Sleep disturbance is predictive of psychotic-like experiences among adolescents: A two-wave longitudinal survey

Longitudinal trajectories of psychotic-like experiences influence adolescent suicidal ideation: The mediating role of depressive symptoms

BACKGROUND

Psychotic-like experiences (PLEs) are strongly associated with poor mental health among adolescents. This study aims to investigate distinct longitudinal trajectories of the PLEs and their relationship to suicidal ideation (SI), as well as to evaluate the mediating effect of depressive symptoms on this link.

METHODS

A total of 7529 Chinese adolescents were surveyed on PLEs online during April 21 to May 12, 2021 (Time 1, T1), December 17 to 26, 2021 (Time 2, T2), and May 17 to June 5, 2022 (Time 3, T3). Depressive symptoms and SI were assessed at T1 and T3.

RESULTS

The prevalence of frequent PLEs across the three surveys was 13.5 %, 13.2 %, and 11.0 %, respectively. Five PLEs trajectories were identified: resistance (74.4 % of the sample), recovery (9.2 %), delayed-dysfunction (6.6 %), relapsing/remitting (7.0 %), and chronic-dysfunction (2.8 %). Adolescents in recovery, delayed-dysfunction, relapsing/remitting, and chronic-dysfunction trajectories compared with those in the resistant group were all more likely to experience SI at T3 after adjusting for a wide range of covariates. Depressive symptoms partially mediated the effects of PLEs trajectories (relative to the resistance trajectory) on SI (95 % CIs: 0.07-0.13, 0.37-0.48, and 0.28-0.41 for relapsing/remitting, delayed-dysfunction, and chronic-dysfunction trajectories, respectively).

CONCLUSIONS

PLEs are common among adolescents and have heterogeneity of change patterns. The association between PLEs trajectories and SI is partially mediated by depressive symptoms. Timely assessment and targeted interventions for specific PLEs are necessary to reduce the incidence of mental disorders.

The longitudinal association between problematic Internet use and psychotic-like experiences in adolescents: Mediated by sleep disturbance and moderated by psychological resilience

Problematic Internet use (PIU) has been empirically identified as a risk factor for future psychotic-like experiences (PLEs) among adolescents. This study aimed to examine the short-term predictive role of PIU on PLEs in adolescents and investigate their underlying mechanisms, focusing on the mediating role of sleep disturbance and the moderating role of psychological resilience. A total of 27,260 Chinese adolescents (52.2 % males, Meanage = 14.33 ± 1.49) were included for analyses in this two-wave longitudinal study conducted six months apart. The baseline survey (time 1, T1) was between December 17 and 26, 2021, and the follow-up survey (time 2, T2) was between May 17 and June 5, 2022. Participants reported their socio-demographics, T1 PIU, T1 sleep disturbance, T1 resilience, T1 PLEs, T2 PLEs, and T2 negative life events. After controlling for socio-demographics, T1 PLEs, and T2 negative life events, T1 PIU exacerbated T2 PLEs directly and indirectly through T1 sleep disturbance, with T1 resilience moderating both parts of the mediation pathway. These findings provide novel insights into the mechanisms linking PIU to PLEs among adolescents and offer valuable implications for clinical practice and school policy.

Profiles of Intolerance of Uncertainty Among 108,540 Adolescents: Associations with Sociodemographic Variables and Mental Health

Intolerance of uncertainty (IU) is widely considered a transdiagnostic risk and maintaining factor for psychiatric disorders. However, little is known about the overall nature and profile of IU among adolescents. This study aims to investigate the profiles of IU among Chinese adolescents and explore their associations with sociodemographic characteristics and mental health problems. A sample of 108,540 adolescents provided data on IU, sociodemographic characteristics, and mental health via an online platform. Latent profile analysis revealed three profiles: Low IU, Medium IU, and High IU. Girls, older adolescents, and those with specific sociodemographics were more likely to belong to the "High IU" profile. Furthermore, the "High IU" profile was associated with the highest risk of several mental health problems. These findings provided valuable information for early prevention and intervention strategies targeting IU and highlighted the importance of IU-based interventions for mental health among adolescents.

