How parental mediation affects adolescents’ problematic smartphone use: the chain mediating role of basic psychological needs and positive outcome expectations

It’s important to recognize that adolescents often use their phones and other electronic devices at home, usually with their families. Parents have a vital role to play in guiding their children’s smartphone use, as they are their children’s first teachers and have a significant impact on their media education. Parental mediation involves the proactive steps taken by parents to mitigate the adverse effects of media on children and adolescents. These actions encompass a range of strategies that parents use to monitor, supervise, and provide guidance on the media and content to which minors are exposed (Fu et al., 2020; Martín-Cárdaba et al., 2024).

In the modern era of new media, researchers have outlined three key types of parental mediation:

(a) Active mediation, in which parents offer guidance on media content and usage through interactive forms such as discussions and explanations; (b) Restrictive mediation, where parents establish limits on their children’s media use; and (c) Parental supervision, involving parents keeping a close watch on their children’s media consumption, including checking emails and websites (Nikken and Jansz, 2014).

This study specifically focuses on two types of mediation strategies: active mediation and parental supervision. Whereas restrictive mediation is often the result of discussions and are set on a family level (e.g., there is a parental control software installed on the children’s device or not), active mediation and parental supervision can easily be applied individually and differently by each parent: each can choose (more freely than in the case of restrictions) how much they engage in active mediation and parental supervision (Dedkova and Smahel, 2019). As active mediation and parental supervision better represent parental mediation, this study mainly explores the impact mechanisms of these two aspects on problematic smartphone use.

Parental mediation theory underscores how parents strive to reduce the negative influences of media on their children (Clark, 2011). Through parental mediation strategies, children can take advantage of digital opportunities while being shielded from online dangers and risks (Durak and Kaygin, 2020). Social cognitive theory (Bandura, 1986) highlights the dynamic interplay among environmental factors, personal traits, and behaviors. As a key environmental factor, parental mediation plays a critical role in shaping adolescents’ smartphone behavior (Fu et al., 2020; Li and Liu, 2025). Active mediation encourages constructive dialogs between parents and teens about smartphone use, thereby strengthening the parent–child bond (Fu et al., 2020). Adolescents who enjoy close relationships with their parents tend to be more open in communication, sharing their thoughts, emotions, and behaviors more willingly. With parental active mediation, adolescents are guided toward a balanced perspective on smartphone use, helping them regulate overuse and adopt healthier digital habits (Fu et al., 2020). Thus, active mediation represents a practical and effective parental approach to addressing adolescents’ problematic smartphone behavior (Fu et al., 2020; Çiçek et al., 2021). Nevertheless, adolescents’ growing need for independence may cause parental oversight to backfire, triggering unintended negative effects (Li and Liu, 2025). For instance, excessive supervision might incite rebellious emotions, damage the parent–child relationship, convey distrust, and paradoxically increase the likelihood of problematic smartphone use (Gao et al., 2022).

As such, this study proposes the research hypothesis 1:

According to self-determination theory (Deci and Ryan, 2000), human beings possess three basic psychological needs: the need for autonomy (the desire to regulate one’s own behavior without external coercion), the need for relatedness (the desire to establish and maintain close relationships with others), and the need for competence (the desire to feel effective in dealing with important tasks). The fulfillment of these basic psychological needs constitutes essential “nutrients” for healthy individual development. When the environment in which an individual resides fails to satisfy these needs, maladjustment may occur, or the individual may turn to alternative contexts to seek fulfillment. From this perspective, the satisfaction of basic psychological needs is not only an “outcome” influenced by the environmental context, but also serves as an internal “motive” that drives compensatory behaviors when such needs are unmet (Gao et al., 2022). According to self-determination theory, supportive parenting approaches help meet adolescents’ basic psychological needs, encouraging trust formation and the growth of positive behavioral patterns (Deci and Ryan, 2000). In contrast, unsupportive parenting may hinder adolescent development by failing to offer emotional warmth, adequate support, and empathy. This lack of support may drive adolescents to turn to the internet for psychological fulfillment as a way to cope with feelings of rejection in real life. Prior research indicates that emotionally warm and autonomy-supportive parenting nurtures adolescents’ sense of being accepted and empowered (Gao et al., 2022). These parenting practices contribute to the satisfaction of psychological needs, boost academic outcomes and well-being, and diminish externalizing tendencies (Deci and Ryan, 2000; Charlot Colomès et al., 2021; Abidin et al., 2022). Parenting characterized by psychological control and coercion is misaligned with adolescents’ core needs, as outlined in self-determination theory (Deci and Ryan, 2000). As a result, unmet psychological needs may drive adolescents to develop problematic patterns of smartphone use (Vossen et al., 2024).

