Abstract
(1) Background: With the continuous expansion of graduate education, the mental health of postgraduates has become a growing concern for both academia and society. Understanding how family and institutional resources influence psychological outcomes is critical for developing effective support strategies; (2) Methods: A cross-sectional survey was conducted among 3998 postgraduate students across China, including 3393 master’s students (51.78% female, M = 24.21, SD = 1.521) and 605 doctoral students (37.19% female, M = 27.77, SD = 2.841). Multi-group structural equation modeling was employed to examine how family functioning and supervisor–postgraduate relationships influenced mental health, research self-efficacy, and suicidal tendencies; (3) Results: The findings showed that although most structural relationships were consistent across groups, two critical pathways were nonsignificant at the doctoral stage, providing evidence of partial structural invariance; (4) Conclusions: The study suggests that while family and school support generally play a protective role, their influence varies across educational stages. Tailoring psychological interventions to the distinct needs of master’s and doctoral students is essential, offering both theoretical insights into the dual role of contextual resources and practical guidance for targeted mental health support in graduate education.
1. Introduction
1.1. Background
With the rapid global expansion of higher education, postgraduates have become a vital force driving knowledge production and innovation. However, as universities raise academic standards and impose publication requirements, academic research pressures have intensified. This has resulted in widespread psychological distress among postgraduates, with the prevalence of depression and anxiety reported to be six times higher than that of the general population (Evans et al., 2017). More concerning are the increasingly frequent cases of doctoral students who die by suicide globally, which not only result in irreversible talent loss but also expose systematic shortcomings in mental health support within the graduate education system (Guidotti et al., 2024; Meda et al., 2021).
Although numerous studies have examined anxiety and depression among postgraduates, prevalence rates vary widely, from 9.2% to 86.0%, due to methodological differences and variations in symptom presentation (P. Wang et al., 2018; Garcia-Williams et al., 2014). These inconsistencies emphasize the need to understand the contextual factors shaping postgraduates’ mental health, particularly their family and institutional environments.
1.2. Theoretical Support
1.2.1. Life Course Perspective and the “Thick-Skinned Bias”
According to life course theory, doctoral students are in a period of “emerging adulthood,” facing multiple social expectations related to career, family, and financial independence. These overlapping pressures shape how they perceive and respond to stress. The prevailing societal notion of a “thick-skinned bias”, the assumption that individuals develop greater resilience through academic progression, remains unverified. In fact, empirical research shows that repeated stress exposure often increases vulnerability rather than resilience (Haim-Nachum et al., 2022; Layne et al., 2008). Levecque et al. (2017) found that 32% of doctoral students were at risk of common mental disorders, driven primarily by workload, low job control, and work–family conflict. Similarly, Thomas Tobin et al. (2021) and Miller et al. (2019) demonstrated that disadvantaged groups accumulate greater stress and fewer coping resources, contradicting adaptation-level theory (Helson, 1964). In China, traditional cultural values emphasizing filial duty and social success intensify these burdens. The advisor-responsibility system further amplifies supervisory pressure, making the quality of the supervisor–postgraduate relationship a decisive factor in mental health outcomes.
1.2.2. Social Support as Buffer and Burden
Social support theory (Cohen & Wills, 1985) proposes that emotional, informational, and practical support from significant others can buffer stress, especially under high-pressure conditions. However, support is not uniformly beneficial, and it may also function as a burden by heightening expectations or role conflict (Dolson & Deemer, 2022; Levecque et al., 2017). Experimental evidence shows that even brief social-belonging interventions can significantly improve academic performance and well-being (Walton & Cohen, 2011). These findings underscore the importance of precisely targeted support systems. Yet, many studies treat postgraduates as a homogeneous group, neglecting developmental distinctions. Arnett (2000) noted that individuals in emerging adulthood, typical of master’s students, focus on exploration, whereas doctoral students emphasize stability and social roles. Failing to account for these differences may obscure crucial variations in coping mechanisms and mental health outcomes.
