Lenka Dědková
Biographic Data
| ID | 197803 |
|---|---|
| NAME | Lenka Dědková |
| GIVEN NAMES | Lenka |
| FAMILY NAME | Dědková |
| SIGNATURE | DĚDKOVÁ L |
| AFFILIATIONS | Masaryk University |
| ORCID | 0000-0002-0807-1183 |
| VERIFIED | Yes |
| TOTAL WORKS | 25 |
| TOTAL CITATIONS | 29 |
| AUTHOR COUNT | 25 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2012 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
Adolescents' offline meetings with online contacts: Longitudinal relationships between the behavior and perceptions of risks, benefits, and peer involvement
Adolescents commonly meet new people online, and some later meet them in person. Such face‐to‐face meetings offer benefits alongside risks, which are emphasized in public discourse. Thus, adolescents' perceptions of how risky, beneficial, and normative the meetings are key to understanding their decisions to meet. Yet research on their effects is scarce and mostly cross‐sectional. Drawing on the health belief model and the theory of planned behav…
Defender or Outsider? Understanding Individual, Social, and Contextual Factors in Cyberbystander Behavior in Cyberaggression
Bystanders’ responses play an important role in cyberaggression incidents among youth. This study examines factors differentiating cyberbystander roles as defenders or outsiders. Individual factors (gender, age, self-efficacy, and digital skills), social factors (parent, teacher, and peer mediation), contextual factors (victim’s age relative to the bystander, perceived victim’s emotional (upset) response, and bystander-victim relationship quality…
Why adolescents do not confide in their parents about online sexual solicitation: A mixed-method study
The reciprocal relationship between consensual sexting and peer support among adolescents: A three-wave longitudinal study
Who Is Searching for Cyberhate? Adolescents' Characteristics Associated with Intentional or Unintentional Exposure to Cyberhate
Cyberhate is one of the online risks that adolescents can experience online. It is considered a content risk when it is unintentionally encountered and a conduct risk when the user actively searches for it. Previous research has not differentiated between these experiences, although they can concern different groups of adolescents and be connected to distinctive risk factors. To address this, our study first focuses on both unintentional and inte…
What do parents know about children's risky online experiences? The role of parental mediation strategies
Parental mediation of online interactions and its relation to adolescents’ contacts with new people online: The role of risk perception
To ensure their children's safety online, parents can utilize number of strategies, including active and restrictive parental mediation. Active mediation encompasses parents discussing and advising children about safe usage of the internet, whereas restrictive mediation means limiting children's internet usage. Both strategies aim to affect children's online behavior, especially to minimize online risks. Using a sample of 1031 adolescents aged 11…
Czech Adolescents’ Face-to-Face Meetings With People from the Internet: The Role of Adolescents’ Motives and Expectations
Research of face-to-face meetings between adolescents and people met online stands on untested assumptions that these meetings are uniform, and adolescents attend them to expand their social circle. It is also unclear what makes such meetings pleasant or unpleasant. This study examined meetings of 611 Czech adolescents (age 11–16, M age = 14.04, SD = 1.67, 47.1% female). Face-to-face meetings attended with friendly, romantic, or instrumental moti…
Comparing Nonresponders and Responders of Online Intercept Surveys: A Large-Scale Experimental ICT Security-Related Study
Online surveys have become a popular way to collect data. However, response rates are low, specifically for online intercept-based surveys, which can be as low as 1%. This raises questions about the accuracy of the inferences based on these results. Furthermore, it is difficult to compare the characteristics and behavior of the responders and nonresponders as there is very limited information on nonresponders. The objective of this article is to …
Investigating Installers of Security Software in 20 Countries: Individual- and Country-Level Differences
This article provides detailed evidence about the installers of online security software on personal computers according to differences among clusters of countries and various other country characteristics. The study presents unique data based on real installations around the world. The data are based on a large-scale quantitative study ( N = 18,727 ) which was prepared in cooperation with an international security company. The cluster analyses r…
Digital security in families: The sources of information relate to the active mediation of internet safety and parental internet skills