Active mediation involves open, respectful conversations with children about both the benefits and drawbacks of smartphone use. These strategies reflect supportive parenting, encouraging empathy and emotional closeness (Liu et al., 2023). In contrast, strict supervisory approaches may be perceived as harsh, prompting adolescents to resist parental authority. This can strain parent–child dynamics and make constructive communication more difficult (Li and Liu, 2025). Such mediation styles resemble controlling parenting patterns and may obstruct the fulfillment of psychological needs. To date, little research has explored how distinct parental mediation styles affect adolescents’ psychological needs satisfaction. This raises the question of whether media-related parenting practices like mediation influence adolescents’ basic psychological needs fulfillment. Building on prior findings, this study hypothesizes that parental mediation strategies influence adolescents’ fulfillment of psychological needs. Specifically, active mediation is expected to enhance, while parental supervision may suppress, adolescents’ psychological need satisfaction. A key indicator of problematic smartphone behavior is the inadequate satisfaction of psychological needs in real-life contexts. Research shows that failure to meet basic psychological needs offline often leads individuals to seek fulfillment through excessive internet engagement (Chen et al., 2020). For example, social media may fulfill the need for relatedness, online gaming may satisfy the need for competence, while digital content may support the need for autonomy. In the digital era, smartphones, with their multifunctional apps, can readily satisfy users’ core psychological needs. This compensatory mechanism may drive smartphone overuse, potentially developing into problematic use patterns (Gao et al., 2022).

According to the self-determination theory, the satisfaction of basic psychological needs mediates the connection of the social environment and a person’s behavioral characteristics (Deci and Ryan, 2000). Numerous studies have shown that when individuals’ basic psychological needs are met, it not only links to positive outcomes like high well-being (Martela et al., 2022), self-esteem (Gong and Wang, 2023), proactive behavior, and better academic achievement (Liu and Huang, 2021) in supportive environments such as positive parenting and teacher support, but also serves as a buffer in unfavorable environments like high stress and controlling parenting, reducing negative outcomes like psychological distress, depression, anxiety (Peng et al., 2021; Liu et al., 2022), and behavioral problems (Ciydem et al., 2023). However, little research has been done specifically to investigate the mediating role of basic psychological needs in parental mediation and adolescents’ problematic smartphone use.

To summarize, this study proposes that innate basic psychological needs may act as a mediator in the relationship between parental mediation and adolescents’ problematic smartphone use. Therefore, hypothesis 2 was proposed in this study:

Positive outcome expectations (also known as network preference cognition) refer to individuals’ judgments regarding the potential positive outcomes of using the internet (Li et al., 2016). These judgments emerge in the initial stages of internet exposure and are reinforced throughout the process of internet usage, eventually becoming automated. As external stimuli typically need to be mediated through individuals’ cognitive interpretations, the perceived positive aspects of the internet may exert a more significant influence on behavior than the objective aspects of the internet environment (Li et al., 2016). Internet addiction revolves around maladaptive cognition, with positive outcome expectations playing a significant role in its development and maintenance, according to the cognitive-behavioral model of pathological internet use (Davis, 2001). Individuals with high positive outcome expectations seek additional online support, such as addressing their psychological needs and fostering positive interactions through mobile media. They often struggle to resist using social networking sites, leading to a higher likelihood of engaging in social media activities in general and an increased risk of developing addictions (Bhargava and Velasquez, 2021). Empirical researches have demonstrated that positive outcome expectations are a predictor of internet addiction (Jin and Jiang, 2025). However, there is limited empirical research on the relationship between positive outcome expectations and problematic smartphone use. Thus, this study hypothesizes that positive outcome expectations are positively associated with the problematic smartphone use.