1.2.3. Research Gaps and Study Objectives
Previous research often isolates either family function or supervisory relationships, rarely examining their joint effects (DeWit et al., 2016; Aass et al., 2022). Furthermore, few studies explore the dual nature of these supports as both protective and pressuring forces. In China’s collectivist and hierarchical educational culture, this issue becomes even more salient, as family expectations and mentor authority intersect to shape students’ psychological adaptation. To address these gaps, this study constructs a multi-group structural equation model (SEM) integrating family function and the supervisor–postgraduate relationship as parallel sources of support. By comparing master’s and doctoral students, we aim to clarify (1) how home and school environments influence mental health, self-efficacy in research, and suicidal ideation, and (2) whether these pathways differ across educational stages. This approach enriches existing models by revealing the complex balance between support and strain in postgraduate education.
1.3. Research Hypotheses
As graduate education expands, postgraduates (especially doctoral candidates) face unprecedented psychological and academic challenges (Evans et al., 2017; Levecque et al., 2017). Family and institutional support systems have thus become key determinants of mental health and research adaptation. Based on prior theories and evidence, we propose the following hypotheses.
1.3.1. The Relationship Between Home and School Environment and Mental Health
Ample evidence demonstrates that the home and school environment significantly shapes postgraduates’ mental health and adaptation. Family function reduces anxiety and enhances well-being (Chen et al., 2023), while positive supervisor–postgraduate relationships foster belonging and academic engagement (Rose, 2005). Mentor support also predicts higher research self-efficacy and motivation (Lev et al., 2010). However, the mediating role of research pressure remains contested: some studies suggest it directly triggers emotional problems, whereas others highlight indirect cognitive or motivational pathways (C. Liu et al., 2019; Farsani & Ghorbani, 2024).
At higher academic stages, suicidal ideation mechanisms are particularly complex. While psychological distress is a direct predictor (Levecque et al., 2017), whether home–school environments mitigate such risks through a chain mediation process remains unclear. According to social support theory, emotional, informational, and instrumental support from family members and mentors, buffers stress and promotes well-being (Cohen & Wills, 1985). For postgraduates, family function entails emotional connectedness, communication, and adaptability, whereas the supervisor–postgraduate relationship embodies trust, guidance, and empathy. Empirical studies show that supportive family and school dynamics enhance emotional stability and belonging, fostering resilience during research stress (Walton & Cohen, 2011). Effective communication and joint decision-making within families reduce anxiety and promote well-being (Barzoki & Toikko, 2025; Berryhill & Smith, 2021; Xu et al., 2021). Conversely, strained family ties, excessive expectations, or communication breakdowns heighten risks of depression and suicidal ideation (Q. Yang et al., 2022). In Chinese culture, where filial responsibility and family honor are emphasized, these pressures may intensify internalized stress (J. Zhang & Goodson, 2011).
Similarly, the supervisor–postgraduate relationship exerts a profound influence on mental health. Supportive mentorship enhances confidence and identity (Rose, 2005), and in Chinese samples, closer supervisor–postgraduate relationships correlate with lower anxiety (Le et al., 2021). However, when supervision becomes distant, controlling, or instrumental, it can induce oppression and even “academic trauma” (Brown et al., 2020). High parental or supervisory expectations without emotional understanding may also trigger role conflict, loneliness, and self-doubt (Wentzel et al., 2016).
1.3.2. The Influence of Home and School Environment on Self-Efficacy in Research
Self-efficacy in research, defined as confidence in one’s ability to conduct research tasks (Bandura, 1997), is a critical mediating variable in academic adaptation. Families with higher educational literacy and emotional support foster stronger research motivation (Eccles & Wigfield, 2002), while supportive mentorship enhances persistence and confidence (Paglis et al., 2006). In contrast, students from economically disadvantaged or culturally under-resourced families may experience “hidden stress” and “resource mismatch,” leading to low confidence and unclear career paths (Chang et al., 2020). Low-quality supervision characterized by poor feedback and limited communication undermines self-efficacy and increases burnout risk (Stubb et al., 2011). Under the influence of Chinese “familial self-continuity” culture, postgraduates often face dual expectations, meeting family aspirations while pursuing academic excellence, which can transform supportive relationships into stressors. This study thus hypothesizes that self-efficacy mediates the relationship between the home and school environment and mental health and suicidal ideation, with differential mechanisms across educational stages.