Home users of information and communication technologies are often the target of online attacks. At the same time they tend to lack the knowledge and skills to effectively protect themselves. Families with children are in a particularly difficult position since parents are responsible not only for their own digital safety, but of their children’s too. This study focuses on the sources of digital security information used by parents. The aim of th…
Coping with Public and Private Face-to-Face and Cyber Victimization among Adolescents in Six Countries: Roles of Severity and Country
This study investigated the role of medium (face-to-face, cyber) and publicity (public, private) in adolescents' perceptions of severity and coping strategies (i.e., avoidant, ignoring, helplessness, social support seeking, retaliation) for victimization, while accounting for gender and cultural values. There were 3432 adolescents (ages 11-15, 49% girls) in this study; they were from China, Cyprus, the Czech Republic, India, Japan, and the United…
Who Is Smart with Their Smartphones? Determinants of Smartphone Security Behavior
Smartphones have recently become a major target for cybercriminals due to large amounts of sensitive data and credentials being stored on the devices. To protect themselves against cyberthreats, users can employ a range of security behaviors. Although research has largely focused on computer security, relatively little is known about personal smartphone security behavior. The goal of our study was to evaluate determinants of smartphone security b…
Information sources about face-to-face meetings with people from the Internet: Gendered influence on adolescents’ risk perception and behavior
Adolescents commonly make new social connections online that sometimes result in face-to-face meetings. Despite potential benefits, risk-focused discourse dominates public debates and shapes information shared by sources important for adolescents—news media, preventive programs, peers, parents, and teachers. Our study examines how information about face-to-face meetings from these sources relates to adolescents’ risk perception and engagement in …
Cyberostracism: Emotional and behavioral consequences in social media interactions
This study focuses on the effect of cyberostracism on social networking sites. Based on the temporal need-threat model of ostracism, we examined a) reflexive reactions, specifically worsened mood and threats to the four fundamental needs (i.e., belongingness, self-esteem, meaningful existence, and control), and b) reflective reactions, in the form of prosocial, antisocial, and avoidance behavior. We also focused on the role of social anxiety. Usi…
Factors influencing interactions between adolescents and unknown people from the internet: Findings from five European countries
A considerable amount of adolescents’ interpersonal communication takes place online. Adolescents use the internet to interact with friends and family, but also with people who were previously unknown to them. This study focuses on two types of interactions with unknown people from the internet: online communication and offline face-to-face meetings. We used theoretical frameworks of adolescent developmental tasks and risk-taking behavior to iden…
Online Parental Mediation: Associations of Family Members' Characteristics to Individual Engagement in Active Mediation and Monitoring
This study focuses on two strategies for online parental mediation: active mediation (sharing and discussing activities with children) and monitoring (checking the children's internet activity after use). Previous studies have shown the importance of respondents' and children's characteristics regarding mediation strategies. Using a socioecological model of parenting, this study also considers the characteristics of the other parent in the family…
Youth interaction with online strangers: Experiences and reactions to unknown people on the Internet
Previous research on youths’ experiences with online strangers has mostly utilized quantitative designs which may result in the omission of important parts of the youths’ experiences and perceptions. In this qualitative study, we adopt a child-centred approach and focus on the children’s and adolescents’ experiences with unknown people from the Internet. This is one of the most pronounced parental concerns, despite the fact that an online presenc…
Face-to-face and Cyber Victimization among Adolescents in Six Countries: The Interaction between Attributions and Coping Strategies
Differences in Severity and Emotions for Public and Private Face-to-Face and Cyber Victimization Across Six Countries