Currently, no empirical research has explored the relationship between parental mediation and positive outcome expectations. According to the social cognitive theory (Bandura, 1986), human behaviors result from the interaction between the environment and the individual. Therefore, from the perspective of social cognitive theory (Bandura, 1986), parental mediation and positive outcome expectations, as important environmental and individual factors influencing adolescents’ smartphone use behavior (Fu et al., 2020; Jin and Jiang, 2025), may jointly affect adolescents’ smartphone usage behaviors. Empirical studies have also shown that individual characteristics, as well as environmental factors such as parental and peer influences, play an important role in shaping adolescent addictive behaviors (Gao et al., 2022). Although with age, adolescents’ time spent with peers increases and the role of parents in socialization gradually diminishes, in terms of media use, peer influence and parental influence differ. Peers do not have direct responsibility for the growth and development of their same-age counterparts (Nathanson, 2002). Unlike parental mediation, peers are less likely to engage in critical assessments of media content, and discussions among peers about violent TV programs may actually encourage violent behaviors in adolescents. Peer mediation is less likely to have a positive effect on individual media use (Nathanson, 2002). Gao et al. (2022) also found a significant negative correlation between the parent-adolescent relationship and adolescent problematic smartphone use, while the correlation between peer relationships and problematic smartphone use was not statistically significant. Therefore, parental mediation has a greater impact on adolescents’ media use than peer mediation. Previous studies have found that when adolescents engage in discussions and conversations with their parents about online games, it can alter their positive outcome expectations regarding online gaming (Kapetanovic et al., 2025). This form of parent–child interaction makes adolescents more sensitive to parental feedback and better internalize parental expectations (Liu et al., 2023), which also helps improve adolescents’ critical thinking (Liu et al., 2023), thereby reducing their positive outcome expectations for the internet. Therefore, active mediation may reduce positive outcome expectations in adolescents. Furthermore, individuals in adolescence have a strong sense of autonomy, and when parents adopt supervision strategies for adolescents’ smartphone use behaviors, adolescents are likely to experience conflicts with their parents (Li and Liu, 2025). Adolescents will evaluate conflict events and the real world, forming thoughts such as “Parents do not understand or care about me” and “The real world is really awful.” These thoughts, when coupled with immersion in the online world, are likely to form a strong contrast, leading to cognitive tendencies such as “The real world is inferior to the online world” or “I feel more respected and loved online,” which increases positive outcome expectations (Li and Liu, 2025). Therefore, parental supervision may lead to an increase in positive outcome expectations among adolescents.

Based on the aforementioned analyses, this study proposes that parental mediation may affect problematic smartphone use behaviors by acting as a mediator through positive outcome expectations. Hence, the present study proposes the following research hypothesis 3:

It is important to note that psychological needs that people cannot satisfy in real life may be compensated for by the content provided in cyberspace (Li et al., 2016). Yin and Shen (2023) proposed that individuals might form the belief that the online world is superior to the real world because they initially turn to the internet to fulfill psychological needs that are unmet in real life. Fulfilling our needs through the internet can become a repetitive cycle, potentially leading to internet addiction. Continuously fulfilling individual needs can lead to the development of internet addiction. Having positive expectations about the outcomes related to internet use, even though it’s not adaptive, might lead people to rely more on the internet to fulfill their psychological needs, potentially increasing the risk of internet addiction. Moreover, individuals tend to have higher positive outcome expectations when their basic psychological needs are not met in real life. This implies that unmet basic psychological needs could come before positive outcome expectations, and these two factors may interact to cause internet addiction (Li et al., 2016).