2. Methodology
2.1. Participants
This study employed a cross-sectional design and collected data from 3998 postgraduates from universities in China. Among them, 3393 were master’s students (Mage = 24.21, SD = 1.52) and 605 were doctoral students (Mage = 27.77, SD = 2.84).
2.2. Measures
2.2.1. Home and School Environment
Family function was assessed using the General Family Function Scale developed by Zou et al. (2010), which has demonstrated good reliability and validity. The scale consists of six items rated on a 5-point Likert scale (1 = “strongly disagree” to 5 = “strongly agree”), with total scores ranging from 6 to 30. Higher scores indicate better overall family function. The internal consistency was high (Cronbach’s α = 0.947) and the content validity index was 0.889.
The quality of the supervisor–postgraduate relationship was measured using the Leader–Member Exchange (LMX) scale by Graen and Uhl-Bien (1995), revised for graduate supervisor–postgraduate relationships by Yu Xiaomin and colleagues. This scale includes seven items rated on a 5-point Likert scale, where higher scores represent better perceived relationship quality. An example item is, “I trust my advisor and support all of their research-related plans and decisions.” The scale is reliable (Cronbach’s α = 0.835) and content validity index was 0.969.
2.2.2. Academic Research Pressure
Academic research pressure was measured using a three-item unidimensional scale developed by F. Zhou (2009), assessing individuals’ cognitive and emotional reactions to academic tasks (e.g., “I feel anxious about how to complete research tasks”). Responses are rated on a 6-point Likert scale (1 = “strongly disagree” to 6 = “strongly agree”), with higher scores indicating greater perceived academic research pressure (Cronbach’s α = 0.894) and the content validity index was 0.717.
2.2.3. Mental Health
Mental health was assessed using the Symptom Checklist-90 (SCL-90) developed by Z. Y. Wang (1984), which contains 90 items and 10 subscales, including somatization, obsessive–compulsive symptoms, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoia, and psychoticism, as well as other factors such as sleep and diet. Respondents rated their experiences over the past week on a 5-point scale (1 = “not at all” to 5 = “extremely”). Higher subscale scores indicate more severe symptoms. Symptom levels are categorized as moderate (within ±1 SD), elevated (±2 SD), or high/low (beyond ±2 SD). The scale’s internal consistency was excellent (Cronbach’s α = 0.981), and the content validity index was 0.988.
2.2.4. Self-Efficacy in Research
Self-efficacy in research was measured using a scale developed by Y. J. Zhang et al. (2013), which includes three items, such as “I am confident in my ability to conduct research” and “I am capable of handling difficulties in research.” The total score ranges from 3 to 15, with higher scores reflecting greater self-efficacy. The scale’s reliability was Cronbach’s α = 0.953 and the content validity index was 0.858.
2.2.5. Suicidal Ideation and Behavior
Suicidal ideation and behavior were assessed using the Suicide Behavior Screening Questionnaire (SBSQ) developed by L. Yang et al. (2021), which consists of eight items. Items 1–2 screen for suicidal thoughts, 3–5 for past attempts, and 6–8 for actual attempts. The scale uses an 8-point Likert format, with higher scores indicating greater suicide risk. Participants were categorized as (1) those with ideation but no attempts, (2) those with past attempts and ideation, or (3) those with actual attempts and ideation. The scale demonstrated acceptable reliability (Cronbach’s α = 0.839), and the content validity index was 0.774.
2.3. Data Analysis
Since some variables (e.g., suicidal tendency) were not normally distributed, we used Maximum Likelihood Estimation with robust standard errors (MLR) in SEM to accommodate non-normality, which does not require strict normality assumptions (Falk, 2018).
