Parent-child relationship and smartphone addiction among Chinese adolescents: A longitudinal moderated mediation model

Protective and risk factors in problematic mobile phone use among adolescents: A three-wave longitude study

Adolescents' problematic mobile phone use (PMPU) has become increasingly severe. This study examined the changes in relationships between dimensions of PMPU, protective (positive psychological capital, i.e., optimism, hope, resilience, core self-evaluation) and risk (psychological distress, i.e., anxiety, depression, loneliness, and stress) factors within the network, aiming to identify the most influential factors over time and find the longitudinal predictive relationships between the factors and PMPU. A total of 1,170 Chinese adolescents participated over three waves (T1: January 2023, T2: August 2023, T3: February 2024). Cross-section network analysis showed that "core self-evaluation", "depression", "hope", "loss of control", and "stress_P" were the central nodes. "Stress_N" (sense of losing control and negative affective reactions) in risk factors and "affect control" (ability to regulate emotions) in protective factors were the bridge symptoms in the network across three timepoints. As shown in network comparison, the global strength of the network remained stable from T1 to T2 but increased from T2 to T3. The edge strength between "family support", "anxiety" and the nodes of PMPU weakened across the time. While, correlations between "loneliness", "goal planning", "positive thinking", "affect control" and PMPU nodes strengthened. The relationship between "Stress_N" and PMPU initially increasing before decreasing. Longitudinal cross-lagged network analysis revealed that "negative life consequence" and "craving" in PMPU strongly predicted protective/risk factors, while "hope," "affect control," and "core self-evaluation" were most susceptible to prediction. The findings highlight the significant role of "core self-evaluation" and "stress_N" in the development of adolescents' PMPU and the negative results of PMPU. Additionally, the changes in the network over time suggest that the factors influencing PMPU evolve, with various protective/risk factors gaining or losing significance at different stages. The results of CLPN emphasize the negative outcome of PMPU. Therefore, targeting interventions on the internalized symptoms may help alleviate the severity of PMPU among adolescents.

The lagged effects of parent-child relationship on internet addiction: parallel mediation of psychological need frustration and self-esteem

BACKGROUND

Adolescent Internet addiction has emerged as a major social and public health concern worldwide. Previous studies have indicated that parent-child relationship plays a crucial role in adolescent Internet addiction. However, most of these studies have adopted a cross-sectional design, making it difficult to reveal the lagged effects of the parent-child relationship on adolescent Internet addiction and its underlying developmental mechanisms.

METHODS

This study conducted a three-wave survey over one year, employing cluster sampling between October 2023 and October 2024. The survey assessed parent-child relationship, Internet addiction, basic psychological need frustration, and self-esteem among 2,483 adolescents (Mage = 13.82, SD = 1.53; 51.71% girls) from two middle schools in Shaanxi, China. Descriptive statistics and correlation analyses were performed using SPSS 26.0. Additionally, the lagged effect of T1 parent-child relationship on T3 Internet addiction, as well as the parallel mediating roles of T2 basic psychological needs frustration and T2 self-esteem in this lagged effect, were examined using PROCESS macro Model 4.

RESULTS

(1) The lagged effect of T1 parent-child relationship on T3 Internet addiction was significant (β = -0.20, SE = 0.03, p < 0.001). (2) T2 basic psychological need frustration (β = -0.06, SE = 0.01, 95% CI: -0.08, - 0.04) and T2 self-esteem (β = -0.02, SE = 0.01, 95% CI: -0.04, - 0.01) served as parallel mediators in the lagged effect of T1 parent-child relationship on T3 Internet addiction.

CONCLUSIONS

These findings provide empirical evidence for preventing and intervening in adolescent Internet addiction and hold significant implications for reducing its risk.

The effects of parent-child relationship, study stress, and mobile phone use on depressive symptoms among Chinese elementary school students: a moderated mediation model

Introduction

With the rising prevalence of depressive symptoms among younger individuals, depressive symptoms in elementary school students have become a focal issue of concern in society. This study investigated the association between parent-child relationship and depressive symptoms among Chinese elementary school students while testing a moderated mediation model to examine the mediating role of significant study stress and the moderating effect of frequent mobile phone use on this relationship.