Social cognitive theory (Bandura, 1986) emphasizes the interaction between the environment, individual characteristics and behavior. Parental mediation, as an important environmental variable, has a significant impact on adolescents’ problematic smartphone use (Fu et al., 2020; Li and Liu, 2025). Moreover, basic psychological needs and positive outcome expectations may serve as important individual factors influencing adolescents’ smartphone usage behaviors (Chen et al., 2020; Jin and Jiang, 2025). According to the self-determination theory, the satisfaction of basic psychological needs mediates the connection of the social environment and a person’s behavioral characteristics (Deci and Ryan, 2000). Several studies have revealed that environmental factors can influence both basic psychological needs and positive outcome expectations, which are predictive of problematic smartphone use (Li et al., 2016). Moreover, in reality, the unmet basic psychological needs may precede the formation of positive outcome expectancies (Li et al., 2016). This study, leveraging social cognitive theory (Bandura, 1986) and self-determination theory (Deci and Ryan, 2000), aims to elucidate the impact of parental mediation on adolescents’ problematic smartphone use by examining the mechanisms of basic psychological needs and positive outcome expectations, from the perspective of the interplay between environmental and individual factors influencing behavior.

Based on the aforementioned analyses, this study proposes that basic psychological needs and positive outcome expectations may play a chain mediating role between parental mediation and problematic smartphone use. Thus, hypothesis 4 was proposed in this study:

Figure 1 graphically represents the model to be tested in the study.

A total of three junior high schools from Wuhan, Yichang, and Xiaogan in China were selected using a whole cluster sampling approach. For each school, two classes of students from grades 7–8 were chosen, resulting in a sample size of 2,000 participants. After eliminating invalid samples (e.g., those with consistent responses across all questions, obviously fake answers, or missing answers to key variables), 1,947 valid questionnaires were recovered, yielding an effective recovery rate of 97.35%. The sample included 924 boys (47.46%) and 1,023 girls (52.54%), with ages ranging from 12.56 to 14.88 years (M = 13.72, SD = 1.16).

The study was conducted with the informed consent of school administrators, class teachers, and students. A web-based questionnaire survey was administered with the assistance of class teachers, using computer information technology during class sessions. A qualified individual holding a doctorate or master’s degree in psychology guided the participants throughout the process, providing clear instructions regarding the purpose of the questionnaire, the answering procedures, and emphasizing the voluntary nature of participation. The participants independently completed the survey within a time frame of approximately 20 min. Afterward, the completed questionnaires were collected and organized by the administrator. Ethical approval for the study was obtained from the Ethics Review Committee of Central China Normal University.

Initially, descriptive statistical analysis and Pearson correlation analysis were conducted using SPSS 26.0 to establish a preliminary understanding of the relationships among variables. To assess potential common method bias, a Harman’s single-factor test was performed. To examine the mediating effects of basic psychological needs and positive outcome expectations, 95% confidence intervals for indirect effects were estimated using the Bootstrap method with 5,000 resamples. Further analyses were conducted using the PROCESS macro (Model 6) in SPSS 26.0 to validate the serial mediation effect.

Harman’s single-factor test was conducted in this study to measure common method bias (Podsakoff et al., 2003). The results revealed that there were 14 factors with eigenvalues greater than 1. The first factor accounted for only 14. 23% of the variance, below the critical threshold of 40%. Therefore, it can be concluded that there is no significant issue of common method bias in this study.

