Merche Ovejero

Merche Ovejero
SERMES CRO · Biometrics/ Sermes AI

PhD Psychology

About

68
Publications
86,346
Reads
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250
Citations
Introduction
Merche Ovejero works as Senior statistician and as data scientist at Sermes CRO and as adjunt professor at Complutense University Madrid. Also she advises people who are passionate about substantive research in methodology and data analysis issues. Her research interests are related to clinical trials, metric quality of well-being measures, meta-analyses and Machine Learning.
Additional affiliations
September 2018 - present
Complutense University of Madrid
Position
  • Professor (Associate)
September 2016 - December 2018
Complutense University of Madrid
Position
  • Psychometric meta-analyses of Depression, Anxiety and Stress Scale
June 2015 - present
SERMES CRO
Position
  • Statistician
Education
July 2019 - July 2019
Complutense University of Madrid
Field of study
  • Big Data, Machine Learning
September 2014 - September 2016
Complutense University of Madrid
Field of study
  • Maste's degree on Methodology appled to social and health sciences
October 2010 - December 2014
Complutense University of Madrid
Field of study
  • Positive Psychology, Character Strengths, Well Being, Resilience, Engagement

Publications

Publications (68)
Article
Full-text available
Reliable test scores are essential to interpret the results obtained in statistical analyses correctly. In this study, we used the Values in Action Inventory of Strengths (VIA-IS) as an example of a widely applied assessment instrument in order to analyze its metric quality in what is known as Reliability Generalization. In addition, we conduct...
Article
Insight has long been linked to both prognosis and functioning in patients with schizophrenia; likewise, it is key to treatment adherence. This study seeks to assess the association between insight, adherence to pharmacological treatment, and disability in schizophrenia, and to study the potential mediating role of adherence between insight and dis...
Article
Full-text available
A relatively unexplored aspect in bipolar disorder (BD) is the ability to accurately judge other´s other´s nonverbal behavior. To explore this aspect of social cognition in this population is particularly meaningful, as it may have an influence in their social and interpersonal functioning. The aim of this research was to study interpersonal accura...
Article
Full-text available
Social cognition might be impaired in first degree relatives (FDR) of BD but existing research shows controversial results about social cognitive impairments in this population. The aim of this study was to assess Theory of Mind (ToM) and nonverbal sensitivity in FDR of BD and compare the results with those of two groups of persons with remitted bi...
Article
Full-text available
Abstract: The prevalence of certain diagnoses, such as eating disorders, depression, anxiety, and borderline personality disorder, is higher among women than among men. When it comes to women's mental health, focus-ing on social aspects influencing the way women fall ill becomes crucial. Using a sample of 368 women, we studied the classification ab...
Article
Full-text available
This study was conducted to investigate intelligence and visual-perceptual and motor functions in relation to hand dominance and the moderating role of gender and in young adults. The participants included 120 left-handed and right-handed individuals. A demographic questionnaire, the Wechsler Adult Intelligence Scale-Revised (WAIS-R) and the Bender...
Poster
Full-text available
Uno de los análisis de datos más empleados en Psicología es la regresión logística. Este análisis requiere que no haya colinealidad entre las variables predictoras. Los algoritmos Random Forest permiten trabajar de manera flexible en casos de colinealidad. El presente trabajo supone la aplicación práctica de un modelo de regresión logística y el es...
Poster
Full-text available
OBJECTIVES: Addiction to fast food is a type of behavioral addiction that could be linked to public health problems, such as obesity. Therefore, it is essential to design a tool that serves as a detection of the possible traits that are part of the addictive behavior. The aim of the present study is to generate a Patient Report Outcome (PRO) for th...
Poster
Full-text available
OBJECTIVES: The addiction to social networks involves a psychological state of dependency in which there is an excessive concern for the activity of social networks and an uncontrollable motivation to use them. This behavior interferes with normal functioning, developing symptoms typical of an addiction. Diagnostic systems do not recognize as such...
Article
Full-text available
Objectives: The addiction to social networks involves a psychological state of dependency in which there is an excessive concern for the activity of social networks and an uncontrollable motivation to use them. This behavior interferes with normal functioning, developing symptoms typical of an addiction. Diagnostic systems do not recognize as such...