Methods

We recruited elementary school students from grades 3 to 6 in S district of Chongqing, China, totaling 33,285 participants (51.72% girls; mean age = 10.36 years, SD = 1.24). Data was analyzed using structural equation modeling to assess the mediating and moderating effects of study stress and mobile phone use, respectively, on the relationship between parent-child relationship and depressive symptoms.

Results

Depressive symptoms prevalence in our study population was 16.3%. Both fair and poor parent-child relationships were significantly linked to an increased risk of depressive symptoms, with study stress serving as a mediator (indirect effects: fair parent-child relationship = 0.058, poor parent-child relationship = 0.031, p < 0.001). Frequent mobile phone use amplified the impact of fair parent-child relationships on study stress (β=0.024, SE=0.016, p < 0.05) and depressive symptoms (β = 0.021, SE = 0.018, p < 0.05) but did not moderate the relationship between poor parent-child relationships and these outcomes.

Discussion

These results emphasize the importance of nurturing parent-child relationship, monitoring study stress, and managing mobile phone usage to support students' mental health. Furthermore, the findings suggest that the impact of mobile phone usage on the mental health of elementary school students varies in complexity across different parent-child relationship contexts, providing valuable insights and recommendations for developing targeted preventive interventions for depressive symptoms in this demographic.

The association between digital addiction and interpersonal relationships: A systematic review and meta-analysis

Digital addiction (DA) has been identified as an emerging public health problem worldwide. However, the extent and direction of the association between DA and interpersonal relationships (IRs) are unknown. Does DA have adverse effects on IRs, and how credible is the evidence for this association in published analyses of real-world data? Using the PRISMA method, we conducted a meta-analysis to quantitatively synthesize the results of the relevant studies and obtain reliable effect size estimates and performed an analysis of moderating factors. A systematic literature search identified 98 studies involving 134,593 participants and 99 effect sizes. A significant negative association was observed between DA and IRs. Importantly, our meta-analysis revealed that the DA subtype has no significant moderating effect on IRs, suggesting that combining numerous categories of DA rather than focusing on specific forms of DA may be appropriate for understanding the relationship between DA and IRs. Relative to the IR subtype, the association between DA and offline relationships is significant and negative, whereas the association between DA and online relationships is significant and positive. The strength of the relationship is also influenced by the participants' sex ratio, educational level, and measurement tools. These results may help resolve the disagreement over the magnitude and direction of the association between DA and IRs and have potential implications for the treatment of DA.

Adverse Childhood Experiences and Excessive Recreational Screen Time Among Adolescents in the United Kingdom: A National Longitudinal Study

PURPOSE

This study aimed to investigate the associations between adverse childhood experiences (ACEs) and excessive recreational screen time.

METHODS

Using data from the UK Millennium Cohort Study, we examined the associations of prospectively collected individual ACEs, ACE scores, and poverty with excessive recreational screen time (>4 hours) across different media types. We ran further analyses to investigate sex differences in the associations of ACEs with excessive screen time. The robustness of these associations were tested by controlling for sociodemographic factors.

RESULTS

Among the included 11,439 adolescents (49.9% boys), those who experienced three or more ACEs were more likely to partake in excessive screen time compared to those with no ACEs after adjusting for covariates. This included recreational internet time at age 14, television time at age 14, electronic game time at ages 14 and 17, and social networking time at ages 14 and 17. We found similar associations between individual ACEs and excessive screen time. For example, parental mental health problems were associated with excessive recreational internet time (odds ratio [OR]: 1.28; 95% confidence interval [CI]: 1.15, 1.42), excessive television time (OR: 1.14; 95% CI: 1.01, 1.28), and excessive electronic game time (OR: 1.34; 95% CI: 1.16, 1.56) at age 14. Boys showed stronger associations between certain ACEs and excessive screen time compared to girls.

DISCUSSION

ACEs and poverty are associated with adolescents' later excessive recreational screen time, including excessive time spent on television watching, electronic games, and social networking.

