Manuel Gámez-Guadix

Manuel Gámez-Guadix
Universidad Autónoma de Madrid | UAM · Biological and Health Psychology

PhD

About

121
Publications
118,533
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4,395
Citations
Citations since 2016
69 Research Items
3911 Citations
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20162017201820192020202120220200400600800
20162017201820192020202120220200400600800

Publications

Publications (121)
Chapter
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Online grooming is the process by which an adult, through the use of information and communication technologies, gains access to a minor and obtains their trust to engage in some type of sexual interaction with them. This process involves the use of a series of persuasion strategies that allow the adult to progressively gain the child’s trust. This...
Article
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Cyberhate represents a risk to adolescents’ development and peaceful coexistence in democratic societies. Yet, not much is known about the relationship between adolescents’ ability to cope with cyberhate and their cyberhate involvement. To fill current gaps in the literature and inform the development of media education programs, the present study...
Book
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El chemsex o sesión en España, se ha convertido en un problema de salud pública debido a sus riesgos asociados. Esta práctica se ha relacionado en los últimos años con el uso intencional de sustancias psicoactivas para facilitar, mantener y/o mejorar la experiencia sexual (1–3). Aunque el uso de drogas y su asociación con contextos sexuales es cono...
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Although hate speech is widely recognized as an online phenomenon, very few studies have investigated hate speech among adolescents in offline settings (e.g., schools). At the same time, not much is known about countering hate speech (counterspeech) among adolescents and which factors are associated with it. To this end, the present study used the...
Article
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The purpose of this one-year longitudinal study was to investigate the moderating effect of perceived social support from Gay-Straight Alliances in the relationships among homophobic cyberbullying victimization and bystanding and depressive and anxiety symptoms among 466 LGBTQIA adolescents (Mage = 15.76; 52% female). Perceived social support from...
Article
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Introduction. The aim of this study was to develop a new measure of victimization and perpetration of two frequent forms of image-based sexual abuse, namely, sextortion (i.e., threat of distributing sexual images to pressure the victim into doing something) and nonconsensual sexting (i.e., distributing sexual images of someone without consent of th...
Article
Full-text available
Cyberhate represents a risk to adolescents’ development and peaceful coexistence in democratic societies. And yet, not much is known about the relationship between adolescents’ ability to cope with cyberhate and their cyberhate involvement. To fill current gaps in the literature and inform the development of media education programs, the present st...
Article
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Sexualized drug use (SDU) has been poorly studied among heterosexuals. The purpose of the present study was to analyze the prevalence of and gender differences in types of substances, risky sexual practices, sexually transmitted infections (STIs), motivations, and psychological adjustment among heterosexual women and men who engage in SDU. The stud...
Article
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Background. Using the internet to search for information or share images about self-harm is an emerging risk among young people. The aims of this study were twofold: (a) to analyze both the prevalence of different types of self-harm on the internet and the differences by sex and age, and (b) to examine the relationship of self-harm on the internet...
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Online hate speech has become a widespread problem in the daily life of adolescents. Despite growing societal and academic interest in this online risk, not much is known about the relationship between online hate speech victimization and adolescents’ mental well-being. In addition, potential factors influencing the magnitude of this relationship r...
Article
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Hate speech has become a widespread phenomenon, however, it remains largely unclear why adolescents engage in hate speech and which factors are associated with their motivations for perpetrating hate speech. To this end, we developed the multidimensional “Motivations for Hate Speech Perpetration Scale” (MHATE) and evaluated the psychometric propert...
Article
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Background: Sexualized drug use (SDU), also known as chemsex, refers to the use of psychoactive substances for sexual purposes among men who have sex with men (MSM), which has been associated with mental health symptoms. The objective of this review is to systematically review the available evidence on mental health outcomes in MSM who use sexuali...