This study conducted correlation analyses to examine the relationships among adolescents’ problematic smartphone use, basic psychological needs, positive outcome expectations, and parental mediation (active mediation, and parental supervision) after controlling for age and gender. Table 1 displays the means, standard deviations, and correlation matrices for each variable. The results showed significant positive correlations between active mediation and basic psychological needs (r = 0.38, p < 0.01), and significant negative correlations between active mediation and both positive outcome expectations and problematic smartphone use (r = −0.18, p < 0.01; r = −0.19, p < 0.01, respectively). They also revealed active mediation to be significantly and negatively correlated with parental supervision (r = −0.07, p < 0.01). Parental supervision showed a significant positive correlation with problematic smartphone use (r = 0.17, p < 0.01), and a significant negative correlation with basic psychological needs (r = −0.11, p < 0.01). As for the correlation between parental supervision and positive outcome expectations, it did not show statistical significance (r = 0.04, p > 0.05). Basic psychological needs exhibited a significant negative correlation with both positive outcome expectations and problematic smartphone use (r = −0.36, p < 0.01; r = −0.29, p < 0.01, respectively). Meanwhile, positive outcome expectations showed a significant positive correlation with problematic smartphone use (r = 0.38, p < 0.01).

The mediating effects of basic psychological needs and positive outcome expectations on the different types of parental mediation and adolescents’ problematic smartphone use were analyzed using the SPSS macro PROCESS.

Firstly, this study investigated how active mediation affects adolescents’ problematic smartphone use through the chained mediating role of basic psychological needs and positive outcome expectations. As shown in Table 2 and Figure 2, after controlling for age and gender, active mediation significantly negatively predicted problematic smartphone use and positive outcome expectations (β = −0.07, p < 0.01; β = −0.05, p < 0.05, respectively), and significantly positively predicted basic psychological needs (β = 0.23, p < 0.001). Basic psychological needs significantly negatively predicted problematic smartphone use (β = −0.26, p < 0.001) while positive outcome expectations significantly positively predicted problematic smartphone use (β = 0.31, p < 0.001). Basic psychological needs significantly negatively predicted positive outcome expectations (β = −0.59, p < 0.001). The study found the direct effect of active mediation on problematic smartphone use to be −0.07 (t = −3.20, p < 0.01, LLCI = −0.12, ULCI = −0.03), accounting for 36.84% of the total effect. The total indirect effect of basic psychological needs and positive outcome expectations on active mediation and problematic smartphone use was also noted to be −0.12, accounting for 63.16% of the total effect (detailed results in Table 3). Regarding the mediating effect of basic psychological needs, it was found to be −0.06, accounting for 31.58% of the total effect. Moreover, the bootstrap 95% confidence interval did not include 0, indicating a significant mediating effect of basic psychological needs on active mediation and problematic smartphone use. The indirect effect of positive outcome expectations on active mediation and problematic smartphone use was also found to be −0.02, accounting for 10.53% of the total effect. Moreover, the bootstrap 95% confidence interval did not include 0, indicating a significant mediating effect of positive outcome expectations on active mediation and problematic smartphone use. Meanwhile, the chained mediating effect of basic psychological needs and positive outcome expectations was determined to be −0.04, accounting for 21.05% of the total effect. The bootstrap 95% confidence interval did not include 0, indicating a significant chained mediating effect of basic psychological needs and positive outcome expectations on active mediation and problematic smartphone use.

Finally, the impact of parental supervision on adolescents’ problematic smartphone use was investigated through the chained mediating effect of basic psychological needs and positive outcome expectations. As shown in Table 4 and Figure 3, after controlling for factors such as age and gender, parental supervision significantly positively predicted problematic smartphone use (β = 0.29, p < 0.001) and negatively predicted basic psychological needs (β = −0.13, p < 0.001), but it did not significantly predict positive outcome expectations. Basic psychological needs significantly negatively predicted problematic smartphone use (β = −0.28, p < 0.001) while positive outcome expectations significantly positively predicted problematic smartphone use (β = 0.31, p < 0.001). Basic psychological needs significantly negatively predicted positive outcome expectations (β = −0.62, p < 0.001). Meanwhile, parental supervision showed a direct effect on problematic smartphone use equal to 0.29 (t = 6.71, p < 0.001, LLCI = 0.21, ULCI = 0.38), which accounted for 82.86% of the total effect. Basic psychological needs and positive outcome expectations exhibited a total indirect effect on the impact of parental supervision on problematic smartphone use equal to 0.06, which accounted for 17.14% of the total effect (Table 5). The mediating effect of basic psychological needs was determined to be 0.04, accounting for 11.43% of the total effect. The bootstrap 95% confidence interval did not include 0, indicating a significant mediating effect of basic psychological needs on parental supervision and problematic smartphone use. Meanwhile, the indirect effect of basic psychological needs and positive outcome expectations on the impact of parental supervision on problematic smartphone use was found to be 0.02, accounting for 5.71% of the total effect. The bootstrap 95% confidence interval did not include 0, indicating a significant chained mediating effect of basic psychological needs and positive outcome expectations on the relationship between parental supervision and problematic smartphone use. However, positive outcome expectations did not mediate the relationship between parental supervision and problematic smartphone use.