Conference Paper
Full-text available
La calidad de la medida es un asunto que va más allá de las aplicaciones individuales de un test a un grupo representativo. En los meta-análisis de Generalización de la Fiabilidad (RG) se estudia cómo la estimación combinada de la fiabilidad se ve afectada por diversos moderadores. Esta heterogeneidad de la fiabilidad puede afectar a otros meta-aná...
Article
Full-text available
This research investigates personality dimensions and attributional styles among individuals with and without gender dysphoria with regard the roles of gender, educational level and ethnicity on these constructs. Participants were 60 males and females with and without gender dysphoria. A demographic sheet and two inventories were applied. Results s...
Article
Full-text available
Background aims. Cell therapy with autologous mesenchymal stromal cells (MSCs) in patients with spinal cord injury (SCI) is beginning, and the search for its better clinical application is an urgent need. Methods. We present a phase II clinical trial in patients with chronic SCI that received three intrathecal administrations of 100 x10^6 MSCs and...
Article
Full-text available
The aim of this study was to analyze social-perceptual Theory of Mind (ToM) in people affected with bipolar disorder (BD), comparing remitted BD I and BD II with controls, euthymic UD and also between them. 65 BD I and 47 BD II participants were compared to a group of 112 persons with no psychiatric diagnosis and 43 persons with UD in the Reading...
Poster
Full-text available
Background: To date, clinical trials have showed the absence of significant adverse events (AEs) of treatments which use mesenchymal stromal cells (MSCs) in patients with traumatic spinal cord injury (SCI) but no detailed information about positive events based on patients’ perspective has been provided. Aims: To study the security of the MSC treat...
Poster
Full-text available
Background: Cell therapy with mesenchymal stromal cells (MSCs) offers new treatment alternatives for patients suffering from spinal cord injury (SCI). Aims: To study the efficacy of the MSC treatment in two groups of patients with complete or incomplete SCI by means of the measurement of the functional independency (IANR-SCIFRS), spasms (PENN scal...
Article
Full-text available
La percepción de las consecuencias del acoso escolar va más allá de los implicados y puede variar en función del rol que se tiene en esta situación. Los objetivos del presente trabajo suponen el análisis de la percepción de las consecuencias del acoso escolar aplicando una metodología cuasi-cuantitativa. Para ello, se administró un cuestionario ela...
Article
Full-text available
Apenas existen iniciativas de investigación en el ámbito del envejecimiento activo y saludable de las personas con parálisis cerebral. Encontrar soluciones a este reto social requiere una red de excelencia en investigación que contribuya a vivir mejor a toda la sociedad. Se recopiló información sobre parálisis cerebral y envejecimiento concretament...
Conference Paper
Full-text available
The Satisfaction with Life Scale (SWLS) is one of the most used questionnaires to assess well-being. Although the scores of this scale show good precision indicators, the empirical evidence is contradictory regarding the potential presence of the measurement invariance of the scores associated with sex. In addition, some studies found that there ar...
Conference Paper
Full-text available
The accuracy of character strengths measures is an essential issue in Positive Psychology, being the VIA-IS one of the questionnaires widely applied in both research and applied fields. This work analyzes character strengths metric quality. A quality measurement requires high levels of scores' reliability obtained in different samples in which the...
Conference Paper
Full-text available
Background: Ryff´s multidimensional model postulates that there are 6 independent dimensions that constitute psychological well-being: self-acceptance, positive relationships, personal growth, environmental mastery, purpose in life and autonomy. From this model, a questionnaire was developed to evaluate psychological well-being and its components....
Article
Full-text available
In this article, the influence of sport practice on self-determination and life satisfaction is analysed in a sample of 74 people with intellectual disability, 42 practiced sport with regularity and 32 participants did not practice sport. The Satisfaction With Life Scale (SWLS) and the ARC Self- Determination Scale were used, applying a structured...
Article
Full-text available
There are hardly any research initiatives in the field of active and healthy ageing for people with cerebral palsy. To find solutions to this social challenge needs a network of excellence in research to provide a better life to all of society. Information from 34 articles on cerebral palsy and aging was analyzed, specifically on perceived needs, q...