The effect of sleep disturbance trajectories on psychotic-like experiences among adolescents: the mediating role of depressive symptoms

Previous work supported the opinion that sleep disturbance may cause adolescent PLEs. This study intended to evaluate the mediating effect of depressive symptoms on the relationship between change in sleep disturbance and psychotic-like experiences (PLEs) among adolescents. A total of 7529 adolescents completed three web-based surveys. Surveys were administered from April 21 to May 12, 2021 (Time 1, T1), again 6 months later from December 17 to 26, 2021 (Time 2, T2), and one year later from May 17 to June 5, 2022 (Time 3, T3). A series of self-assessment scales were used to measure sleep disturbance, depressive symptoms, PLEs, and other relevant variables. Mediation analysis was utilized to examine the association between sleep disturbance trajectories, depressive symptoms, and PLEs. Five trajectories of sleep disturbance were identified: no/low (72.2%), remission (8.8%), relapsing/remitting (7.4%), new-onset (8.9%), and persistent (2.7%) trajectories. Depressive symptoms partially mediated the effects of sleep disturbance trajectories (relative to the no/low trajectory) on PLEs (95% CIs: 0.20-0.30, 0.42-0.53, and 0.41-0.58 for relapsing/remitting, new-onset, and persistent trajectories, respectively). This study reveals that the association between sleep disturbance trajectories and PLEs was partially mediated by depressive symptoms. To prevent the onset of PLEs, early screening and interventions targeting sleep disturbance and depressive symptoms are quite essential.

The association of parental insomnia symptoms with adolescent insomnia and depressive symptoms: A child-parent dyad study

Intergenerational transmission may be present in adolescents' sleep and mental health problems, but there is limited evidence currently available. The current study aimed to examine the effects of parental insomnia symptoms on adolescent insomnia and depressive symptoms. From 21 April to May 12, 2021, this study conducted a large-scale cross-sectional survey in south China, 68,751 valid child-parent matched data were collected. The current study measured parental insomnia symptoms, adolescent insomnia symptoms, adolescent depressive symptoms, and demographic characteristics. SPSS 27 statistical software was used to perform Chi-square analysis, binary logistic regression, and indirect effect testing. In this sample, maternal and paternal insomnia has a prevalence of 8.2 % and 7.5 %. Among adolescents whose mother or father had insomnia, the prevalence of insomnia reached to 15.7 % and 15.1 %, and the prevalence of depressive symptoms reached to 17.6 % and 15.6 %. Adolescents whose parents have insomnia were more likely to suffer from insomnia and depressive symptoms. Moreover, parents' insomnia positively influences adolescent depressive symptoms through the mediation of the child's insomnia. This study prompts a reevaluation of family health dynamics in clinical practice and public health policy, leading to a more holistic approach to addressing adolescent sleep patterns and depressive symptoms.

Associations of weekend compensatory sleep and weekday sleep duration with psychotic-like experiences among Chinese adolescents

OBJECTIVE

Insufficient sleep on weekdays among adolescents and its negative effects on mental health is a concerning public health issue. This study examined the relationship between weekday sleep duration, weekend compensatory sleep (WCS), and psychotic-like experiences (PLEs) in a large sample of Chinese adolescents.

METHODS

A total of 39,731 junior high school students were recruited in this cross-sectional study. A self-report questionnaire was used to assess sleep duration, social-demographical characteristics, anxiety and depressive symptoms, and PLEs. Logistic regression and stratified analysis were performed to explore the associations between WCS and PLEs.

RESULTS

The prevalence of current PLEs was 12.4 % in this study. The average weekday sleep duration among adolescents was 7.7 ± 1.0 h. 93.2 % of participants reported WCS, with an average duration of 1.8 ± 1.6 h. WCS was significantly associated with a lower risk of PLEs (OR = 0.79, 95 % CI: 0.70-0.90). Moreover, 0-2 h of WCS was linked to a reduced risk of PLEs, regardless of whether students with weekday sleep duration <8 h (OR = 0.74, 95 % CI: 0.61-0.91) or ≥8 h (OR = 0.69, 95 % CI: 0.57-0.82). However, the significant role of WCS >2 h against PLEs was observed only among adolescents with weekday sleep duration <8 h (OR = 0.79, 95 % CI: 0.65-0.97).