This study found that active mediation is negatively associated with adolescents’ problematic smartphone use, while parental supervision is positively associated with problematic smartphone use, confirming Hypothesis 1. The results indicated that providing proactive guidance to adolescents notably reduces problematic smartphone use, in accordance with prior empirical evidence (Fu et al., 2020). Active mediation refers to collaborative, open-ended discussions between parents and adolescents regarding media engagement. This dialog-centered approach has been found to foster adolescents’ critical thinking abilities (Liu et al., 2023), enabling them to more effectively navigate and resist the adverse effects of media exposure. Moreover, enhanced parent–child communication often reflects greater overall family functionality. Functionally cohesive families are more likely to prioritize their children’s educational development. Such parents are also inclined to offer enriched educational resources and cultivate a supportive home environment that satisfies adolescents’ core psychological needs. This can, in turn, decrease the risk of problematic smartphone use in adolescents.

Interestingly, the current findings suggest an unexpected positive relationship between parental supervision and adolescents’ problematic smartphone use, which stands in contrast to prior research. Previous studies have indicated that parental supervision can support adolescents in regulating smartphone use, improving time management, and promoting academic engagement, thereby potentially decreasing problematic use (Sun et al., 2022). However, according to psychological reactance theory (Brehm and Brehm, 2013), adolescents with a strong sense of autonomy tend to regard smartphone use as a personal issue. Excessive parental supervision may elicit feelings of psychological intrusion, prompting adolescents to resist, which could manifest as depressive symptoms, diminished self-efficacy, or maladaptive behaviors. Furthermore, during adolescence, individuals tend to become more private and less communicative with parents, driven by increasing desires for independence and self-regulation (Li and Liu, 2025). These developmental tendencies may cumulatively lead to escalated smartphone engagement, potentially culminating in problematic usage patterns. This study underscores the importance of adopting active mediation strategies as a more effective approach for guiding adolescents’ smartphone behaviors.

The study found that basic psychological needs indirectly link parental mediation to problematic smartphone use of adolescents, confirming research on Hypothesis 2. To mitigate problematic smartphone use among adolescents, active mediation that caters to their basic psychological needs can be particularly effective. On the other hand, excessive parental supervision may impede the fulfillment of these needs, ultimately contributing to problematic smartphone use. The basic psychological needs theory (Deci and Ryan, 2000) states that effective parent–child interaction and communication can meet adolescents’ needs for autonomy and interpersonal satisfaction. When an individual’s fundamental psychological needs are effectively fulfilled, they will experience positive development and will be less likely to rely on the internet to satisfy these needs. This, in turn, can help prevent the development of problematic smartphone use. Furthermore, Kardefelt-Winther (2014) proposed a compensating model, suggesting that individuals may engage in excessive online behavior as a means of escaping real-life difficulties or regulating negative emotions. Parental supervision can undermine adolescents’ autonomy and fails to meet their needs for autonomy (Vossen et al., 2024). It also damages relationships between parents and children, neglects adolescents’ need for interpersonal interaction, and creates the perception in adolescents that their parents lack trust in their ability to handle technology, undermining their need for competence. Parental supervision strategies breed mistrust, disregard, and lack of understanding. This can lead adolescents to turn to the internet for guidance and support, which may increase their reliance on electronic devices, like smartphones, potentially leading to problematic smartphone use. Thus, it is evident that active mediation can reduce adolescents’ problematic smartphone use by fulfilling their basic psychological needs, whereas parental supervision may hinder the satisfaction of these needs, thereby increasing their likelihood of problematic smartphone use.

