Trajectories of peer victimization among left-behind children in rural China: The role of positive school climate.

Left-behind children are likely to experience peer victimization, which can have detrimental consequences in their developmental outcomes. Yet, limited longitudinal research have examined peer victimization trajectories over time or the factors associated with left-behind children in China. The purpose of the present study was to examine what, if any, distinct trajectories of peer victimization exist among left-behind children and whether these trajectories are related to school climate, left-behind status, and their interactions. Participants were 853 Chinese left-behind children (Mage = 14.25, SD = 2.39; 43.4% girls) who participated in a four-wave longitudinal study conducted in rural China. Participants reported school climate (indexed by safety and order, acceptance and support, equality and fairness, autonomy and cooperation) at T1 and peer victimization across T1 to T4 spanning 2 years. Latent class growth analyses identified four peer victimization trajectories, including a stably low-decreasing group, a moderate-decreasing group, a high-decreasing group, and an increasing group. Multinomial logistic regression analyses revealed that children who perceived more positive school climate were more likely to exhibit a stably low-decreasing trajectory compared to the other three groups. In addition, among left-behind children who perceived more positive school climate, children with single-parent migrating were more likely to be members of the stably low-decreasing group as compared to those with both-parent migrating. Peer victimization among left-behind children is a concern especially for those who were left behind by both parents and perceived less positive school climate. Targeted school-based interventions and services focused on reducing peer victimization and improving school climate are needed for left-behind children, especially those with both-parent migrating.

Community assembly of ectomycorrhizal fungal communities in pure and mixed Pinus massoniana forests.

Ectomycorrhizal (EcM) fungi play an important role in nutrient cycling and community ecological dynamics and are widely acknowledged as important components of forest ecosystems. However, little information is available regarding EcM fungal community structure or the possible relationship between EcM fungi, soil properties, and forestry activities in Pinus massoniana forests. In this study, we evaluated soil properties, extracellular enzyme activities, and fungal diversity and community composition in root and soil samples from pure Pinus massoniana natural forests, pure P. massoniana plantations, and P. massoniana and Liquidambar gracilipes mixed forests. The mixed forest showed the highest EcM fungal diversity in both root and bulk soil samples. Community composition and co-occurrence network structures differed significantly between forest types. Variation in the EcM fungal community was significantly correlated with the activities of ß-glucuronidase and ß-1,4-N-acetylglucosaminidase, whereas non-EcM fungal community characteristics were significantly correlated with ß-1,4-glucosidase and ß-glucuronidase activities. Furthermore, stochastic processes predominantly drove the assembly of both EcM and non-EcM fungal communities, while deterministic processes exerted greater influence on soil fungal communities in mixed forests compared to pure forests. Our findings may inform a deeper understanding of how the assembly processes and environmental roles of subterranean fungal communities differ between mixed and pure plantations and may provide insights for how to promote forest sustainability in subtropical areas.

Associations Between Multiple Dimensions of Sleep and Mood During Early Adolescence: A Longitudinal Daily Diary Study.

Prior research has observed reciprocal associations between sleep and mood. However, these findings are primarily based on the examination of one or two aspects of sleep behaviors (e.g., duration, quality), neglecting how multiple dimensions of sleep (particularly indicators pertinent to adolescence, e.g., sleep variability) are linked to adolescent mood both daily and longitudinally. Drawing on a multidimensional framework for sleep, this study addressed the knowledge gap by examining the directionality of and differential effects for associations between multiple dimensions of sleep and mood during early adolescence. Participants were 273 Chinese early adolescents (34.39% girls; Mage = 11.57, SD = 1.31), who filled out a pre-survey on demographics (T1) and 7-day diaries on sleep (i.e., duration, quality, disturbance, and latency) and mood (i.e., positive and negative mood). Adolescents completed another wave of diary reports 1 year later (T2). Findings revealed both bidirectional and unidirectional, within-person effects depending on specific sleep parameters, suggesting differential associations between multiple dimensions of sleep and mood. Specifically, on days when adolescents had longer sleep latency and greater disturbance than usual, they reported higher negative mood the next day, whereas higher negative mood was linked to poorer sleep quality the next day. The longitudinal investigation found that greater variability in sleep quality at T1 was associated with higher negative mood at T2. These findings underscore the importance of understanding the complex interplay between sleep and mood by examining the directionality of and differential effects for the daily and longer-term associations between multiple dimensions of sleep and mood among early adolescents.