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El abuso sexual online de menores es el proceso a través del cual un adulto consigue victimizar sexualmente a un menor valiéndose de Internet. Este estudio tiene como objetivos analizar los mitos y las creencias erróneas que muestran los menores sobre el abuso sexual online, y desarrollar y evaluar la eficacia de un programa de prevención específic...
Article
Background Online child grooming includes the online behaviors of an adult aimed at achieving some type of sexual interaction with a minor. However, to date, quantitative research that has investigated the strategies online groomers employ to gain their victim's trust is scarce. Objective To this end, the main aim of this study was to distinguish...
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Recent evidence shows that young people across Europe are encountering hateful content on the Internet. However, there is a lack of empirically tested theories and investigation of correlates that could help to understand young people’s involvement in cyberhate. To fill this gap, the present study aims to test the Routine Activity Theory to explain...
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Sexting among adolescents has triggered controversial debates among scholars and the general public. However, questions regarding the associations between different types of sexting, namely consensual, non-consensual, and pressured sexting, depressive symptoms, and non-suicidal self-harm remain. In addition, little attention has been given to wheth...
Article
The first aim of this study was to analyze the prevalence and frequency of different forms of online sexual victimization and risks among sexual minorities, including sexting, sexual orientation- and gender-based victimization, unwanted sexual attention, sextortion, and revenge porn. The second aim was to examine whether online sexual victimization...
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Adolescents around the world are increasingly exposed to cyberhate. More knowledge is needed to understand how adolescents cope with cyberhate and how they can be supported when exposed. To this end, the present study investigated the associations between parental mediation of Internet use and adolescents’ problem-focused coping strategies for hypo...
Article
The present cross-sectional research examined the moderating role of resilience in the relationship between cyberbullying victimization and mental health outcomes, measured based on depression symptoms and life satisfaction. The sample consisted of 2,108 adolescents aged 12-17 who completed measures of cyberbullying victimization, resilience, depre...
Article
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Background: Cyberhate is a growing form of online aggression against a person or a group based on race, ethnicity, nationality, sexual orientation, gender, religion, or disability. The present study aims to examine psychometric properties of the Coping with Cyberhate Questionnaire, the prevalence of coping strategies in Spanish adolescents, differ...
Article
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This study aimed to address how multiple risk factors that were previously related and derived from ecological levels, when taken together, could explain child-to-mother and child-to-father violence. A total of 298 Spanish adolescents (140 girls) who had committed CPV, with a mean age of 15.91 (SDage = 1.89), offender residents of specialized close...
Article
Little attention has been given academically to empirically tested theoretical frameworks that aim to measure the risk of adolescents falling victim to cybergrooming. To this end, we have applied the Routine Activity Theory to investigate whether exposure to motivated offenders (PC/laptop ownership and Internet access in one’s own bedroom), capable...
Article
Little attention has been given academically to empirically tested theoretical frameworks that aim at measuring the risk of adolescents falling victim to cybergrooming. To this end, we have applied the routine activity theory (RAT) to investigate whether exposure to motivated offenders (PC/laptop ownership and Internet access in one's own bedroom),...
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Digital self-harm among spanish adolescents: analysis of prevalence and motivations. Digital self-harm consists of the use of information and com�munication technologies, as Internet and mobile phone, to post, send or share content that is harmful or humiliating to oneself. The first objective of this study was to examine the prevalence of differe...
Article
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Online hate is a topic that has received considerable interest lately as online hate represents a risk to self-determination and peaceful coexistence in societies around the globe. However, not much is known about the explanations for adolescents posting or forwarding hateful online material or how adolescents cope with this newly emerging online r...
Article
Full-text available
Online hate is a topic that has received considerable interest lately, as online hate represents a risk to self-determination and peaceful coexistence in societies around the globe. However, not much is known about the explanations for adolescents posting or forwarding hateful online material or how adolescents cope with this newly emerging online...
Article
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Cyberhate exposure can have serious negative impacts on adolescents' development. However, there has been scarce research on adolescents' coping strategies for cyberhate. Deepening the knowledge of how adolescents deal with cyberhate might help researchers, teachers, and parents find a way to alleviate negative effects of cyberhate on adolescents....