Article
Full-text available
Chinese students who study abroad have to face with many added life stressors compared to those who remain in China. Furthermore, it has been demonstrated that the use of literature is an important didactic tool in the teaching of foreign language. This study analyzes the experience of a group of 66 Chinese university students (87.9% women, mean ag...
Article
Full-text available
The actions that facilitate positive affect encompass all forms of thinking, behaviors and activities that allow to maintain a high level of positive affect in their daily lives. This research aims to provide data on the psychometric functioning of the SANA scale. The sample consists of 383 Spanish people. Psychometric properties of the questionnai...
Article
Full-text available
Introduction: Eating disorders (ED) have been linked to attention deficit hyperactivity disorder (ADHD) because they present some symptoms in common. The aim of this study was to explore the influence on ED of symptoms suggestive of adult ADHD and how these symptoms affect the clinical presentation of adult patients. A further aim was to assess th...
Article
Full-text available
Background aims: Cell therapy with mesenchymal stromal cells (MSCs) offers new hope for patients suffering from spinal cord injury (SCI). Methods: Ten patients with established incomplete SCI received four subarachnoid administrations of 30 × 10(6) autologous bone marrow MSCs, supported in autologous plasma, at months 1, 4, 7 and 10 of the study...
Article
Full-text available
Este trabajo presenta una revisión sistemática sobre las fortalezas psicológicas propuestas por el modelo Values in Action (VIA) y su relación con el bienestar, la satisfacción vital, la felicidad, la resiliencia y la salud en diferentes poblaciones. Los resultados de la revisión de 47 estudios permiten concluir que las fortalezas psicológicas está...
Article
Full-text available
Este trabajo presenta una revisión sistemática sobre las fortalezas psicológicas propuestas por el modelo Values in Action (VIA) y su relación con el bienestar, la satisfacción vital, la felicidad, la resiliencia y la salud en diferentes poblaciones. Los resultados de la revisión de 47 estudios permiten concluir que las fortalezas psicológicas está...
Poster
Full-text available
Existen términos enraizados en diferentes culturas que apelan a diversas cualidades de la fortaleza humana. Estos términos han formado parte de la historia de cada cultura, pero en ocasiones, han pasado desapercibidos y no han sido estudiados. Este el caso del término finlandés sisu. En 2013, Emilia Lahti llevó a cabo un estudio sobre este término...
Article
Full-text available
Based on the analysis of different studies that highlight the important role of affect and intrafamily dialogue against the misbehavior of children in society, we plan to know the opinion of the educational community about this and which ones measures they propose to eradicate bullying. To obtain this information, we carried out a study in the comm...
Conference Paper
Full-text available
The Tuesday Program is a free short online course designed to enable people to flourish, live with a purpose , use resources better, and to become happier. This program is a seven week course which covers a new topic each week. The topics included are: character strengths, mindset growth, purpose in life, gratitude, communication skills, relaxation...
Conference Paper
Full-text available
The VIA classification is a comprehensive catalogue of 24 strengths organized under six broad-band virtues purported to be ubiquitous across time and culture (Peterson & Seligman, 2004). Since its publication, the VIA-IS has become increasingly popular such that is now among the most frequently used self-report inventories for the assessment of goo...
Conference Paper
Full-text available
Resilience has been defined as resistance to illness and adversity, adaptation and thriving. This variable is correlated to personal characteristics, social relations and wellbeing. The Brief Resilience Scale is a measure used to assess the ability to recover, resist, adapt and thrive. To translate into Spanish the Brief Resilience Scale and to ana...
Research
Full-text available
The Values in Action Classification is an important perspective of positive traits and character strengths. The VIA-IS is a measure based within the VIA project. Research from this model demonstrates that there are differences between men and women related to some character strengths; however it does not consider gender differences yet. We consider...
Thesis
Full-text available
Evaluación de fortalezas humanas en estudiantes de la Universidad Complutense de Madrid y diferencias de sexo: Relación con salud, resiliencia y rendimiento académico.
Conference Paper
The facility for sustainable positive affect consists of connected behaviors and cognitions that allow individuals to maintain a high level of positive mood. This trait has two components: Engaging in Self-Congruent Activities and Engaging in New Activities. This predisposition is related to fewer anxiety, less negative affect, more life satisfacti...