Longitudinal Trajectories of Social Mobility Beliefs among Chinese Adolescents: The Protective Roles of Parental Academic Involvement and Adolescent Future Orientation.

Social mobility beliefs play a significant role in shaping adolescents' adaptive developmental outcomes, including well-being and academic functioning. Nevertheless, existing research may not cast light on the distinct trajectories and potential protective factors of social mobility beliefs. The present study aims to identify heterogeneity in trajectory patterns of social mobility beliefs among Chinese adolescents (Mage = 12.45, SDage = 2.60; 55.1% boys; 40.0% rural adolescents) in a four-wave (i.e., fall 2017, fall 2018, spring 2019, and fall 2019) longitudinal design, and examines the protective roles of parental academic involvement and adolescent future orientation. Three distinct trajectories of social mobility beliefs were identified: high-increasing (35.1%; a positive trajectory with the best developmental outcomes, including the lowest problem behaviors and depression symptoms, and the highest life satisfaction and academic competence), moderate-stable (49.8%), and low-decreasing (15.1%; a negative trajectory with the worst developmental outcomes, including the highest problem behaviors and depression symptoms, and the lowest life satisfaction and academic competence). Apart from the main effects of parental academic involvement and future orientation, a significant interaction effect of these two protective factors and adolescent group was detected, and only rural adolescents who reported both high levels of parental academic involvement and future orientation have a greater chance of being placed in the high-increasing trajectory than the low-decreasing trajectory. These findings highlight the significance of clarifying individual differences in the dynamic process of social mobility beliefs during adolescence, and elucidate rural-urban disparities in the influences of protective factors on social mobility beliefs trajectories, and inform individualized intervention strategies.

The Diagnosis of Gastric Cancer due to a Parathyroid Adenoma Almost Missed in a Hypercalcemia Patient with Severe Vomiting.

BACKGROUND: Hypercalcemia is a relatively common clinical problem. However, the differential diagnosis between hypercalcemia combined with hyperparathyroidism and a malignant tumor is difficult. METHODS: Appropriate laboratory tests, ultrasound and static imaging of the parathyroid, electronic gastroscopy, and histological examinations were used. RESULTS: The patient was found to have primary hyperparathyroidism due to hypercalcemia, with a parathyroid adenoma visible on color Doppler ultrasound and PET. The hypercalcemia was corrected after surgical resection. As the symptoms of nausea and vomiting did not improve, further investigations were undertaken, and gastric cancer was found on gastroscopy. CONCLUSIONS: Both primary hyperparathyroidism and gastric tumors may present with symptoms of nausea and vomiting. Clinically, multiple disease possibilities should be considered to explain a particular symptom.

Dimensions of child maltreatment and longitudinal diurnal cortisol patterns: The roles of resilience and child sex.

Informed by the dimensional approach to adversity, this study disaggregated child maltreatment effects to examine how abuse versus neglect influenced cortisol at the baseline assessment and longitudinal changes in diurnal cortisol among a sample of Chinese children and adolescents (N = 312; aged 9-13 years; M age = 10.80, SD = 0.84; 67% boys). The moderating roles of resilience and sex differences in these associations were also explored. Results revealed distinct effects of abuse versus neglect on diurnal cortisol in girls, but not boys, which varied by the time scale of assessment and type of cortisol measure. Specifically, abuse was associated with girls' longitudinal changes in awakening cortisol, cortisol awakening response, and diurnal cortisol slope over one year, whereas neglect was associated with girls' awakening cortisol and cortisol awakening response at the baseline assessment. Further, resilience moderated the effects of abuse on girls' baseline awakening cortisol and longitudinal changes in diurnal cortisol slope, suggesting both the potential benefits and costs of resilience. Findings support the application of the dimensional approach to research on stress physiology and deepen our understanding of individual differences in the associations between child maltreatment and diurnal cortisol.