The purpose of this study was to examine the role of medium (face-to-face, cyber) and publicity (public, private) in perceptions of severity and emotional responses to victimization among adolescents from China, Cyprus, the Czech Republic, India, Japan, and the United States, while controlling for gender, individualism, and collectivism. There were 3,432 adolescents (age range = 11-15 years, 49% girls) included in this study. They read four hypot…
Differences in Coping Strategies for Public and Private Face-to-Face and Cyber Victimization among Adolescents in Six Countries
The aim of this study was to examine the role of publicity (private versus public) and medium (face-to-face versus cyber) in adolescents’ coping strategies for hypothetical victimization, while also considering culture. Participants were adolescents from China, Cyprus, the Czech Republic, India, Japan, and the United States. The study also controlled for adolescents’ gender, individualism, and collectivism. Adolescents completed questionnaires on…
Whom to Trust: The Role of Mediation and Perceived Harm in Support Seeking by Cyberbullying Victims
This study focuses on two coping strategies in cyberbullying: talking to parents and talking to peers. The subsample of cyberbullying victims aged 9–16 ( N = 1395; 59% female) from the EU Kids Online II project was analysed. We predicted talking to parents and peers according to mediation style, perceived harm, support‐seeking tendencies, parental knowledge of the child's activities online, age and gender. The results show that perceived harm and…
Empathic responses by cyberbystanders: The importance of proximity
Cyberaggression, and its' specific sub-type, cyberbullying, have become a widely debated and studied issues, but we still lack knowledge about cyberbystanders, whose reactions (or lack thereof) can play a crucial role. One of the important factors determining behavioral outcomes is cyberbystanders’ empathic response to the incident. Certain features of cyberaggression incidents (e.g. distance and the invisibility of those involved) raise the ques…
Effectiveness of coping strategies for victims of cyberbullying
Although cyberbullying is a well-studied online risk, little is known about the effectiveness of various coping strategies for its victims. Therefore, this study on 2,092 Czech children aged 12-18 examined which coping strategies were applied most often and to what extent victims of cyber aggression judged them to be effective. Effectiveness was measured in two ways: the extent to which the coping strategy buffered negative emotions, and the exte…
Bystanders' Support of Cyberbullied Schoolmates
This study examined factors that increase or decrease the support a bystander offered to a victim of cyberbullying. Possible determinants of supportive behaviour were analyzed using a four‐step hierarchical regression analysis on data from 156 Czech children (12–18 years old; M = 15.1; 54% females) who witnessed their schoolmates being victims of cyberbullying. Among individual characteristics, only a general tendency toward prosocial behaviour w…
Bystanders' Support of Cyberbullied Schoolmates
This study examined factors that increase or decrease the support a bystander offered to a victim of cyberbullying. Possible determinants of supportive behaviour were analyzed using a four‐step hierarchical regression analysis on data from 156 Czech children (12–18 years old; M = 15.1; 54% females) who witnessed their schoolmates being victims of cyberbullying. Among individual characteristics, only a general tendency toward prosocial behaviour w…
Cyberostracism: Emotional and behavioral consequences in social media interactions
This study focuses on the effect of cyberostracism on social networking sites. Based on the temporal need-threat model of ostracism, we examined a) reflexive reactions, specifically worsened mood and threats to the four fundamental needs (i.e., belongingness, self-esteem, meaningful existence, and control), and b) reflective reactions, in the form of prosocial, antisocial, and avoidance behavior. We also focused on the role of social anxiety. Usi…
Online Parental Mediation: Associations of Family Members' Characteristics to Individual Engagement in Active Mediation and Monitoring
This study focuses on two strategies for online parental mediation: active mediation (sharing and discussing activities with children) and monitoring (checking the children's internet activity after use). Previous studies have shown the importance of respondents' and children's characteristics regarding mediation strategies. Using a socioecological model of parenting, this study also considers the characteristics of the other parent in the family…
Information sources about face-to-face meetings with people from the Internet: Gendered influence on adolescents’ risk perception and behavior