CONCLUSION

WCS was associated with a lower risk of PLEs in adolescents, particularly those with insufficient weekday sleep. These findings highlight the importance of sufficient sleep and the potential benefits of compensatory sleep on adolescents' mental health.

Sleep and circadian difficulties in schizophrenia: presentations, understanding, and treatment

It is common in mental health care to ask about people's days but comparatively rare to ask about their nights. Most patients diagnosed with schizophrenia struggle at nighttime. The next-day effects can include a worsening of psychotic experiences, affective disturbances, and inactivity, which in turn affect the next night's sleep. Objective and subjective cognitive abilities may be affected too. Patients commonly experience a mix of sleep difficulties in a night and across a week. These difficulties include trouble falling asleep, staying asleep, or sleeping at all; nightmares and other awakenings; poor-quality sleep; oversleeping; tiredness; sleeping at the wrong times; and problems establishing a regular sleep pattern. The patient group is also more vulnerable to obstructive sleep apnea and restless legs syndrome. We describe in this article how the complex presentation of non-respiratory sleep difficulties arises from variation across five factors: timing, mental state, need for sleep, self-care, and environment. We set out 10 illustrative patterns of such difficulties experienced by patients with non-affective psychosis. These sleep problems are eminently treatable with intensive psychological therapy delivered over approximately eight sessions. We describe key techniques and their typical order of implementation by presentation. Sleep problems are an important issue for patients. Giving them the therapeutic attention patients often desire brings both real clinical benefits and improves views of services. Treatment is also very likely to lessen psychotic experiences and mood disturbances while improving daytime functioning and quality of life. Tackling sleep difficulties can be a route toward the successful treatment of psychosis.

Mental Health Literacy Buffers the Association Between Nightmare Distress and Psychotic-Like Experiences Among College Students

BACKGROUND

Nightmares may lead to psychotic-like experiences (PLEs). The present study aimed to examine the potential moderating and mediating effects of mental health literacy (MHL) on the association between nightmare distress (ND) and PLEs among Chinese college students.

METHODS

A total of 4000 college students who have had nightmares in the past year were assessed using the Chinese version of the nightmare distress questionnaire (NDQ-CV), mental health knowledge questionnaire (MHKQ), 15-item positive subscale of the community assessment of psychic experiences (CAPE-P15), 2-item insomnia questionnaire, 2-item patient health questionnaire (PHQ-2), and a self-compiled sample characteristics questionnaire.

RESULTS

Greater ND and lower MHL were associated with an elevated risk of PLEs among college students when adjusting for sample characteristics, insomnia and depressive symptoms. Moderation analysis indicated that MHL buffers the association between ND and PLEs, such that a higher level of MHL attenuates the positive effect of ND on PLEs to a greater extent.

CONCLUSIONS

These findings strongly stressed the urgent need for early intervention in college students with ND. Strategies should prioritise treating ND and enhancing MHL, as these may be effective approaches to preventing and reducing PLEs.

Concurrent and longitudinal associations of dissatisfaction with height and weight, body mass index with sleep disturbance among adolescents in China