Conference Paper
Full-text available
The number of Chinese students who study overseas has increased in the last years. The analysis of variables concerning wellbeing has not received the attention it merits. In order to begin to address this gap, this study follows a pioneering experience with a group of 47 Chinese university students who have come to Madrid to study Spanish. The goa...
Conference Paper
Full-text available
Las acciones que facilitan el afecto positivo se definen como aquellas formas de pensar, comportamientos y actividades que permiten a las personas mantener un elevado nivel de afecto positivo en su vida diaria (Shuttle y Malouff, 2013). Según estos autores, esta predisposición consta de dos componentes: la implicación en actividades congruentes con...
Conference Paper
Full-text available
El Sisu es un constructo profundamente enraizado en la cultura finlandesa y se define como una extraordinaria determinación y fortaleza ante la adversidad. La relación que se propone de Sisu con la satisfacción vital, el bienestar psicológico, la resiliencia, la determinación y las fortalezas humanas (Lahti, 2013) son suficientes motivos para inclu...
Conference Paper
Full-text available
La Psicología Positiva desde sus inicios se ha caracterizado por el estudio científico de las emociones positivas, las fortalezas y las organizaciones positivas. En este sentido, se ha hecho mucho hincapié en el análisis empírico de la eficacia de las intervenciones que se realizan desde esta área. El programa Bienestar 10 se compone de 10 sesiones...
Article
Full-text available
This study investigates the role of infertility, age, educational level and duration of marriage on mental health, psychological distress and sexual dysfunction in a sample of Iranian women. Participants included 50 infertile and 50 fertile women who were selected from Shiraz City; Fars province, Iran. A demographic questionnaire, General Health Qu...
Book
Full-text available
What is positive psychology? When, where and how did positive psychology develop? What is it like to use positive psychology applications in the real world of professional practice? How much do helping professionals utilise positive psychology frameworks? Why do some practitioners opt for particular positive psychology applications and frameworks o...
Article
Full-text available
The VIA classification is a comprehensive catalogue of 24 strengths organised under six broad-band virtues purported to be ubiquitous across time and culture The VIA-IS is a measure which has been extensively used to assess character strengths. The aim of this research is to do a systematic review of the VIA-IS and to analyse its psychometrical pro...
Conference Paper
Full-text available
The VIA classification is a comprehensive catalogue of 24 strengths organised under six broad-band virtues purported to be ubiquitous across time and culture The VIA-IS is a measure which has been extensively used to assess character strengths. The aim of this research is to do a systematic review of the VIA-IS and to analyse its psychometri-cal pr...
Book
Full-text available
¿Qué es la psicología positiva? ¿Cuándo, dónde y cómo se desarrolló la psicología positiva? ¿Qué se siente al utilizar las aplicaciones de la psicología positiva en la práctica profesional y en el mundo real? ¿Con qué frecuencia utilizan los profesionales el marco de la psicología positiva? ¿Por qué algunos profesionales optan por aplicaciones más...
Conference Paper
Full-text available
El Programa de los Martes es un programa on line gratuito diseñado para potenciar los recursos de las personas y optimizar el afrontamiento de los desafíos del día a día. Ha sido traducido del original The Tuesday Program (Jarden, 2010). Los temas que componen este programa son: • Descubriendo y utilizando las fortalezas humanas • Desarrollando una...

Questions

Questions (4)
Question
I'm performing hierarchical lineal modeling using one mediating variable and I want to know how to perform Sobel's Test with SPSS 21.
Question
I am computing a Two-way ANOVA with two independent variables with two groups each (2x2 design) and a quantitative variable. I've checked all the assumptions, but, when I look at the "Test of between subjects effects" table, the Corrected model is not significant, what happens with in this situation? I think that the data and variables do not fit the ANOVA (or GLM) model. So, I have to choose a non parametric strategy, am I wrong? Thank you very much for your help.

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Projects

Projects (2)
Project
We're performing some psychometric meta-analysis of the Depression Anxiety and Stress Scales (DASS). Our goal is to establish Reliability Generalization of the scores obtained with the DASS scales, to study Validity Generalization, and, if possible to analyse its factor structure by applying meta-confirmatory factor analyses.