Effective parental strategies against problematic smartphone use among adolescents: A 6-month prospective study

Problematic Smartphone Use (PSU) among adolescents is growing problem worldwide and multiple studies investigated its associated parental risk and protective factors. The available studies, however, typically do not address the multidimensional nature of PSU. They also rely heavily on cross-sectional designs with a small number of potentially contributing variables. This 6-month prospective study examines the relationships between a large range of parental factors with the three known dimensions of PSU: social environment pressure, emotional gain, and addiction-like behaviors. Specifically the study examines whether, and to what extent, the various dimensions of current and future PSU are related to parental support giving, general quality of communication, specific communication about smartphone use, and the four common mediation strategies. The sample comprised 1187 triads of mothers, fathers, and adolescents. The data-analysis pipeline consisted of three consecutive phases: (1) analyses of parental factors at baseline, (2) analyses of parental factors change over 6-months, and (3) interaction analyses between parental factors and the time-period of the study. The pipeline elicited three factors that moderated the change in PSU over time: Communication about smartphones with mothers, parental support giving, and parental co-use. The implications of these findings are discussed in the context of the existing literature and the familial, microsystem theoretical framework. Altogether, this prospective study scrutinized key parental factors and strategies that could be utilized by parents for coping with one of the most difficult parenting challenges of the digital era. Further research may build upon these findings to develop designated interventions to reduce PSU.

The effects of parent-child separation on the digital literacy of children and adolescents: A bidirectional perspective study

From a bidirectional perspective, the present cross-sectional study explored the impacts of parent-child separation on the digital literacy of children and adolescents. Drawing upon data from 1894 students (12-18 years, 49.33 % females) in Nanling county, China, we found that parent-child separation can negatively affect the digital literacy of children and adolescents, but effects differ between children experiencing parental migration or parental divorce. Parental mediation can act as a mediator in this process while children's digital feedback to parents may be considered as an auxiliary promoter. To further promote the digital literacy of children and adolescents experiencing parent-child separation, assigned tasks from adults in which children can practice knowledge and skills related to digital devices and the Internet are recommended.

The Relationship of Parent-Child Technoference and Child Problematic Smartphone Use: The Roles of Parent-Child Relationship, Negative Parenting Styles, and Children's Gender

Purpose

With the increasing ubiquity of smartphones in our daily lives, technoference has emerged as a novel threat to family relationships and child development. This study explored the impact of parent-child technoference on child problematic smartphone use and its underlying mechanism and potential gender difference among children.

Participants and Methods

The participants were 3032 fourth-grade students (42.6% female; 80.6% one-child families; 32.9% lower income level families, 33.3% middle income level families; Mage = 10.59 years, SD=0.32) from 535 primary schools. Students in the target classes were invited to participate anonymously in the questionnaire survey in classrooms. Then, SPSS, AMOS and other software were used to analyze the data.

Results

1) Parent-child technoference, negative parenting styles and child problematic smartphone use were positively correlated with each other, while they were negatively correlated with parent-child relationship; 2) Parent-child technoference can not only directly and positively predict child problematic smartphone use, but also indirectly and positively predict child problematic smartphone use through parent-child relationship and negative parenting styles respectively; 3) Parent-child relationship and negative parenting styles play a chain mediating role between parent-child technoference and child problematic smartphone use; 4) There are significant gender differences in the chain mediation model.

Conclusion

The results showed that parent-child technoference significantly affected child problematic smartphone use through a chain mediation of parent-child relationship and negative parenting styles. Gender differences were observed, with girls experiencing a more pronounced disruption in the parent-child relationship, while boys were more likely to develop problematic smartphone use. In cases of strained parent-child relationships due to technoference, girls also tended to perceive more negative parenting styles. These findings promote parents' understanding of the influencing factors and mechanisms of child problematic smartphone use, especially helpful for follow-up measures to prevent and intervene child problematic smartphone use from the perspective of families and parents.

Effect of paternal-maternal parenting styles on college students' internet addiction of different genders: The mediating role of life satisfaction

This study aimed to understand the current situation of paternal-maternal parenting style, life satisfaction, and internet addiction among college students and explored the influence of paternal-maternal parenting styles and life satisfaction on the internet addiction of male and female college students. A questionnaire survey was administered to 967 college students in China. Life satisfaction partially mediated the effect of the paternal-maternal parenting styles on the internet addiction among college students. However, this mediating role completely varied by gender, and the dimensions of parental styles also had different effects. For male college students, life satisfaction mediated the two dimensions of parenting styles (the father's emotional warmth, the father's overprotection) and internet addiction; the mother's emotional warmth directly related to the internet addiction. Among females, life satisfaction played a partial mediating role between two dimensions of parenting styles (the father's emotional warmth, the mother's interference and protection) and internet addiction. the father's punitiveness and over-involvement were directly related to female students' internet addiction. The study reveals that the mediating effect of life satisfaction on parenting styles and internet addiction among college students is influenced by gender, and the relationship between different parenting styles and internet addiction also varies. These findings indicate that paying attention to the role of the family, especially the parenting style of fathers, is crucial for preventing internet addiction in the future. Prevention and intervention should be treated differently for male and female students.