Adolescents commonly make new social connections online that sometimes result in face-to-face meetings. Despite potential benefits, risk-focused discourse dominates public debates and shapes information shared by sources important for adolescents—news media, preventive programs, peers, parents, and teachers. Our study examines how information about face-to-face meetings from these sources relates to adolescents’ risk perception and engagement in …
Factors influencing interactions between adolescents and unknown people from the internet: Findings from five European countries
A considerable amount of adolescents’ interpersonal communication takes place online. Adolescents use the internet to interact with friends and family, but also with people who were previously unknown to them. This study focuses on two types of interactions with unknown people from the internet: online communication and offline face-to-face meetings. We used theoretical frameworks of adolescent developmental tasks and risk-taking behavior to iden…
Differences in Severity and Emotions for Public and Private Face-to-Face and Cyber Victimization Across Six Countries
The purpose of this study was to examine the role of medium (face-to-face, cyber) and publicity (public, private) in perceptions of severity and emotional responses to victimization among adolescents from China, Cyprus, the Czech Republic, India, Japan, and the United States, while controlling for gender, individualism, and collectivism. There were 3,432 adolescents (age range = 11-15 years, 49% girls) included in this study. They read four hypot…
Empathic responses by cyberbystanders: The importance of proximity
Cyberaggression, and its' specific sub-type, cyberbullying, have become a widely debated and studied issues, but we still lack knowledge about cyberbystanders, whose reactions (or lack thereof) can play a crucial role. One of the important factors determining behavioral outcomes is cyberbystanders’ empathic response to the incident. Certain features of cyberaggression incidents (e.g. distance and the invisibility of those involved) raise the ques…
Bystanders' Support of Cyberbullied Schoolmates
This study examined factors that increase or decrease the support a bystander offered to a victim of cyberbullying. Possible determinants of supportive behaviour were analyzed using a four‐step hierarchical regression analysis on data from 156 Czech children (12–18 years old; M = 15.1; 54% females) who witnessed their schoolmates being victims of cyberbullying. Among individual characteristics, only a general tendency toward prosocial behaviour w…
Effectiveness of coping strategies for victims of cyberbullying
Although cyberbullying is a well-studied online risk, little is known about the effectiveness of various coping strategies for its victims. Therefore, this study on 2,092 Czech children aged 12-18 examined which coping strategies were applied most often and to what extent victims of cyber aggression judged them to be effective. Effectiveness was measured in two ways: the extent to which the coping strategy buffered negative emotions, and the exte…
Empathic responses by cyberbystanders: The importance of proximity
Cyberaggression, and its' specific sub-type, cyberbullying, have become a widely debated and studied issues, but we still lack knowledge about cyberbystanders, whose reactions (or lack thereof) can play a crucial role. One of the important factors determining behavioral outcomes is cyberbystanders’ empathic response to the incident. Certain features of cyberaggression incidents (e.g. distance and the invisibility of those involved) raise the ques…
Differences in Coping Strategies for Public and Private Face-to-Face and Cyber Victimization among Adolescents in Six Countries
The aim of this study was to examine the role of publicity (private versus public) and medium (face-to-face versus cyber) in adolescents’ coping strategies for hypothetical victimization, while also considering culture. Participants were adolescents from China, Cyprus, the Czech Republic, India, Japan, and the United States. The study also controlled for adolescents’ gender, individualism, and collectivism. Adolescents completed questionnaires on…
Whom to Trust: The Role of Mediation and Perceived Harm in Support Seeking by Cyberbullying Victims
This study focuses on two coping strategies in cyberbullying: talking to parents and talking to peers. The subsample of cyberbullying victims aged 9–16 ( N = 1395; 59% female) from the EU Kids Online II project was analysed. We predicted talking to parents and peers according to mediation style, perceived harm, support‐seeking tendencies, parental knowledge of the child's activities online, age and gender. The results show that perceived harm and…
Differences in Severity and Emotions for Public and Private Face-to-Face and Cyber Victimization Across Six Countries