Article
This study examined the longitudinal and reciprocal relationships between sexting and two types of online victimization among minors: sexual solicitations by adults and cyberbullying. The sample consisted of 1497 minors between the ages of 12 and 14 at time 1, who completed measures on sexting, sexual solicitations, and cyberbullying at the beginni...
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Objectives: The nine-item Problematic Internet Use Questionnaire (PIUQ-9) is a brief self-report screening instrument for problematic internet use. The main objective of the present study was to explore the psychometric properties of the PIUQ-9 among nine different language-based samples of European internet users (Italian, German, French, Polish,...
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La presente investigación tuvo como propósito evaluar las propiedades psicométricas del Cuestionario de Ciberbullying (CBQ) en una muestra de adolescentes argentinos. Se evaluó una muestra de 898 adolescentes (43 % varones, edad media 15.2). Los participantes respondieron a dicho cuestionario, a la escala victimización y agresión del cuestionario d...
Article
Few studies have examined the protective factors that contribute to reducing long-term involvement in cyberbullying (CB). This study examined whether dispositional mindfulness is associated with the reduced stability over time (i.e., long-term involvement) of CB victimization and perpetration and with the lower reciprocity of both. This was a three...
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Partner abuse is an important social problem due to its high prevalence and the consequences it entails for the victims. In recent years, information and communication technologies, such as the Internet and Smartphones, have become frequent tools for exercising controlling behavior and aggression in young couples. The purpose of this paper is to co...
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Purpose: To analyze the longitudinal relationships of demographic characteristics (i.e., sex, age, and sexual orientation), personality traits according to the Big Five model, and several indicators of psychological adjustment (i.e., depression symptoms, self-esteem, and problematic Internet use) with sexting behavior among adolescents over 1 year...
Article
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The purpose of this study was to analyze the temporal and reciprocal relationships between depression and online child sexual victimization, including both online sexual solicitations and interactions of minors with adults. Gender differences in these relationships were also examined. A total of 1,504 adolescents (52.4 percent girls; mean age = 13....
Article
This study examined whether exposure to family violence, both in the form of direct victimization and witnessing violence, predicted dating violence victimization in adolescents through maladaptive schemas. A sample of 933 adolescents (445 boys and 488 girls), aged between 13 and 18 (M = 15.10), participated in a three-year longitudinal study. They...
Article
The limited literature on online child grooming has focused mainly on studying the characteristics of perpetrators and victims that facilitate the sexual abuse of minors. Little attention has been given to the perceptions of the perpetrators about the abuse process and the strategies used to sustain it over time. In the present study, after identif...
Article
The main objective of this study was to validate the child-to-parent aggression questionnaire (CPAQ) in a clinical sample of adolescents who aggress against their parents. The second aim was to analyze the child-to-parent violence (CPV) prevalence and gender and age differences among these adolescents. The third aim was to analyze the frequency of...
Article
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Bullying victimization in adolescence is a significant social problem that can become persistent over time for some victims. However, there is an overall paucity of research examining the factors that contribute to continued bullying victimization. Schema therapy proposes a model that can help us understand why bullying victimization can be persist...
Article
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The purpose of the present study was to investigate the psychometric properties of the Spanish version of the Gender Role Conflict Scale – Short Form (GRCS-SF; Wester et al. 2012) in a sample of men. In addition, we extend the gender conflict paradigm by evaluating two samples of women with the same instrument. In Study 1, we investigated the inter...
Article
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Child-to-parent aggression (CPA) is a social problem that is receiving much attention because of the increasing frequency and the consequences for its victims. The primary aim of this study was to assess the longitudinal relationship between receiving corporal punishment (CP) and perpetrating physical and psychological CPA in adolescents. The secon...