Data were analyzed using SPSS 27.0 and Amos 28.0. Structural Equation Modeling (SEM) with Maximum Likelihood Estimation was employed to test the hypothesized model, including home and school environment (family function and supervisor–postgraduate relationship), academic research pressure, SCL-90, self-efficacy in research, and suicidal tendency. Multi-group analysis was used to compare model differences between master’s and doctoral students. Model fit was evaluated using CFI (>0.90), RMSEA (<0.08), and SRMR (<0.06) criteria (Kline, 2015). Mediation effects were tested using 5000 bootstrap samples and 95% bias-corrected confidence intervals; mediation was deemed significant if the interval excluded zero (Preacher & Hayes, 2004). Measurement invariance across groups was assessed using ΔCFI < 0.01 and ΔRMSEA < 0.015, followed by partial constraint release to explore group differences. Gender and discipline were included as covariates, and missing data were handled using full information maximum likelihood estimation (Acock, 2005).
2.4. Common Method Bias and Correlational Analysis
Harman’s single-factor test was conducted to examine common method variance. Twenty-four factors had eigenvalues greater than 1. The first factor accounted for 25.30% of the variance, which is well below the 40% threshold, indicating that common method bias was not a significant concern (H. Zhou & Long, 2004).
3. Results
3.1. Descriptive Statistics and Group Differences
3.1.1. Descriptive Statistics
To better understand the distribution patterns and potential differences in key variables across educational levels (master’s and doctoral students), we conducted descriptive statistical analyses and independent sample t-tests. Results are presented in Table 1.
Table 1.
Descriptive statistics and difference tests for various variables between master’s students and doctoral students.
The average age of master’s students was 24.21, while doctoral students had a significantly higher mean age of 27.77 (t = −38.21, p < 0.001), with a large effect size (Cohen’s d = 1.62). This substantial age gap suggests that developmental differences between the two groups should not be overlooked, thereby supporting the use of multi-group analyses in subsequent modeling. In terms of parental education background, the two groups displayed relatively similar distributions. However, doctoral students had a higher proportion of parents with a bachelor’s degree or above. Notably, 13.4% of doctoral students reported having a father with a graduate-level education, compared to only 8.4% among master’s students. This difference may reflect a greater accumulation of cultural capital in the families of doctoral students and implies the potential for intergenerational transmission of educational advantages.
Regarding self-reported family economic status, the majority of participants across both groups rated their family background as “moderate.” A slightly higher proportion of doctoral students reported “good” or “affluent” financial conditions, though the overall difference in economic background between the two groups was not statistically significant.
3.1.2. Educational Stage Differences
Doctoral students scored significantly higher than master’s students on the quality of the supervisor–postgraduate relationship (t = −4.03, p < 0.001), with a small effect size (Cohen’s d = 0.18). While the effect is modest, it suggests that doctoral students may experience slightly more positive interactions with their advisors, potentially due to more frequent research collaboration. Doctoral students also reported significantly greater research pressure than master’s students (t = −2.86, p = 0.004, Cohen’s d = 0.13). This finding indicates that despite closer mentorship, doctoral students experience heightened academic research pressure. In terms of mental health as measured by the SCL-90, no significant difference was found between the two groups (p = 0.289), suggesting a similar level of overall psychological symptom burden across educational levels. However, doctoral students exhibited significantly higher scores on suicidal tendency compared to master’s students (t = −3.00, p = 0.003, Cohen’s d = 0.13). Although the effect size is small, the result is concerning and highlights an elevated risk of self-harm among doctoral students. Lastly, doctoral students showed significantly higher self-efficacy in research than master’s students (t = −5.85, p < 0.001, Cohen’s d = 0.26). This indicates greater confidence among doctoral students in their ability to manage research tasks, suggesting that educational level not only shapes stress experiences but may also moderate one’s perceived research competence.