Perceived Social Mobility and Smartphone Dependence in University Students: The Roles of Hope and Family Socioeconomic Status

Purpose

Drawing upon the cognitive-behavioral model of pathological Internet use (PIU) and tunnel effect, this study aimed to construct a moderated mediation model from the perspective of social ecology. Specifically, the model investigated the relationship between perceived social mobility and smartphone dependence, with a focus on the mediating role of hope and the moderating effect of family socioeconomic status (SES) underlying this relationship.

Methods

A cross-sectional study was conducted with 718 Chinese university students (Mage = 19.19, 70.2% female) from Beijing, Henan, and Tianjin, who anonymously filled out the Perceptions of Socioeconomic Mobility Scale, Mobile Phone Addiction Index Scale, Openness to the Future Scale, and family socioeconomic status questionnaire. Preliminary data analysis was executed using SPSS 22.0, and the moderated mediation effect was tested using the latent moderated structural equations approach in Mplus 8.3.

Results

The results showed that (a) less perceived social mobility was linked with greater smartphone dependence; (b) hope mediated the aforementioned relationship; and (c) family SES moderated the first-stage path of the indirect effect through hope. For university students with low (rather than high) family SES, their level of hope increased with the improvement of perceived social mobility, and in turn, that of smartphone dependence decreased.

Conclusion

These findings suggest that positive perceptions of upward social class mobility and hopeful attitudes toward future opportunities and personal development among disadvantaged university students may alleviate their reliance on smartphones. Researchers and policymakers should pay attention to the role of individuals' perceptions of the macro environment in motivating specific risky behaviors among university students. Future interventions are essential to mitigate pessimistic environmental perceptions and foster a sense of hope among university students.

The Links Among Cumulative Ecological Risk and Smartphone Addiction, Sleep Quality in Chinese University Freshmen: A Two-Wave Study

Purpose

While previous research has highlighted the influence of family, school, and peer factors on smartphone addiction and sleep quality, the cumulative effects of these risk factors and their underlying causal relationships remain poorly understood. Therefore, based on the cumulative risk model and the bioecological model of human development, this study examined the longitudinal associations between cumulative ecological risk and smartphone addiction and sleep quality.

Methods

A survey was conducted among 653 Chinese university freshmen (mean age 18.56) at two distinct time points, with a 6-month interval. The initial assessment focused on family, school, and peer risk factors, while the subsequent assessment focused on smartphone addiction and sleep quality.

Results

Approximately 63.71% of university freshmen were found to be at risk of exposure. Compared to other risk-exposure groups, the group with no-risk exposure exhibited the lowest scores for smartphone addiction and sleep quality. The relationships between cumulative ecological risk and smartphone addiction and sleep quality displayed a linear pattern and a discernible "gradient effect". Smartphone addiction was identified as a fully mediating factor in the link between cumulative ecological risk and sleep quality, with a mediating effect value of 0.08 (representing 44.44% of the total effect).

Conclusion

University freshmen face various risks associated with their families, schools, and peers. The cumulative ecological risk can, directly and indirectly, impact sleep quality by influencing smartphone addiction. Given the observed "gradient effect" of cumulative ecological risk on smartphone addiction and sleep quality, it is imperative to adopt comprehensive risk prevention strategies to mitigate the impact of each risk factor.