Trajectories of positive youth development and promotive factors among adolescents during the transition to high school in China.

Within the framework of positive youth development (PYD) and life course theory, this study was designed to examine patterns of PYD and promotive factors over the first semester of Chinese high school with a sample of 480 students (boys, 43.96%). The growth mixture model identified four trajectories of PYD, labeled high start-fast decreasing, high start-low decreasing, low start-low increasing, and mid-persistent. Results also showed that membership in a PYD trajectory is significantly related to three promotive factors: parental involvement, teacher involvement, and intentional self-regulation. These findings have important theoretical and practical insights for a deeper understanding of the underlying mechanisms of positive development in adolescents following the critical period surrounding the transition to high school.

Parent-Child Separation and Diurnal Cortisol Rhythms Among Left-Behind Adolescents: The Moderating Role of Sex.

Prior research examining parent-child separation and the hypothalamic-pituitary-adrenal (HPA) axis functioning has primarily focused on separation due to parental divorce or loss or forced migration. Less clear is the impact of parental economic migration on adolescents' HPA axis functioning. The present study fills this gap by examining diurnal cortisol patterns among left-behind adolescents who experienced separation from their migrant parents. Participants were 293 Chinese adolescents (33.4% girls, 66.21% left-behind adolescents; Mage = 10.80 years old, SD = 0.82 years). Two-level multilevel modeling was conducted to examine the associations between parent-child separation experiences and diurnal cortisol patterns. Although no significant differences were found between left-behind adolescents and their non-left-behind peers, results revealed that left-behind adolescents who experienced parent-child separation at earlier ages had more blunted diurnal cortisol slopes (usually signaling poorer mental and physical health), compared to their counterparts who experienced separation at older ages. Left-behind adolescent girls who had more adverse separation experiences exhibited smaller waking cortisol and blunted diurnal slopes; these findings were not observed among left-behind adolescent boys. Observing the association between timing of parent-child separation and adolescents' diurnal cortisol and the moderating effects of child sex, this study contributes uniquely to the developmental science of left-behind adolescents' physiological health.

Psychological and Physical Abuse and Cortisol Response to Stress: The Moderating Role of Psychosocial Resources.

Child abuse is associated with alterations in the hypothalamic-pituitary-adrenal (HPA) axis functioning. However, the unique effects of psychological and physical abuse and protective factors against these effects remain largely unknown. To close these gaps, the present study examined the unique effects of psychological and physical abuse on cortisol stress response and explored the moderating role of psychosocial resources in these associations among a sample of Chinese preadolescent children (N = 150; aged 9-13 years; Mage = 10.69 years; 51% boys). The results showed that both psychological and physical abuse were associated with blunted cortisol reactivity slopes. Psychological abuse, but not physical abuse, was associated with lower peak cortisol values and flatter cortisol recovery slopes. Further, psychosocial resources moderated the association between abuse and hyporesponsiveness of the HPA axis. The association between psychological abuse and lower peak cortisol values and the association between physical abuse and steeper cortisol recovery slopes (faster cortisol recovery following the stressor) were observed only among children with low levels of psychosocial resources. These findings indicate the differential effects of psychological and physical abuse on various phases of cortisol stress response, and the protective role of psychosocial resources. This study also has practical implications, given that preadolescence serves as a critical period for maximizing benefit of interventions of adversity.

Trajectories of Perceived Stress among Students in Transition to College: Mindset Antecedents and Adjustment Outcomes.