3.2. Measurement Invariance
Although the chi-square test results were significant, the structural equation model (SEM) results (Figure 1) indicated that the hypothetical model had a relatively high degree of fit (χ2 = 44.071, df = 5, p < 0.001, χ2/df = 8.814, CFI = 0.992, RMSEA = 0.044). According to Kline (2015), model fit can be considered acceptable. The study provided partial evidence of structural invariance by testing the invariance of structural paths across educational stages (as shown in Table 2). Specifically, most of the equality constraints (a1, a2, a3, a6, a7 and a8) did not produce significant changes in model fitting (Δχ2/df ≤ 2; ΔNFI, ΔIFI, ΔTLI ≤ 0.01), indicating that these paths are statistically equivalent between the two groups. However, for these two paths, the invariance assumption is not supported. When the constraint a4 = b4 is applied, the chi-square difference is significant (Δχ2/df = 313.063, p < 0.001), and the change in the incremental fitting index also exceeds the recommended threshold, indicating that there are obvious structural differences between master’s and doctoral students on this path. In contrast, the equality constraint of a5 = b5 also produced statistically significant chi-square differences (Δχ2/df = 8.261, p = 0.004), but the corresponding changes in the fitting index were insignificant (ΔCFI = 0.002). The structural model is basically stable among different groups, but some key approaches may vary depending on whether the respondents hold a master’s or doctoral degree.
Figure 1.
Path model diagram of structural equations at the master’s and doctoral stages. Note. The above figure shows the hypothetical path relationships among the various variables. Among them, paths a1 to a8 represent the master model, and paths b1 to b8 represent the doctoral model. The value represents the standardized path coefficient.
Table 2.
The model structure path invariance varies at different educational stages.
3.3. Multi-Group Path Analysis
For the master’s stage, all the hypothetical structural paths were statistically significant, supporting the proposed model. In contrast, in the doctoral stage, neither of the two pathways, (a) the influence of home and school environment on suicidal tendency (β = 0.008, n.s.) and (b) the influence of mental health on self-efficacy in research (β = −0.241, n.s.), reached significance. This indicates that among doctoral students, the home and school environment have no direct impact on suicidal tendencies, and mental health has no significant influence on the study of self-efficacy in research. The comparison of nested models (Figure 2) further confirmed these differences. When equal constraints were imposed on the above two paths, the model fitting deteriorated significantly (home and school environment→suicidal tendency, Δχ2 = 313.063, p < 0.001; home and school environment→mental health, Δχ2 = 8.261, p = 0.004). For the remaining seven paths, the constraint equality between groups did not significantly reduce the model fitting (Δχ2/df < 2, ΔCFI < 0.01), indicating invariance. Beyond path significance, the squared multiple correlations (R2) further demonstrated the model’s explanatory power. For master’s students, the model accounted for R2 = 0.281 of the variance in mental health, R2 = 0.519 in research self-efficacy, and R2 = 0.094 in suicidal tendency, suggesting substantial predictive strength. Among doctoral students, the corresponding values were R2 = 0.361, R2 = 0.514, and R2 = 0.081, respectively, indicating a moderate level of explanatory power and reduced predictive efficiency at the doctoral stage. Although R2 values were generally higher for master’s students, reflecting stronger mediation through self-efficacy, the model was selected primarily based on theoretical assumptions rather than empirical optimization.
Figure 2.
Results of the partially constrained models. Note. ** p < 0.01, *** p < 0.001; β is in parentheses for the doctoral students, while it is outside parentheses for the master; The dotted line indicates that the path coefficient at the doctoral stage is not significant; The red lines indicate that the structural coefficients of different educational stage groups are significantly different.
These results provide evidence of partial structural invariance across educational stages. Although most structural mechanisms are shared between master’s and doctoral students, doctoral students show weaker or less significant associations in how the situational environment affects suicidal tendency and how mental health promotes self-efficacy in research. The differences among these specific groups suggest that as postgraduates progress academically, the determinants of mental health and efficacy may vary.
4. Discussion
Drawing on data from 3998 master’s and doctoral students, this study used multi-group structural equation modeling to examine how family function and supervisor–postgraduate relationships influence mental health, research self-efficacy, and suicidal ideation. The findings revealed clear stage-specific psychological mechanisms. Master’s students primarily benefited from a “positive incentive pathway”, in which family and mentor support enhanced self-efficacy and promoted psychological adaptation. Doctoral students, in contrast, followed a “risk accumulation pathway”, whereby family function indirectly contributed to suicidal ideation through increased academic research pressure and psychological symptoms. These patterns indicate that family–school support operates differently across educational stages and may reflect implicit biases in how psychological support is distributed.