Discrepancies in Adolescent-Parent Perceptions of Parental Phubbing and Their Relevance to Adolescent Smartphone Dependence: The Mediating Role of Parent-Child Relationship

Parental phubbing behavior is a significant predictor of adolescent smartphone dependence. However, previous research has mainly focused on the child and adolescent's perspective, overlooking potential differences in how parents and their children perceive parental phubbing. Therefore, this study investigates whether disparities exist in how parents and adolescents perceive parental phubbing and how these perceptual differences impact adolescent smartphone dependence. We also explore the role of the parent-child relationship in this context. In this study, 728 families from a middle school in Wuhan were selected and surveys were administered to both children and parents. The findings are as follows: (1) Significant perceptual differences were found between parents and adolescents regarding parental phubbing. (2) These perceptual discrepancies positively predict adolescent smartphone dependence and negatively impact parent-child relationships. Additionally, parent-child relationships have a negative influence on adolescent smartphone dependence. (3) The parent-child relationship serves as a mediator between perceptual differences in parental phubbing behavior and adolescent smartphone dependence. In summary, this research highlights the importance of considering both parent and adolescent perspectives on parental phubbing and emphasizes the role of the parent-child relationship in influencing adolescent smartphone dependence.

Association of parent-child relationship quality and problematic mobile phone use with non-suicidal self-injury among adolescents

BACKGROUND

Non-suicidal self-injury behavior (NSSI) is a common mental health threat among adolescents. Poor parent-child relationship (PCR) and problematic mobile phone use (PMPU) are risk factors for NSSI. We aimed to explore the impact of PCR quality, PMPU, and their interaction effects on NSSI among adolescents in China, as well as the sex difference.

METHOD

A survey was conducted among school students in 4 provinces in China between 2017 and 2018. The study included 14,500 valid participants. The students' general demographic characteristics was collected, and further data on PCR quality, PMPU, and NSSI were obtained through self-rated questionnaire. Chi-square test, binomial logistic regression models, and the Andersson Excel were used for data analysis.

RESULTS

The 12-month prevalence of NSSI was 27.3%. Lower PCR quality and PMPU were significantly associated with NSSI, respectively. The low PCR + yes PMPU group had the greatest association with NSSI, followed by the high PCR + yes PMPU group, low PCR + no PMPU group. Moreover, in low father-child relationship + yes PMPU group, females had a higher risk of NSSI than males; in high mother-child relationship + yes PMPU group, females had a higher risk of NSSI than males. Additive interaction analysis indicated that mother-child relationship quality and PMPU were associated with increased risks of NSSI, in the subgroup of males.

CONCLUSIONS

The findings underline the importance of simultaneously studying the quality of PCR and PMPU for a comprehensive understanding of NSSI behavior, and especially highlights the significance of maternal relationship quality.

Autonomy-relatedness Patterns and their Association with Academic and Psychological Adjustment among Chinese Adolescents

Establishing autonomy and maintaining relatedness with parents are two of the most crucial goals for adolescents and meeting these goals can be critical for academic and psychological adjustment. A two-dimensional framework was proposed for exploring the integrative synthesis of autonomy and relatedness, but its cultural applicability was limited. To better account for the situations associated with non-Western cultural context, this study extended the prior framework to three dimensions (volition, functional independence, and relatedness) and utilized latent profile analysis to explore the configurations and their concurrent and longitudinal (one year later) associations with adjustment (academic engagement, academic buoyancy, depressive symptoms, and externalizing problems). The study collected data from 3992 Chinese adolescents (51.33% girls, M_age = 15.41, SD = 0.55). Latent profile analyses identified five profiles: High, High Functional Independence, Moderate, Low Functional Independence, and Extremely Low Functional Independence. The High profile was the robust optimal pattern for academic and psychological adjustment, while the Low Functional Independence and Extremely Low Functional Independence were risk patterns over time. The High Functional Independence profile was only conducive to academic areas but not to psychological areas. Findings demonstrated the necessity of the three-dimensional framework in this field.

Association of Parental Screen Addiction with Young Children's Screen Addiction: A Chain-Mediating Model

Preschool children are immersed in screen media, yet little study has been conducted on screen addiction among them. This study aimed to investigate the relationship between parental screen addiction and young children's screen addiction and to verify factors that mediate this relationship. A total of 477 parents of kindergarteners (3-6 years old) were recruited via six kindergartens in Henan province, China. They completed the Problematic Media Use Measure Short Form of Children, the Self-Rating Anxiety Scale, the Child-Parent Relationship Scale, and the Parental Screen Addiction Scale. The results showed that the relationships between each pair of parental screen addiction, parental anxiety, and children's screen addiction were significantly positive, but the parent-child relationship was negatively correlated with the other variables. Parental screen addiction can directly and indirectly affect children's screen addiction through parental anxiety and the parent-child relationship. The findings contribute to the development of family protection mechanisms against screen addiction in children.