There is growing evidence of a clear association between students' perceived stress and their adjustment to life at college. However, the predictors and implications of distinct changing patterns of perceived stress during the transition to college life are less clear. To address these research gaps, the current study aims to identify distinct patterns of perceived stress trajectories among 582 Chinese first-year college students (Mage = 18.11, SDage = 0.65; 69.40% female) across the first 6 months upon enrollment. Three distinct profiles of perceived stress trajectories, i.e., low-stable (15.63%), middle-decreasing (69.07%), and high-decreasing (15.29%), were identified. Moreover, individuals who followed the low-stable trajectory showed better distal outcomes (specifically, higher levels of well-being and academic adjustment) 8 months after enrollment than those who followed the other two trajectories. Furthermore, two types of positive mindset (a growth mindset of intelligence and a stress-is-enhancing mindset) contributed to differences in perceived stress trajectory, either independently or jointly. These findings highlight the significance of identifying different patterns of perceived stress among students during the transition to college, as well as the protective roles of both a stress mindset and a mindset of intelligence.

Significance of Mannan Binding Lectin-Associated Serine Protease 2 in Urinary Extracellular Vesicles in IgA Nephropathy.

PURPOSE: Immunoglobulin A (IgA) nephropathy (IgAN) is a common chronic glomerulonephritis and the main cause of end-stage renal diseases. Recent evidence suggests that mannan binding lectin associated serine proteases 2 (MASP2) is related to IgAN; therefore, we investigated the expression and significance of MASP2 in serum and urinary extracellular vesicles (UEVs) in patients with IgAN. METHODS: Thirty-eight patients with IgAN and 17 healthy controls were enrolled in this study. UEVs were extracted by ultracentrifugation. The separation by ultra-high-speed centrifuge was verified by transmission electron microscopy (TEM) and nanoparticle tracking analysis (NTA). Candidate internal references (TSG101, CD9, flotillin, ß-actin and GAPDH) were identified by western blotting in the control group, and the expression of MASP2 in the UEVs was compared. The levels of MASP2 in the serum and UEVs in the IgAN and control groups were determined by enzyme-linked immunosorbent assay (ELISA). RESULTS: TEM and NTA results demonstrated that UEVs were successfully extracted. Western blotting results confirmed that TSG101 was suitable as an internal reference for this study. Compared with the control group, the IgAN group showed positive expression of MASP2. MASP2 levels in the UEVs, determined by ELISA, showed significant differences between IgAN and control groups, which were significantly positively correlated with the level of urinary microalbumin. CONCLUSIONS: The level of MASP2 in UEVs was related to IgAN and shows promise as a biomarker for evaluating the severity of renal injury and prognosis of IgAN, thereby helping to elucidate the role of MASP2 in the mannan-binding lectin pathway.

A mindfulness-based mobile health (mHealth) intervention among psychologically distressed university students in quarantine during the COVID-19 pandemic: A randomized controlled trial.

This randomized controlled trial evaluated the effect of a mindfulness-based mobile health (mHealth) intervention, tailored to the pandemic context, among young adult students (N = 114) with elevated anxiety and/or depressive symptoms during quarantine in China, compared to a time- and attention-matched social support-based mHealth control. At baseline, postintervention (1 month), and 2-month follow-up, participants completed self-reports of primary outcomes (anxiety and depression), secondary outcomes (mindfulness and social support), and emotional suppression as a culturally relevant mechanism of change. Feasibility and acceptability were also evaluated. Using intent-to-treat (ITT) analysis, linear mixed effects models showed that compared to social support mHealth, mindfulness mHealth had a superior effect on anxiety (p = .024, between-group d = 0.72). Both conditions improved on depression (baseline-to-FU ds > 1.10, between-group difference not significant, d = 0.36 favoring mindfulness). There was an interaction of Emotional suppression reduction × Condition in the improvement of anxiety and depression. Further, mindfulness mHealth was demonstrated to be more feasible and acceptable in program engagement, evaluation, skills improvement, and perceived benefit. Retention was high in both conditions (>80%). The difference in self-reported adverse effect was nonsignificant (3.9% in mindfulness and 8.7% in social support). Results of this pilot trial suggest that both mindfulness and social support, delivered via mHealth, show promise in reducing distress among young adults in quarantine, with mindfulness being particularly effective in addressing anxiety. Successful implementation and dissemination of this mHealth intervention approach have the potential for addressing the psychological consequences of the pandemic. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Resilience of adolescents, though weakened during pandemic-related lockdown, serves as a protection against depression and sleep problems.