Article
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The main objective of this study was to validate the child-to-parent aggression questionnaire (CPAQ) in a clinical sample of adolescents who aggress against their parents. The second aim was to analyze the child-to-parent violence (CPV) prevalence and gender and age differences among these adolescents. The third aim was to analyze the frequency of...
Article
Full-text available
Online grooming is the process by which an adult sexually victimizes a minor using the means offered by the Internet. The objective of this study was to analyze the prevalence of persuasion and influence strategies used by aggressors to manipulate and involve minors in online grooming, as well as gender differences. The initial sample consisted of...
Article
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Online sexual grooming and exploitation of adolescents is receiving increasing social attention. Drawing on a social influence framework, the aim of this study was to test a model of the direct and mediated relationships between an adult's use of persuasion strategies and online sexual grooming of early adolescents. The initial sample of the study...
Article
Download: http://www.tandfonline.com/eprint/3umjePeREaqCq3D7RfnF/full The research on online child sexual victimization has mainly focused on the sexual solicitation of minors (i.e., sexual requests by an adult), with scarce information available on sexual interactions (e.g., cybersex or meeting in person) in which a minor is exploited by an adult....
Article
Few studies have examined differences in emotional problems and personality of traditional bullies and cyberbullies. The present study aimed to determine whether those engaged in cyberbullying differ in emotional problems, and personality from those engage in traditional bullying perpetration. An Argentinean sample of 898 high school students was r...
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The objective of this study was to develop a questionnaire to assess the online sexual solicitation and interactions of minors with adults in order to document the extent of this problem. The questionnaire was constructed in four phases: (a) a review of the previous literature; (b) interviews with convicted online child-sex offenders; (c) a review...
Book
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Índice Introducción. Ser padres tecnológicos. Educar en positivo. Adicción a Internet, smartphones y videojuegos. El ciberbullying y el ciberacoso. El sexting. Acoso en el noviazgo a través de Internet y los smartphones. El grooming o acoso sexual online de menores. Resumen. En esta obra se revisan las principales cuestiones sobre el uso de Intern...
Article
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El grooming online (proceso en el cual un adulto se gana la confianza de un menor con el objetivo de obtener algún tipo de contacto sexual) es un problema social serio. Actualmente se sabe poco sobre las estrategias específicas que los adultos usan para manipular y persuadir a los menores con el fin de lograr interacciones sexuales con ellos. En es...
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Introduction: The aim of this study was to study the cross-sectional and longitudinal associations between mindfulness facets and problematic Internet use in adolescents. Methods: The sample consisted of 609 adolescents (313 girls, 296 boys; Mean age=14.21years, SD=1.71; age range 11-18). Participants completed a measure of five facets of mindfu...
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Full download: http://www.tandfonline.com/eprint/IQ9hC766sPiUCKhYKR3C/full The main objective of this study was to analyze the direct and indirect relationships among sexting, cybervictimization, depression, and suicidal ideation. The sample consisted of 303 university students from Mexico (mean age = 19.73, SD = 1.73) who completed a questionnaire...
Article
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Background: Voluntarily sending sexual content (e.g., photos, videos) among adolescents via the Internet and mobile phones, a phenomenon called sexting , is receiving increasing social and research attention. The aims of this study were: 1) to analyze the prevalence and trends of sexting among adolescents by gender and age and 2) to examine the pe...
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Background: Voluntarily sending sexual content (e.g., photos, videos) among adolescents via the Internet and mobile phones, a phenomenon called sexting, is receiving increasing social and research attention. The aims of this study were: 1) to analyze the prevalence and trends of sexting among adolescents by gender and age and 2) to examine the pers...
Article
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Problematic Internet use, often called Internet addiction, is a growing problem that has received increasing attention from clinicians and researchers. The aim of this study was to analyze the relationship of mindful awareness and the manifestations of problematic Internet use from a cognitive behavioral perspective (i.e., preference for online soc...
