Guillermo Vallejo

ORCID: 0000-0002-8010-6854
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About
Contact & Profiles
Research Areas
  • Advanced Statistical Methods and Models
  • Statistical Methods and Applications
  • Optimal Experimental Design Methods
  • Statistical Methods and Bayesian Inference
  • Business, Education, Mathematics Research
  • Genetics and Plant Breeding
  • Parental Involvement in Education
  • Neuroscience and Neuropharmacology Research
  • Statistical Methods in Clinical Trials
  • Business, Innovation, and Economy
  • Memory and Neural Mechanisms
  • Advanced Causal Inference Techniques
  • Advanced Statistical Process Monitoring
  • Statistical Methods and Inference
  • Stress Responses and Cortisol
  • Child and Adolescent Psychosocial and Emotional Development
  • Educational Outcomes and Influences
  • Innovative Teaching and Learning Methods
  • Neuroinflammation and Neurodegeneration Mechanisms
  • Diverse Education Studies and Reforms
  • Schizophrenia research and treatment
  • Family and Disability Support Research
  • Neuroendocrine regulation and behavior
  • Psychology Research and Bibliometrics
  • Advanced Statistical Modeling Techniques

Universidad de Oviedo
2015-2025

University of Minho
2013

University of Valparaíso
2012

Universidad de Santiago de Chile
2010

Hospital de Galdakao
2005

Background: delirium is a clinical syndrome associated with multiple short and long-term complications therefore prevention an essential part of its management. This study was designed to assess the efficacy multicomponent intervention in prevention. Methods: total 287 hospitalised patients at intermediate or high risk developing were randomised receive non-pharmacological delivered by family members (144 patients) standard management (143 patients). The primary outcome occurrence any time...

10.1093/ageing/afs060 article EN Age and Ageing 2012-05-15

In the transactional model of stress, coping responses are key to preventing stress response. this study, possible role psychological well-being as a personal determinant strategies in academic context was analyzed. Specifically, study has two objectives: (a) identify different profiles students according their level well-being; and (b) analyze differences between these use three (positive reappraisal, support-seeking, planning). Age, gender, degree were estimated covariables. A total 1,072...

10.3389/fpsyg.2016.01554 article EN cc-by Frontiers in Psychology 2016-10-13

The authors intended to (a) identify the association between gender or grade level and teachers’ homework (HW) feedback (b) examine relationship HW feedback, HW-related behaviors (e.g., amount of completed), academic achievement. Four hundred fifty-four students (Grades 5–12) participated in this study. results showed that at higher levels, there is a lower perceived feedback; as by positively significantly related completed quality time management but not spent on HW; (c) predict...

10.1080/00220671.2013.878298 article EN The Journal of Educational Research 2014-10-08

The importance of personal psychological resources in preventing academic stress has enjoyed little attention to date, despite the high rates that exist among university students. This article analyzes effect eudaimonic well-being on use adaptive strategies for coping with stress. Moreover, it role self-efficacy as a mediator and moderator this relationship. In mediation model, gender is included co-variable; moderation moderator. A total 1402 students participated study. data were gathered...

10.3390/ijerph16010048 article EN International Journal of Environmental Research and Public Health 2018-12-25

This study investigated how students' prior achievement is related to their homework behaviors (i.e., time spent on homework, management, and amount of homework), perceptions parental involvement in control support). A total 1250 secondary students from 7 10th grade participated the study. Structural equation models were fitted data, compared, a partial mediation model was chosen. The results indicated that academic performance significantly associated with both variables, direct indirect...

10.3389/fpsyg.2017.01217 article EN cc-by Frontiers in Psychology 2017-07-27

Monte Carlo simulation studies allow testing multiple experimental conditions, whose results are often difficult to communicate and visualize their full extent. Some researchers have proposed alternatives address this issue, highlighting its relevance. This article develops a new way of observing, analyzing, presenting the experiments is explained step by with an example. A criterion decide which could be averaged should not averaged. It also indicated how construct Traceability Tables....

10.3389/fpsyg.2025.1549767 article EN cc-by Frontiers in Psychology 2025-03-18

Abstract Introduction The aim of this study was to examine longitudinal changes in past‐month cannabis use and hazardous over 1 year emerging adults the prospective associations between depression, anxiety, stress use, using age, sex impulsivity as potential moderators. Methods Participants were 2762 college students (aged 18–25) who surveyed three times course a (T1: September–November 2021; T2: March–May 2022; T3: 2022). Structural equation modelling semi‐parametric mixed‐effects repeated...

10.1111/dar.14047 article EN Drug and Alcohol Review 2025-03-24

This study analyzed the effects of five types homework follow-up practices (i.e., checking completion; answering questions about homework; orally; on board; and collecting grading homework) used in class by 26 teachers English as a Foreign Language (EFL) using randomized-group design. Once week, for six weeks, EFL particular type practice they had previously been assigned to. At end weeks students completed an exam outcome measure. The results showed that three positive impact students'...

10.3389/fpsyg.2015.01528 article EN cc-by Frontiers in Psychology 2015-10-13

Students' writing constitutes a topic of major concern due to its importance in school and daily life. To mitigate students' problems, school-based interventions have been implemented the past, but there is still need examine effectiveness different types that use robust design methodologies. Hence, present study followed longitudinal cluster-randomized controlled using multilevel modeling analysis with 370 fourth-grade students (nested 20 classes). The classes were randomly assigned four...

10.1371/journal.pone.0218099 article EN cc-by PLoS ONE 2019-07-18

Background: Many studies have explored personal values in nursing, but none has assessed whether the predictions made by theory of intergenerational value change are true for different generations nursing professionals and students. This predicts a shift those held younger towards ones focussed on self-expression. Research question: The purpose study was to identify differences among students determine generational profiles fit theory. design: An exploratory comparative design with...

10.1177/0969733014557135 article EN Nursing Ethics 2014-12-08

Quasi-experimental investigation is that one has as aim test a causal hypothesis manipulating (at least) an independent variable where for logistic or ethical reasons it not possible to assign the units of at random groups. Due fact many decisions social level take on basis result investigations with these characteristics, imperative have exquisite planning application treatment, control in process and analysis data. This year 2013 quasi-experimental designs expires 50 years, this work...

10.6018/analesps.30.2.166911 article EN Anales de Psicología 2014-04-11

Early life stress is associated with long-term and pervasive adverse effects on neuroendocrine development, affecting normal cognitive emotional development. Experimental manipulations like environmental enrichment (EE) may potentially reverse the of early induced by maternal separation (MS) paradigm in rodents. However, functional brain networks involved EE after prolonged exposure to MS have not yet been investigated. In order evaluate possible changes connectivity MS, quantitative...

10.1371/journal.pone.0226377 article EN cc-by PLoS ONE 2019-12-12

Abstract The standard univariate and multivariate methods are conventionally used to analyze continuous data from groups by trials repeated measures designs, in spite of being extremely sensitive departures the multisample sphericity assumption when group sizes unequal. However, last 10 years several authors have offered alternative solutions these tests that do not rest on this assumption. In an attempt improve precision Brown–Forsythe (BF) procedure, a new approximate degrees freedom (df)...

10.1207/s15327906mbr4104_6 article EN Multivariate Behavioral Research 2006-12-01
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