Adolescents facing adversities are susceptible to depression and sleep problems. Resilience is an important protective mechanism for coping with adversity. During the COVID-19 pandemic, adolescents faced hardships including being pulled from their schools and being unable to socialize with friends during mandated lockdowns. We had three aims in this study. First, we sought to test whether Chinese adolescents' resilience was strengthened, maintained, or weakened during the COVID-19 lockdown. Second, we sought to test whether adolescents' resilience predicted depressive symptoms and in turn, sleep problems. Third, we sought to examine the role social support may play. In a partially-longitudinal survey study, we demonstrated via a within-subject t-test and its Bayesian equivalent that Chinese adolescents' resilience weakened during the lockdown compared with before the pandemic. However, resilience remained an important predictor: A mediation model demonstrated that higher resilience was associated with fewer depressive symptoms, which in turn predicted fewer sleep problems. Moreover, we found that social support moderated this mediation: Strong social support reduced the negative effects of low resilience levels. These results help shed light on the fragility of resilience, its importance for adolescents' mental health when facing adversity, and how we might support adolescents experiencing social distancing mandates or who are otherwise isolated from their peers.

Trajectories of Perceived Discrimination among Chinese Rural-to-Urban Migrant Early Adolescents: Predictors and Outcomes.

Perceived discrimination is associated with poorer psychological adjustment and greater problem behaviors among rural-to-urban migrant adolescents. Yet, the predictors and the consequences of distinct changing patterns of perceived discrimination are less clear. The current study sought to identify distinct patterns of perceived discrimination trajectories and examine the developmental implications of these patterns among 385 Chinese rural-to-urban migrant early adolescents (Mage = 10.49, SDage = 0.69; 62% boys). Four distinct patterns of perceived discrimination trajectories, i.e., Low-stable (79.59%), Decreasing (9.08%), High-stable (6.11%), and Increasing (5.22%), were identified. Predictors including resilience, family support, peer support, and demographic characteristics (i.e., gender and school types) contributed to differences in pattern membership. Moreover, the Low-stable pattern exhibited more favorable distal outcomes (i.e., lower levels of social anxiety and loneliness and higher levels of self-esteem) than the other three patterns; the Decreasing group had lower levels of loneliness than the High-stable group. The findings extend the understanding of the predictors and consequences of perceived discrimination among rural-to-urban migrant early adolescents from a developmental perspective.

Associations between trait and state perceived stress and daily moods: COVID-19 stressful experiences as a moderator.

Drastically disrupting daily routines, the global pandemic of COVID-19 has posed critical mental health threats to adolescents and young adults worldwide. Many of the extant empirical findings, however, have focused on individuals' psychological adjustment during the initial phase of the pandemic. It is less clear how COVID-19 stressful experiences impact young people's daily lives in the post-pandemic "new normal." Drawing on 7-day diary reports, the present study fills this gap by examining: (1) how daily perceived stress impacted daily emotional adjustment; and (2) the moderating effects of COVID-19 stressful experiences on these associations among 582 Chinese young adults (M age = 18.12, SD = .65; 69% females). Results indicated that higher levels of both trait (i.e., average levels) and state (i.e., daily fluctuations) perceived stress were associated with greater negative and anxious moods, and that prior pandemic-related experiences exacerbated the adverse impact of both trait and state perceived stress on daily moods. Specifically, young adults reporting greater COVID-19 stressful experiences demonstrated poorer emotional adjustment (i.e., lower levels of positive mood and higher levels of negative mood) on days when they had more fluctuations in perceived stress; the aggravating impact was stronger when the average levels of perceived stress were higher. By illuminating the moderating effects of COVID-19 stressful experiences, this study contributes to the limited, but burgeoning, research examining the prolonged impact of the COVID-19 health crisis on daily emotional adjustment in post-pandemic life.

Perceived Social Support and Children's Physiological Responses to Stress: An Examination of the Stress-Buffering Hypothesis.