4.1. Differential Impacts of Home and School Environment on Mental Health
Family and school environments significantly predicted psychological symptoms in both groups, supporting the stress-buffering hypothesis (Cohen & Wills, 1985) and prior findings in Chinese medical students (Shao et al., 2020). However, the underlying mechanisms varied. Master’s students, still in a transitional developmental stage, mainly relied on motivational support that strengthened self-efficacy and emotional well-being. Doctoral students faced heavier academic and social demands, including publication pressure, financial responsibilities, and familial expectations. For them, family and mentor support primarily reduced academic research pressure and buffered psychological risk. Supervisor–postgraduate relationships showed a dual nature: although doctoral students reported slightly better mentor quality, they also experienced higher stress and suicidal ideation, suggesting that hierarchical mentorship may transform support into stress. These findings align with Arnett’s (2000) stage-specific developmental model and Levecque et al.’s (2017) evidence linking doctoral workload to mental health risks.
4.2. Differences in the Chain of Psychological Mechanisms Shaped by Developmental Tasks
The findings indicate that postgraduates display distinct psychological mechanisms across developmental stages. For master’s students, a “positive incentive chain” was observed, in which family function enhanced research self-efficacy, promoting psychological adaptation and positive emotions (Li et al., 2025). At this transitional stage from student to professional, individuals are highly responsive to external support, and family and mentor resources readily translate into motivation and self-identity. Their larger cohort size and relatively diffuse social expectations further help distribute stress, facilitating positive reinforcement processes. In contrast, doctoral students tended to follow a “risk accumulation chain,” where family function indirectly affected suicidal tendency through academic research pressure and psychological symptoms (Bergvall et al., 2025). Multiple role conflicts, balancing research productivity with responsibilities related to marriage, finances, and social expectations, intensify the negative effects of stress and increase vulnerability to psychological symptoms. The supervisor–postgraduate relationship also plays a dual role: supportive mentorship alleviates pressure, whereas authoritarian supervision may heighten anxiety and role conflict (Mavrogalou-Foti et al., 2024; Li et al., 2025). Accordingly, mental health interventions should be tailored by stage, fostering self-efficacy and motivation among master’s students, and mitigating stress accumulation and role conflict among doctoral students.
4.3. “Responsibility Source” Role of Family–School Resources Under the Thick-Skin Bias
The “thick-skinned bias” may inadvertently exacerbate inequalities in resource allocation and amplify doctoral students’ stress. This bias creates a “Matthew effect,” where those perceived as resilient or high achieving receive more opportunities and support, while students facing silent struggles are systematically overlooked. Although doctoral students report stronger supervisor–postgraduate relationships than master’s students, they also experience higher stress, psychological symptoms, and suicidal tendencies, suggesting that perceived resilience masks underlying vulnerability (S. Liu et al., 2024). The bias may also suppress help-seeking behaviors, as students internalize social expectations to appear self-sufficient and avoid disclosing distress, rendering their struggles invisible to mentors and family members. Consequently, those lacking strong family support face a double disadvantage, fewer institutional resources and unrecognized psychological needs (Yuan et al., 2025). The nonsignificant direct pathway from home and school environments to suicidal ideation among doctoral students may reflect this disengagement from help-seeking. Consistent with cumulative advantage theory, students with early support maintain well-being, whereas those without it face escalating disadvantages. These findings underscore the developmental divergence between the two groups: while master’s students benefit primarily from motivational and emotional reinforcement, doctoral students require protective mechanisms that buffer cumulative and chronic stressors. Understanding these differentiated pathways provides a foundation for designing stage-specific psychological interventions and preventive strategies within graduate education.
4.4. Implications for Psychological Support and Policy Development
The findings of this study provide valuable insights for improving psychological support systems in graduate education. The stage-specific mechanisms identified suggest that mental health strategies should be differentiated between master’s and doctoral students. For master’s students, interventions should emphasize enhancing research self-efficacy, motivation, and emotional adjustment through constructive mentoring and supportive family engagement (Miao et al., 2025). For doctoral students, greater attention should be given to alleviating long-term academic research pressure, role conflicts, and potential emotional exhaustion through regular mental health assessments, supervisor communication training, and institutional monitoring mechanisms (Ueno et al., 2025). At a broader level, universities should strengthen cross-departmental collaboration among counselors, academic mentors, and administrative units to build a more inclusive mental health environment. Establishing preventive mechanisms and responsive support networks can help reduce hidden psychological risks and foster a culture of well-being throughout postgraduate education.