The purpose of this study was to examine the role of medium (face-to-face, cyber) and publicity (public, private) in perceptions of severity and emotional responses to victimization among adolescents from China, Cyprus, the Czech Republic, India, Japan, and the United States, while controlling for gender, individualism, and collectivism. There were 3,432 adolescents (age range = 11-15 years, 49% girls) included in this study. They read four hypot…
Youth interaction with online strangers: Experiences and reactions to unknown people on the Internet
Previous research on youths’ experiences with online strangers has mostly utilized quantitative designs which may result in the omission of important parts of the youths’ experiences and perceptions. In this qualitative study, we adopt a child-centred approach and focus on the children’s and adolescents’ experiences with unknown people from the Internet. This is one of the most pronounced parental concerns, despite the fact that an online presenc…
Face-to-face and Cyber Victimization among Adolescents in Six Countries: The Interaction between Attributions and Coping Strategies
Cyberostracism: Emotional and behavioral consequences in social media interactions
This study focuses on the effect of cyberostracism on social networking sites. Based on the temporal need-threat model of ostracism, we examined a) reflexive reactions, specifically worsened mood and threats to the four fundamental needs (i.e., belongingness, self-esteem, meaningful existence, and control), and b) reflective reactions, in the form of prosocial, antisocial, and avoidance behavior. We also focused on the role of social anxiety. Usi…
Factors influencing interactions between adolescents and unknown people from the internet: Findings from five European countries
A considerable amount of adolescents’ interpersonal communication takes place online. Adolescents use the internet to interact with friends and family, but also with people who were previously unknown to them. This study focuses on two types of interactions with unknown people from the internet: online communication and offline face-to-face meetings. We used theoretical frameworks of adolescent developmental tasks and risk-taking behavior to iden…
Online Parental Mediation: Associations of Family Members' Characteristics to Individual Engagement in Active Mediation and Monitoring
This study focuses on two strategies for online parental mediation: active mediation (sharing and discussing activities with children) and monitoring (checking the children's internet activity after use). Previous studies have shown the importance of respondents' and children's characteristics regarding mediation strategies. Using a socioecological model of parenting, this study also considers the characteristics of the other parent in the family…
Who Is Smart with Their Smartphones? Determinants of Smartphone Security Behavior
Smartphones have recently become a major target for cybercriminals due to large amounts of sensitive data and credentials being stored on the devices. To protect themselves against cyberthreats, users can employ a range of security behaviors. Although research has largely focused on computer security, relatively little is known about personal smartphone security behavior. The goal of our study was to evaluate determinants of smartphone security b…
Information sources about face-to-face meetings with people from the Internet: Gendered influence on adolescents’ risk perception and behavior
Adolescents commonly make new social connections online that sometimes result in face-to-face meetings. Despite potential benefits, risk-focused discourse dominates public debates and shapes information shared by sources important for adolescents—news media, preventive programs, peers, parents, and teachers. Our study examines how information about face-to-face meetings from these sources relates to adolescents’ risk perception and engagement in …
Comparing Nonresponders and Responders of Online Intercept Surveys: A Large-Scale Experimental ICT Security-Related Study
Online surveys have become a popular way to collect data. However, response rates are low, specifically for online intercept-based surveys, which can be as low as 1%. This raises questions about the accuracy of the inferences based on these results. Furthermore, it is difficult to compare the characteristics and behavior of the responders and nonresponders as there is very limited information on nonresponders. The objective of this article is to …
Investigating Installers of Security Software in 20 Countries: Individual- and Country-Level Differences
This article provides detailed evidence about the installers of online security software on personal computers according to differences among clusters of countries and various other country characteristics. The study presents unique data based on real installations around the world. The data are based on a large-scale quantitative study ( N = 18,727 ) which was prepared in cooperation with an international security company. The cluster analyses r…