Sleep disturbance in adolescents is a significant global public health issue that can result in various physical and mental disorders. Height and weight dissatisfaction, as subjective perceptions of body shape, are common in adolescence and may affect individuals' sleep situations. However, the association of them is unclear. This study aimed to examine the cross-sectional and longitudinal associations among height dissatisfaction, weight dissatisfaction, body mass index (BMI), and sleep disturbance in adolescents. A total of 27,260 participants completed measures of sleep disturbance, height and weight satisfaction, and BMI. The cross-sectional and longitudinal effects of height satisfaction, weight satisfaction, and BMI as well as their changes in sleep disturbance over time were tested. Height satisfaction (ps < 0.001) and weight satisfaction (ps < 0.001) were negatively associated with concurrent sleep disturbance after adjusting for socio-demographic covariates and previous sleep disturbance. Height satisfaction (ps < 0.001) and weight satisfaction (ps < 0.001) at T1 as well as their increases (ps < 0.001) over 6 months predicted decreases in sleep disturbance over time. The cross-sectional and longitudinal associations between BMI and sleep disturbance were not significant (ps > 0.42). Moreover, height dissatisfaction (ORs = 1.06 to 1.34) and weight dissatisfaction (ORs = 1.21 to 1.36) were risk factors for concurrent and long-term sleep disturbance while adjusting socio-demographic covariates and previous sleep disturbance. Greater attention to subjective perception of height satisfaction and weight satisfaction, instead of BMI is needed.

Bidirectional associations between short sleep duration, insomnia symptoms, and psychotic-like experiences in adolescents

This study investigates the prospective associations between short sleep duration, insomnia symptoms, and psychotic-like experiences (PLEs) in a large sample of Chinese adolescents. This study utilized a three-timepoint repeated cross-sectional survey with two nested longitudinal subsamples. A total of 17,722 adolescents were assessed at baseline (April 21 to May 12, 2021) and six months later (December 17 to 26, 2021). Out of these, 15,694 adolescents provided complete responses to the questions at baseline and one year later (May 17 - June 6, 2022). A self-administered questionnaire was used to measure sample characteristics (at baseline), sleep duration, insomnia symptoms, and PLEs (at each assessment), and negative life events (at two follow-ups). Baseline short sleep duration and insomnia symptoms predicted frequent PLEs at both follow-up assessments. Additionally, baseline frequent PLEs also predicted insomnia symptoms at six months and one year later. However, when controlling for confounders, PLEs at baseline only predicted short sleep duration at six months, and not at one year. This study reveals bidirectional prospective relationships between short sleep duration, insomnia symptoms, and PLEs, even after controlling for covariates. Therefore, it is crucial to assess both sleep patterns and PLEs in order to promote optimal sleep and mental health among adolescents.

Prevalence of cyberbullying involvement and its association with clinical correlates among Chinese college students

BACKGROUND

Cyberbullying refers to a modern form of bullying that could be practiced electronically or on the Internet. This study conducted a cross-sectional survey to explore different types of cyberbullying involvement (CI) and the associations of CI with demographic characteristics and mental health problems among Chinese college students.

METHODS

A total sample of 18,578 Chinese college students were recruited (68.1 % female, mean age = 20.07 years) from October 17 to 29, 2023. All participants completed self-reported web-based questionnaires on demographic characteristics, CI, sleep disturbance, depression, anxiety, and suicidal ideation.

RESULTS

More than a quarter of participants (27.5 %) have been involved in cyberbullying: specifically speaking, 10.1 % cybervictims, 4.7 % cyberbullies, and 12.7 % both (cyberbully-victims). Males, younger age, left-behind experiences, individuals with poorer family economic status, adolescents with chronic physical illness, and those with family history of mental disorders are more likely to experience CI. Unlike participants without CI, cybervictims and cyberbully-victims reported a higher risk of sleep disturbance, depression, anxiety, and suicidal ideation. Cyberbullies also have a higher rate of sleep disturbance and depression than their peers who are not involved in cyberbullying.

CONCLUSION

Our findings indicate that CI is widespread among Chinese college students, and CI is associated with the high reported rates of a series of psychopathology. This study highlights the significance of implementing anti-cyberbullying interventions specifically targeted at college students. Furthermore, it underscores the importance of monitoring changes in students' mental health status throughout the intervention process.

Associations between disturbed sleep and attenuated psychotic experiences in people at clinical high risk for psychosis

BACKGROUND

Pre-diagnostic stages of psychotic illnesses, including 'clinical high risk' (CHR), are marked by sleep disturbances. These sleep disturbances appear to represent a key aspect in the etiology and maintenance of psychotic disorders. We aimed to examine the relationship between self-reported sleep dysfunction and attenuated psychotic symptoms (APS) on a day-to-day basis.