OBJECTIVE: The current study aimed to examine the stress-buffering effect of children's perceived social support on their hypothalamic-pituitary-adrenocortical axis and autonomic nervous system reactivity to an acute laboratory stressor. METHODS: A sample of 150 children (aged 9-13 years, mean [standard deviation] age = 10.69 [0.93] years, 74 girls) reported perceived social support, stressful life events, and underwent the Modified Trier Social Stress Test, during which six saliva samples were collected. A two-piece multilevel growth curve model with landmark registration was used to detect trajectory differences in the reactivity and recovery phases of the stress response and account for individual variation in the timing of poststressor peak hormone concentrations. RESULTS: The interaction between stressful life events and perceived social support significantly predicted poststressor peak cortisol levels (ß = 0.0805, SE = 0.0328, p = .015) and cortisol recovery slope (ß = -0.0011, SE = 0.0005, p = .040). Children with more life events and low social support exhibited the lowest poststressor peak cortisol levels and the flattest cortisol recovery slope. In contrast, children high in stressful life events and high in social support displayed cortisol response profiles more similar to those of children with low stressful life events. Conversely, there were no statistically significant two-way interactions of stressful life events and perceived social support on salivary α-amylase parameters (i.e., poststressor peak [p = .38], reactivity slope [p = .81], and recovery slope [p = .32]). CONCLUSIONS: These results provide preliminary evidence for the buffering effect of children's perceived social support on the association between life stress and hypothalamic-pituitary-adrenocortical axis response profiles.

Psychiatric symptoms, risk, and protective factors among university students in quarantine during the COVID-19 pandemic in China.

BACKGROUND: The COVID-19 pandemic has made unprecedented impact on the psychological health of university students, a population vulnerable to distress and mental health disorders. This study investigated psychiatric symptoms (anxiety, depression, and traumatic stress) during state-enforced quarantine among university students in China (N = 1912) through a cross-sectional survey during March and April 2020. RESULTS: Psychiatric symptoms were alarmingly prevalent: 67.05% reported traumatic stress, 46.55% had depressive symptoms, and 34.73% reported anxiety symptoms. Further, 19.56% endorsed suicidal ideation. We explored risk and protective factors of psychological health, including demographic variables, two known protective factors for mental health (mindfulness, perceived social support), four COVID-specific factors (COVID-19 related efficacy, perceived COVID-19 threat, perceived COVID-19 societal stigma, COVID-19 prosocial behavior) and screen media usage. Across symptom domains, mindfulness was associated with lower symptom severity, while COVID-19 related financial stress, perceived COVID-19 societal stigma, and perceived COVID-19 threat were associated with higher symptom severity. COVID-19 threat and COVID-19 stigma showed main and interactive effects in predicting all mental health outcomes, with their combination associated with highest symptom severity. Screen media device usage was positively associated with depression. Female gender and COVID-19 prosocial behavior were associated with higher anxiety, while COVID-19 self-efficacy associated with lower anxiety symptoms. CONCLUSIONS: Findings suggest high need for psychological health promotion among university students during the COVID-19 pandemic and inform an ecological perspective on the detrimental role of stigma during an emerging infectious disease outbreak. Interventions targeting multi-level factors, such as promoting mindfulness and social support at individual and interpersonal levels while reducing public stigma about COVID-19, may be particularly promising. Attending to the needs of disadvantaged groups including those financially impacted by COVID-19 is needed.

Clustering of multiple lifestyle behaviors among migrant, left-behind and local adolescents in China: a cross-sectional study.