Article
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Although the study of cyber dating abuse has increased in recent years, there is still limited knowledge about the variables associated with victimization in these behaviors. This study has two objectives: (1) to analyze the relationship of the main forms of online victimization of cyber dating abuse (control and direct aggression, and the interact...
Article
The current study examined the moderating roles of neuroticism and extraversion in victims of bullying. According to a stress-diathesis model, we hypothesized that adolescents with high levels of neuroticism and low levels of extraversion would react to victimization with increased symptoms of depression and social anxiety. A sample of 1440 adolesc...
Article
The aim of this study was to analyze the relationships between psychopathic traits and aggressive behavior in adolescents. We assessed four subtypes of aggression (proactive-overt, reactive-overt, proactive-relational and reactive-relational). Gender was included as a moderator of those relationships. The sample comprised 765 adolescents (464 girls...
Article
The main aim of the study was to investigate the role of individual and class justification of cyberbullying in predicting adolescents' cyberbullying perpetration over 6 months. The effects and moderating role of impulsivity, age, and gender in the hypothesized relationship between justification and cyberbullying were also tested. A sample of 750 S...
Article
Individualised measures of quality of life (QoL) refer to instruments that encourage the respondent to actively elicit which areas of their life are most relevant for his/her QoL. The aim of this study is to compare individualised versus standard measures of QoL in a sample of patients with eating disorder (ED). The Schedule for the Evaluation of t...
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Background and aims: This study aims to analyze the cross-sectional and longitudinal relationship between three major risky online behaviors during adolescence: problematic Internet use, cyberbullying perpetration, and meeting strangers online. An additional objective was to study the role of impulsivity-irresponsibility as a possible explanatory v...
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Aunque el estudio del abuso online en el noviazgo ha aumentado en los últimos años, aún es escaso el conocimiento sobre las variables asociadas a la victimización de estas conductas. El presente estudio tiene dos objetivos: (1) analizar la relación de las principales formas de victimización de abuso online en el noviazgo (control y agresión directa...
Article
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The aim of this study was to identify the role of exposure to family violence and parental discipline in the development of child-to-parent violence (CPV). A qualitative in-depth interview design was used. Fifteen adolescents (10 boys) who have perpetrated CPV (Mage = 16 years; SDage = 1.33 years) and their parents or foster parents took part in th...
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Cyberbullying, the harassment of others via new technologies, is a growing phenomenon with important consequences for its victims. Despite the growing interest in this new form of violence, only a few longitudinal studies have analyzed the relationship between cyberbullying victimization and psychological problems, such as depression, in adolescent...
Article
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Child-to-parent violence (CPV) is a type of violence that has received little attention despite its increasing rates in Western countries. Several models state that substance abuse constitutes a risk factor for aggressive behavior and that relationships among these variables can be reciprocal. In this study, the temporal relationships among substan...
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Este estudio tuvo como objetivo analizar y comparar la frecuencia de un amplio rango de métodos de disciplina parental entre España y Estados Unidos, en función del país, del sexo de los padres, del sexo de los hijos y del nivel educativo. Para ello, 2,755 estudiantes universitarios, 1,416 españoles y 1,339 norteamericanos, informaron retrospectiva...
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Although we rarely hear about it, children sometimes aggress against their parents. This is a difficult topic to study because abused parents and abusive children are both reluctant to admit the occurrence of child-to-parent aggression. There are very few research studies on this topic, and even fewer theoretical explanations of why it occurs. We p...
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-The use of information and communication technologies (ICT) as tools to intimidate, harass, and control the partner has been, so far, little studied in the literature. The aim of this study was to determine the extension and sex differences of victimization of cyber dating abuse, as well as the context in which it occurs, and its relationship with...
Article
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Full text here: https://sites.google.com/site/mgamezguadix/publicaciones This study has two objectives: (1) to investigate the occurrence of sexting and online sexual victimization (OSV) in adults by sex, age, and sexual orientation and 2) to analyze whether participating in sexting is a risk factor for OSV. The sample included 873 Spanish 18- to 6...