METHODS

Seventy-six CHR young people completed the Experience Sampling Methodology (ESM) component of the European Union Gene-Environment Interaction Study, collected through PsyMate® devices, prompting sleep and symptom questionnaires 10 times daily for 6 days. Bayesian multilevel mixed linear regression analyses were performed on time-variant ESM data using the brms package in R. We investigated the day-to-day associations between sleep and psychotic experiences bidirectionally on an item level. Sleep items included sleep onset latency, fragmentation, and quality. Psychosis items assessed a range of perceptual, cognitive, and bizarre thought content common in the CHR population.

RESULTS

Two of the seven psychosis variables were unidirectionally predicted by previous night's number of awakenings: every unit increase in number of nightly awakenings predicted a 0.27 and 0.28 unit increase in feeling unreal or paranoid the next day, respectively. No other sleep variables credibly predicted next-day psychotic symptoms or vice-versa.

CONCLUSION

In this study, the relationship between sleep disturbance and APS appears specific to the item in question. However, some APS, including perceptual disturbances, had low levels of endorsement amongst this sample. Nonetheless, these results provide evidence for a unidirectional relationship between sleep and some APS in this population.

Perceived school bullying and psychotic-like experiences in sexual minority adolescents: the mediating and moderating roles of resilience

AIMS

This two-wave, longitudinal study aimed to examine the potential moderating and mediating effects of resilience on the association between perceived school bullying and psychotic-like experiences among Chinese sexual minority adolescents.

METHODS

A total of 4192 senior high students were included and 984 (23.5%) of them were identified as a sexual minority (mean age = 16.68 years, SD = 0.71). Participants completed two online surveys during April 21 to May 12, 2021 and December 17 to 26, 2021, respectively, as well as completed self-report measures of sample characteristics, perceived school bullying, resilience, and psychotic-like experiences (including two dimensions: delusional experiences and hallucinatory experiences).

RESULTS

Perceived school bullying and resilience were associated with psychotic-like experiences in sexual minority adolescents. Resilience mediated the relationship between perceived school bullying and subsequent psychotic-like experiences (b = 0.03, 95% CI = 0.01 ~ 0.04)/ delusional experiences (b = 0.03, 95% CI = 0.01 ~ 0.04)/ hallucinatory experiences (b = 0.02, 95% CI = 0.01 ~ 0.03). Additionally, resilience only moderated the associations of perceived school bullying with hallucinatory experiences (b = -0.06, 95% CI = -0.12 ~ -0.01).

CONCLUSIONS

These findings indicated that resilience plays a crucial role in mediating or moderating the relationship between perceived school bullying and psychotic-like experiences. Assessing and reducing school bullying, as well as promoting resilience, may have important clinical implications for reducing the risk of psychotic-like experiences in sexual minority adolescents.

Sleep disturbance and suicidal ideation mediated by psychotic-like experiences in adolescents: a two-wave longitudinal study

STUDY OBJECTIVES

Sleep disturbance may cause suicidal ideation (SI). This study aimed to examine their co-occurrence rate among adolescents and investigate whether psychotic-like experiences (PLEs) mediate this association.

METHODS

A total of 17 722 Chinese adolescents were included in this two-wave longitudinal study. The baseline survey (time 1, T1) was conducted between April 21 and May 12, 2021, and the follow-up survey (time 2, T2) was implemented between December 17 and 26, 2021. At T1, participants completed questionnaires to assess their sleep disturbance, sleep duration, PLEs, SI, depressive symptoms, and sociodemographic characteristics. At T2, participants reported their PLEs, SI, and negative life events.

RESULTS

The SI prevalence decreased from 20.2% (T1) to 18.4% (T2). Participants with SI showed significantly higher prevalence of sleep disturbance and short sleep duration compared to those without SI. Baseline sleep disturbance and short sleep duration were both associated with the increased risk of SI 6 months later. These longitudinal links were mediated by PLEs, independent of baseline covariates and negative life events.