How Does Parent-Adolescent Conflict and Deviant Peer Affiliation Affect Cyberbullying: Examining the Roles of Moral Disengagement and Gender

Purpose

With the widespread use of the Internet and mobile phone, cyberbullying has become a new type of bullying among adolescents. It is of great practical significance to explore the relevant factors affecting cyberbullying for prevention and intervention of adolescents’ cyberbullying. However, few studies have considered the effect of both the family and social factors on cyberbullying. Therefore, the current study examines whether the parent-adolescent conflict as a family factor and deviant peer affiliation as a social factor have an effect on adolescents’ cyberbullying, as well as the role of moral disengagement and gender.

Methods

A total of 777 middle school students (females = 336; mean age = 13.57; SD = 0.98) were surveyed by using the Parent-child Relationship Questionnaire, Deviant Peer Affiliation Questionnaire, Moral Disengagement Questionnaire and Cyber Bullying Behavior Questionnaire. SPSS21.0 was used to conduct descriptive statistics, Pearson correlation analysis and T-test, PROCESS were used to conduct significance test of moderated mediation effect on the data.

Results

Parent-adolescent conflict does not directly predict cyberbullying. Moral disengagement played a complete mediating role between parent-adolescent conflict and cyberbullying, and gender played a moderating role between moral disengagement and cyberbullying. Deviant peer affiliation directly predict cyberbullying. Moral disengagement played a partially mediating role between parent-adolescent conflict and cyberbullying, and gender played a moderating role between moral disengagement and cyberbullying.

Conclusion

Attention should be paid to the effect of moral disengagement on cyberbullying in family and social factors, as well as the role of gender.

Parental Efficacy in Managing Smartphone Use of Adolescents with Attention-Deficit/Hyperactivity Disorder: Parental and Adolescent Related Factors

Parental management has an important role in preventing problematic smartphone use among adolescents with attention-deficit/hyperactivity disorder (ADHD). This study aimed to examine the parental factors (e.g., demographics, depressive symptoms and parenting styles) and adolescent factors (e.g., demographics, ADHD and oppositional defiant disorder [ODD] symptoms, and problematic smartphone use) related to parental efficacy in managing adolescent smartphone use (PEMASU) among 237 parents of adolescents with ADHD. PEMASU was measured by the Parental Smartphone Use Management Scale. Parental depressive symptoms and parenting styles (parental affection/care and overprotection) were measured by the Center for Epidemiologic Studies—Depression Scale and Parental Bonding Instrument, respectively. Adolescent ADHD and ODD symptoms and problematic smartphone use were measured by the Swanson, Nolan, and Pelham, version IV scale and Problematic Smartphone Use Questionnaire, respectively. Three models of hierarchical linear regression were performed to examine the parental and adolescent factors related to PEMASU. The results indicated that adolescent older age and more severe ODD symptoms and problematic smartphone use were significantly associated with lower PEMASU, whereas greater parental affection/care was significantly associated with higher PEMASU. This study demonstrated that both parental and adolescent factors contribute to PEMASU among parents of adolescents with ADHD. Intervention programs aiming to enhancing PEMASU need to take these related factors into consideration.

Cognitive bias toward the Internet: The causes of adolescents' Internet addiction under parents' self-affirmation consciousness

The Internet plays a crucial part in the adolescent life. However, as a product of modernization, the Internet has brought a lifestyle different from that of our parents who tend to regard excessive exposure to the Internet as a manifestation of the adolescent Internet addiction. The cognitive bias against the Internet seem to have been arisen among the parents. Under the theoretical framework of self-efficacy and empathy, this study adopts PLS-SEM to analyze the contributing factors of the adolescent Internet addiction from the perspective of self-affirmation consciousness of parents. The result demonstrates that self-affirmation consciousness has a significant positive effect on the empathy process; the empathy process and self-affirmation have a significant positive effect on cognitive bias; and the empathy process acts as a mediator between self-affirmation and cognitive bias. To sum up, through the investigation of the causes of adolescent Internet addiction, this study explores the formation process of parents' cognitive bias toward the Internet under the influence of self-affirmation consciousness, verifying the practical effects of empathy in the process of promoting rational thinking of parents toward the Internet and adolescent Internet use, and at the same time promoting the harmonious development of parent-child relationships to a certain extent.