4.5. Research Limitations and Future Directions
The findings carry important clinical and practical implications for postgraduate mental health services. The clear distinction between the psychological mechanisms of master’s and doctoral students suggests that mental health interventions should be stage-specific and evidence-based. For master’s students, interventions should focus on strengthening research self-efficacy, emotional regulation, and adaptive motivation, as these protective factors form the core of the “positive incentive pathway.” Structured mentoring, skill-based workshops, and family involvement programs may enhance their sense of academic competence and belonging. For doctoral students, the prominence of the “risk accumulation pathway” highlights the need for preventive and therapeutic approaches targeting chronic stress, depressive symptoms, and suicidal ideation. Universities should integrate early identification and continuous monitoring systems, including regular mental health screening and counseling, into doctoral programs. Training supervisors in psychological literacy and empathetic communication can also mitigate stress stemming from hierarchical mentoring relationships. Furthermore, cross-disciplinary collaboration between psychologists, educators, and medical professionals is essential to establish a comprehensive mental health framework that provides both psychosocial and clinical support. By aligning institutional practices with clinical insights, universities can reduce the incidence of severe psychological outcomes and promote sustainable academic well-being.
5. Conclusions
The present study deepens understanding of how family–school support shapes the academic and psychological well-being of postgraduates. Using multi-group SEM, we found that the overall structural model remained stable across educational stages, yet two key mechanisms diverged. For master’s students, family and supervisor support enhanced research self-efficacy and indirectly improved mental health, forming a positive incentive pathway driven by motivation and emotional reinforcement. For doctoral students, however, the protective effects of contextual resources weakened: family and supervisor support no longer directly reduced suicidal tendency, and mental health showed a limited influence on self-efficacy. This pattern reflects a risk accumulation pathway, in which chronic academic pressure and role conflicts gradually erode the buffering function of support. In summary, master’s students benefit primarily from motivational and resource-based protection, whereas doctoral students are more vulnerable to stress accumulation and reduced psychological resilience. These findings highlight the need for stage-specific mental health interventions, enhancing self-efficacy and positive feedback for master’s students and reducing sustained stress and emotional exhaustion for doctoral students, to promote balanced and sustainable well-being in graduate education.
Author Contributions
Y.Z.: Conceptualization, Methodology, Software, Validation, Formal Analysis, Investigation, Data Curation, Writing—Original Draft Preparation, Writing—Review and Editing, Visualization. J.H.: Methodology, Software, Validation, Formal Analysis; C.L.: Conceptualization, Methodology, Software, Validation, Formal Analysis, Investigation; C.Z.: Methodology, Software, Data Curation; J.S.: Methodology, Software, Investigation; L.L.: Methodology, Writing—Original Draft Preparation, Writing—Review and Editing, Supervision. All authors have read and agreed to the published version of the manuscript.
Funding
This research was funded by grants from the Graduate Education and Teaching Reform Research Project of China University of Geosciences (Wuhan) (Grant No. YJG2024210) and Hubei Provincial Undergraduate Education and Teaching Reform Research Project (Grant No. 2024151).
Institutional Review Board Statement
This study was conducted in accordance with the Declaration of Helsinki. Approval to conduct the study was obtained from the Ethics Committee, Department of Psychology, China University of Geosciences (protocol code cug-ecdp-24-10-01, approve date 24 October 2024).
Informed Consent Statement
Informed consent was obtained from all adult participants included in the study.
Data Availability Statement
The datasets presented in this article are not readily available because it used to support the findings of this study which are restricted by the the Ethics Committee, Department of Psychology, China University of Geosciences. In order to protect participant privacy, the data are prohibited from being made public. Requests to access the datasets should be directed to lilin@cug.edu.cn.
Acknowledgments
The authors would like to sincerely thank all participants who took part in this study.
Conflicts of Interest
The authors declare no conflicts of interest.
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