The study found that positive outcome expectations indirectly link active mediation to problematic smartphone use of adolescents, confirming research on H3a. However, this study did not find evidence to support the mediating effect of positive outcome expectations on the relationship between parental supervision and, therefore H3b was not confirmed. This study highlights that parental mediation can effectively mitigate adolescent problematic smartphone use by influencing their positive outcome expectations. In other words, actively involving parents in the use of smartphones can help reduce adolescents’ addiction by altering their beliefs about the positive outcomes of excessive smartphone use. However, positive outcome expectations did not mediate the interaction between parental supervision and adolescents’ problematic smartphone use. This could be because interactions between parents and children affect how adolescents view them. Active mediation, such as engaging in conversations with adolescents about their media use, can enhance their critical thinking skills (Liu et al., 2023). It can also reduce their expectations for positive internet outcomes, which in turn can help reduce problematic smartphone use among adolescents. When parents use supervision strategies, their children may feel like their personal freedom is being threatened. As a result, they might resist their parents’ advice and demonstrate unchanged positive expectations of the internet. When parents utilize supervision strategies, adolescents may not change their perceptions. Instead, these strategies may unintentionally prompt adolescents to engage in the restricted behaviors or to develop greater preferences for them. This phenomenon demonstrates the “forbidden fruit effect,” wherein the more taboo or offensive the content, the stronger the attraction to it. Adolescents might even trick their parents by looking for alternative ways to use the media (West et al., 2023). Therefore, this study found that active mediation can reduce adolescents’ problematic smartphone use by decreasing their positive outcome expectations. However, positive outcome expectations do not mediate the relationship between parental supervision and adolescents’ problematic smartphone use.

According to this study, basic psychological needs and positive outcome expectations of adolescents mediate the relationship between parental mediation and problematic smartphone use, confirming research on Hypothesis 4. Active mediation plays a crucial role in meeting adolescents’ basic psychological needs, thus helping to reduce positive outcome expectations and combat problematic smartphone use. Conversely, parental supervision hinders the satisfaction of basic psychological needs, thereby increasing positive outcome expectations and leading to problematic smartphone use. This result supports social cognitive theory (Bandura, 1986) and self-determination theory (Deci and Ryan, 2000). A possible explanation for this is that parents who engage in active mediation are adept communicators and are able to foster powerful connections with their children. A strong parent–child bond not only supports the basic psychological needs of adolescents, but also encourages them to accept their parents’ parenting style and level of education (Gao et al., 2022). This, in turn, lowers their expectations regarding internet use. When parents supervise their children’s smartphone use, they may feel that their autonomy and relationship needs are being violated, leading to rebellion. Unmet basic psychological needs can lead to individual psychological distress (Gu et al., 2024). This distress may result in heightened expectations for internet use and an increased risk of problematic smartphone use. Ladani et al. (2025) noted that individuals tend to develop addictions to specific social activities they engage in on their smartphones rather than the technology itself. For example, individuals may end up spending more time online than they expect while participating in interactive online activities such as gaming, chatting, and social networking, which increases the risk of developing addiction.

Overall, this study reveals the underlying psychological mechanisms through which parental mediation styles influence adolescents’ problematic smartphone use: parental mediation affects adolescents’ problematic smartphone use through the chain-mediating roles of basic psychological needs and positive outcome expectations. These findings confirm the mechanisms by which parental mediation impacts individual psychology and enrich research in the field of cyberpsychology. On one hand, it suggests that parents should adopt active mediation strategies to guide adolescents’ smartphone use. On the other hand, it emphasizes the importance of parents paying attention to adolescents’ smartphone use to minimize the potential harm of problematic smartphone use on their academic performance and mental health.