CONCLUSIONS

These findings provide a novel insight into the mechanism linking sleep problems and suicidality, and stress the significance of assessing and addressing sleep problems and PLEs for adolescent suicide prevention and intervention.

Current Psychotic-Like Experiences Among Chinese College Students: Prevalence, Correlates, and Its Relationship with Suicidal Ideation

Background

Current psychotic-like experiences (PLEs) are prevalent among adolescents. However, epidemiological data on the prevalence rate of current PLEs among college students and its clinical correlates are scarce and limited. To address this study gap, this study aimed to investigate the prevalence and correlates of current PLEs among Chinese college students.

Methods

A cross-sectional study was designed with a sample of 18,578 college students in China. Each participant completed a survey on social-demographic characteristics variables, PLEs, sleep disturbance, depression, anxiety, and suicidal ideation. Logistic regression analyses were conducted to explore the influential factors for PLEs among all participants and suicidal ideation among those with PLEs.

Results

Among Chinese college students, 40.3% of the participants reported having at least one PLE in the past month, while 7.5% had frequent PLEs. Males, age, residence location in town, left-behind experiences, poor family economic status, chronic physical illness, family history of mental disorder, BMI ≥ 28 [obesity], sleep disturbance, depression, anxiety, and suicidal ideation were independent correlates for frequent PLEs. Furthermore, the prevalence of suicidal ideation among participants with frequent PLEs was 32.1%. Lower grades, sleep disturbance, depression, and anxiety were independent predictors of suicidal ideation among college students who experience PLEs frequently.

Conclusion

Current PLEs are widespread among Chinese college students. Suicidal ideation is largely prevalent among individuals who suffer frequent PLEs, suggesting that special measures and attention should be provided to these students based on relevant factors to prevent their suicidal ideation and behavior.

Changes in sleep disturbance among Chinese adolescents: A population-based online survey

OBJECTIVE

Sleep disturbance is prevalent among adolescents but little is known about the short-term changes among Chinese adolescents. The study aimed to explore the prevalence and change patterns of sleep disturbance and identify its risk and protective factors.

METHODS

Data were collected online from April 21st to May 12th, 2021 (Time 1, T1) and December 17th to 26th, 2021 (Time 2, T2). The final sample comprised 34,260 adolescents. Self-administrated questionnaires were used to assess socio-demographic variables, sleep disturbance, depression, anxiety, life events, family function, and resilience.

RESULTS

The prevalence of sleep disturbance was 12.0% at T1 and 11.8% at T2, with higher rates in females than males. Four groups of sleep disturbance change patterns were identified: non-sleep disturbance group (80.4%), persistent group (4.2%), new-onset group (7.6%), and remission group (7.8%). Risk factors for new-onset sleep disturbance included being in junior high school (AOR = 1.26, 95%CI = 1.15-1.38), family history of mental disorders (AOR = 1.49, 95%CI = 1.03-2.15), and moderate (AOR = 1.24, 95%CI = 1.13-1.36) and severe (AOR = 1.48, 95%CI = 1.27-1.72) family dysfunction. Risk factors for persistent sleep disturbance included being in junior (AOR = 1.25, 95%CI = 1.08-1.45) and senior (AOR = 1.53, 95%CI = 1.15-2.03) high school, parental currently unmarried status (AOR = 1.34, 95%CI = 1.05-1.73), moderate (AOR = 1.19, 95%CI = 1.02-1.39) and severe (AOR = 1.28, 95%CI = 1.06-1.55) family dysfunction. Medium (AOR = 0.48, 95%CI = 0.43-0.53) and high (AOR = 0.34, 95%CI = 0.29-0.40) levels of resilience were protective factors against new-onset sleep disturbance, as well as against persistent sleep disturbance (medium level: AOR = 0.51, 95%CI = 0.43-0.60; high level: AOR = 0.32, 95%CI = 0.25-0.43).

