional reactions in children. To that end, we conducted an emotional dot-probe task. We employed three types of corrective feedback (negative, positive, or mixed) along with a control, non-feedback condition. We tested the effect of feedback on: (i) task performance; (ii) immediate emotional reactions in terms of attentional preferences toward emotional faces (happy, sad, and angry); and (iii) self-reported affective experience after the task. Results showed that children committed more errors in the non-feedback group than in the mixed and negative feedback groups. Fu…
Association between playing tactics and creating scoring opportunities in counterattacks from United States Major League Soccer games
2016
The aim of this study was to examine the effects of playing tactics on creating scoring opportunities in counterattacks from the United States Major League Soccer (MLS) 2014 season. The sample included 452 counterattack possessions, corresponding to 30 randomly selected matches. Multidimensional data from 14 categorical variables were analysed by means of a descriptive analysis and binary logistic regression. Counterattacks that started in the pre-offensive zone and had initial penetration were more effective in creating scoring opportunities than those that started in the defensive zone (OR=3.825; 95% IC: 1.765 to 8.289; p<0.01), and those without initial penetration (OR=8.689; 95% IC: 1.1…
The creation of goal scoring opportunities in professional soccer. Tactical differences between Spanish La Liga, English Premier League, German Bunde…
2019
The aim of the present study was to compare how goal scoring opportunities emerge in the top four European soccer leagues. The sample included 914 team possessions that led to the creation of goal ...
Interpersonal Distance Regulation and Approach-Avoidance Reactions Are Altered in Psychopathy
2019
In this study, we examined the impact of psychopathy on approach-avoidance reactions and interpersonal distance (IPD) in response to social cues. We selected a student sample and measured psychopathy via self-report. Participants were immersed in a virtual environment in which a virtual person displayed either angry or happy facial expressions. In the first experiment, participants had to walk toward the virtual person until a comfortable IPD had been reached. In the second experiment, participants had to push or pull a joystick in response to the facial expression of the virtual person. Our results suggest that psychopathy does not change average IPD but does impair its regulation. That i…
Factorial Validity of the General Health Questionnaire 12 in an Angolan Sample
2017
Abstract. Most evidence available has found multidimensional solutions for the General Health Questionnaire’s (GHQ12) structure, contrary to the authors’ original one-factor solution. Recently, the study of method effects associated to negatively worded items has been included in the study of GHQ12’s factor structure, and the most common conclusion has been that the best-fitting structure is a single factor confounded by response bias. Current study analyzes the factor structure of the Portuguese version of the GHQ12. The sample consisted of 1,332 young Angolan adults. Previously-reported structures, including one-factor and multidimensional substantive ones, as well as bifactor structures…