BACKGROUND: Influence of migration on externalized behavioral problems (e.g., aggressive) among adolescents has been well assessed, yet lifestyle behaviors of migrant, left-behind and local adolescents have been largely overlooked by researchers and policy-makers. Therefore, this study aimed to identify clustering of multiple lifestyle behaviors and their associations with migrant status among Chinese adolescents. METHODS: A cross-sectional survey was conducted in 2015 in Beijing, and Wuhu city (Anhui province). Adolescents self-reported age, gender, family economic status, migrant situation, and lifestyle behaviors (i.e., physical activity, screen time, sleep, smoke, soft-drink, alcohol, fruit and vegetable consumption) via a battery of validated questionnaires. Latent class analysis was conducted to identify behavioral clusters using Mplus 7.1. ANOVA, and multivariable logistic regression were used to examine associations between migrant situations and behavioral clusters using SPSS 22. RESULTS: Three distinct behavioral clusters were exhibited among 1364 students (mean age: 13.41 ± 0.84 years): "low risk" (N = 847), "moderate risk" (N = 412) and "high risk" (N = 105). The "high-risk" cluster had the highest prevalence of adolescents not meeting healthy behavioral recommendations. There were no significant differences in the prevalence of high-risk lifestyle among migrant, left-behind, rural local and urban local adolescents. But migrant adolescents had the lowest prevalence of low-risk lifestyle, followed by left-behind, rural and urban local adolescents. Moreover, compared with urban local, migrant (OR = 2.72, 95%CI: 1.88,3.94), left-behind (OR = 2.28, 95%CI: 1.46, 3.55), and rural local (OR = 1.76, 95%CI:1.03,3.01) adolescents had a higher risk of moderate-risk lifestyle. CONCLUSIONS: Clustering of assessed lifestyle behaviors differed by the migrant status. Particularly, migrant and left-behind adolescents were more likely to have moderate-risk lifestyle compared with their counterparts. Interventions that promote moderate to vigorous physical activity and consumption of fruits and vegetables simultaneously are needed among them.

Left-behind children's social adjustment and relationship with parental coping with children's negative emotions during the COVID-19 pandemic in China.

Using data collected from two provinces in China through an online survey, the current study aimed to investigate left-behind children's emotional and academic adjustment during the COVID-19 pandemic in China. The participants included 1780 left-behind (960 boys) and 1500 non-left-behind (811 boys) children in elementary and junior high school with a mean age of 11.23. Self-reported questionnaires concerning children's depression, loneliness, anxiety, and academic adjustment, and parents' coping with children's negative emotions were completed. The results suggested that compared with non-left-behind children, left-behind children's depression and anxiety symptoms were more severe and their academic adjustment was poorer. However, left-behind children had lower levels of loneliness than non-left-behind children. Additionally, supportive coping types, especially emotion-focused and problem-focused reactions, were significantly negatively correlated with children's depression and anxiety. Unsupportive coping types, especially distress and punitive reactions, were significantly positively correlated with children's depression and anxiety symptoms. Moreover, the relationships between punitive reactions and depression, ignoring and loneliness and problem-focused reactions and academic adjustment were significantly stronger in left-behind children. Hence, during the pandemic, left-behind children were still at a disadvantage even with their parents' company. However, parents' coping style towards left-behind children's negative emotions played a significant role in their adjustment.

Adherence to preventive behaviors among college students during COVID-19 pandemic in China: The role of health beliefs and COVID-19 stressors.

Before herd immunity is reached, preventive practices still play an important role in controlling the COVID-19 pandemic. Adherence to preventive behaviors could be determined by individuals' health beliefs, which would be influenced by antecedent factors such as previous exposure to pandemic stressors. Applying the health belief model (HBM), this study aims to examine the mediation association among COVID-19 stressors, HBM constructs, and preventive behaviors. Longitudinal data were collected from 1225 Chinese college students using web-based surveys at wave 1 (w1; between January 31 and February 11, 2020) and wave 2 (w2; between March 20 and April 3, 2020). Participants reported their COVID-19 stressors (w1), five HBM constructs (w2), and preventive behaviors (w1 and w2). Paired t-tests suggested that social distancing and self-quarantine behaviors decreased while precautionary behaviors increased from w1 to w2. Path analysis indicated that two HBM constructs (perceived barriers and self-efficacy) mediated the association between COVID-19 stressors and precautionary behaviors. These findings suggested that tailored prevention intervention for college students should attend to perceived barriers and self-efficacy. Individuals who exposed to multiple pandemic stressors merit particular attention and intervention should account for their early pandemic stress experiences.