Digital security in families: The sources of information relate to the active mediation of internet safety and parental internet skills
Home users of information and communication technologies are often the target of online attacks. At the same time they tend to lack the knowledge and skills to effectively protect themselves. Families with children are in a particularly difficult position since parents are responsible not only for their own digital safety, but of their children’s too. This study focuses on the sources of digital security information used by parents. The aim of th…
Coping with Public and Private Face-to-Face and Cyber Victimization among Adolescents in Six Countries: Roles of Severity and Country
This study investigated the role of medium (face-to-face, cyber) and publicity (public, private) in adolescents' perceptions of severity and coping strategies (i.e., avoidant, ignoring, helplessness, social support seeking, retaliation) for victimization, while accounting for gender and cultural values. There were 3432 adolescents (ages 11-15, 49% girls) in this study; they were from China, Cyprus, the Czech Republic, India, Japan, and the United…
Who Is Searching for Cyberhate? Adolescents' Characteristics Associated with Intentional or Unintentional Exposure to Cyberhate
Cyberhate is one of the online risks that adolescents can experience online. It is considered a content risk when it is unintentionally encountered and a conduct risk when the user actively searches for it. Previous research has not differentiated between these experiences, although they can concern different groups of adolescents and be connected to distinctive risk factors. To address this, our study first focuses on both unintentional and inte…
What do parents know about children's risky online experiences? The role of parental mediation strategies
Parental mediation of online interactions and its relation to adolescents’ contacts with new people online: The role of risk perception
To ensure their children's safety online, parents can utilize number of strategies, including active and restrictive parental mediation. Active mediation encompasses parents discussing and advising children about safe usage of the internet, whereas restrictive mediation means limiting children's internet usage. Both strategies aim to affect children's online behavior, especially to minimize online risks. Using a sample of 1031 adolescents aged 11…
Czech Adolescents’ Face-to-Face Meetings With People from the Internet: The Role of Adolescents’ Motives and Expectations
Research of face-to-face meetings between adolescents and people met online stands on untested assumptions that these meetings are uniform, and adolescents attend them to expand their social circle. It is also unclear what makes such meetings pleasant or unpleasant. This study examined meetings of 611 Czech adolescents (age 11–16, M age = 14.04, SD = 1.67, 47.1% female). Face-to-face meetings attended with friendly, romantic, or instrumental moti…
The reciprocal relationship between consensual sexting and peer support among adolescents: A three-wave longitudinal study
Why adolescents do not confide in their parents about online sexual solicitation: A mixed-method study
Adolescents' offline meetings with online contacts: Longitudinal relationships between the behavior and perceptions of risks, benefits, and peer involvement
Adolescents commonly meet new people online, and some later meet them in person. Such face‐to‐face meetings offer benefits alongside risks, which are emphasized in public discourse. Thus, adolescents' perceptions of how risky, beneficial, and normative the meetings are key to understanding their decisions to meet. Yet research on their effects is scarce and mostly cross‐sectional. Drawing on the health belief model and the theory of planned behav…
Defender or Outsider? Understanding Individual, Social, and Contextual Factors in Cyberbystander Behavior in Cyberaggression
Bystanders’ responses play an important role in cyberaggression incidents among youth. This study examines factors differentiating cyberbystander roles as defenders or outsiders. Individual factors (gender, age, self-efficacy, and digital skills), social factors (parent, teacher, and peer mediation), contextual factors (victim’s age relative to the bystander, perceived victim’s emotional (upset) response, and bystander-victim relationship quality…
Psychology (20 works) · Child Development and Digital Technology (16 works) · Developmental psychology (15 works) · Social Psychology (15 works) · Bullying, Victimization, and Aggression (10 works) · Impact of Technology on Adolescents (9 works) · Social Psychology (9 works) · Computer Science (8 works) · Social Media and Politics (8 works) · Sociology (8 works)