CONCLUSIONS

Interventions aimed at promoting family functions and enhancing resilience may improve sleep disturbance among adolescents.

Internet addiction and suicidal ideation among Chinese college students: the mediating role of psychotic-like experiences

Background

Individuals with Internet addiction (IA) are at significant risk of suicide-related behaviors. This study aimed to investigate the relationships among IA, psychotic-like experiences (PLEs), and suicidal ideation (SI) among college students.

Methods

A total of 5,366 college students (34.4% male, mean age 20.02 years) were assessed using the self-compiled sociodemographic questionnaires, Revised Chinese Internet Addiction Scale (CIAS-R), 15-item Positive subscale of the Community Assessment of Psychic Experiences (CAPE-P15), Self-rating Idea of Suicide Scale (SIOSS), and 2-item Patient Health Questionnaire (PHQ-2).

Results

The prevalence of IA and SI were 9.3 and 12.1% among Chinese college students, respectively. There were direct effects of IA and PLEs on SI. The total effect of IA on SI was 0.18 (p < 0.001). PLEs mediated the relationship between IA and SI (Indirect effect = 0.07).

Conclusion

IA had both direct and indirect effects on SI. These findings enable us to elucidate the mechanism of how IA influences individual SI, which can provide vital information for developing and implementing targeted interventions and strategies to alleviate SI among Chinese college students.

Psychotic-Like Experiences and Suicidal Ideation Among Adolescents: The Chain Mediating Role of Insomnia Symptoms and Resilience

Background

Individuals who experience psychotic-like experiences (PLEs) are at significant risk of suicide-related behaviors. This two-wave longitudinal study aimed to investigate the relationships among PLEs, insomnia symptoms, resilience, and suicidal ideation (SI) among adolescents.

Methods

A total of 2231 college students [mean age (standard deviation) = 20.02 (1.39) years] completed two web-based surveys. Participants completed self-report measures of sample characteristics, PLEs, insomnia symptoms, resilience, and SI.

Results

The findings indicated a significantly positive correlation between PLEs and SI that was sequentially mediated by insomnia symptoms and resilience. Furthermore, insomnia symptoms and resilience played a chain-mediating role between PLEs and adolescent SI.

Conclusion

These findings suggest potential mechanism for the PLEs-SI link, which helps us better understand how PLEs can influence individual SI and provides important information for early prevention.

The dynamic relationship between sleep and psychotic experiences across the early stages of the psychosis continuum

BACKGROUND

Psychotic disorders develop gradually along a continuum of severity. Understanding factors associated with psychosis development, such as sleep, could aid in identification of individuals at elevated risk. This study aimed to assess (1) the dynamic relationship between psychotic experiences (PEs) and sleep quality and quantity, and (2) whether this relationship differed between different clinical stages along the psychosis continuum.

METHODS

We used daily diary data (90 days) of individuals (N = 96) at early stages (i.e. before a first diagnosis of psychosis) along the psychosis continuum. Multilevel models were constructed with sleep quality and sleep quantity as predictors of PEs and vice versa. Post-hoc, we constructed a multilevel model with both sleep quality and quantity as predictors of PEs. In addition, we tested whether associations differed between clinical stages.

RESULTS

Within persons, poorer sleep predicted next day PEs (B = -0.02, p = 0.01), but not vice versa. Between persons, shorter sleep over the 90-day period predicted more PEs (B = -0.04, p = 0.002). Experiencing more PEs over 90-days predicted poorer (B = -0.02, p = 0.02) and shorter (B = -1.06, p = 0.008) sleep. We did not find any significant moderation effects for clinical stage.

CONCLUSIONS

We found a bidirectional relationship between sleep and PEs with daily fluctuations in sleep predicting next day PEs and general patterns of more PEs predicting poorer and shorter sleep. Our results highlight the importance of assessing sleep as a risk marker in the early clinical stages for psychosis.

Sleep disturbance and psychotic-like experiences among urban adolescents with and without parental migration

Aim

Sleep disturbance was closely associated with an increased risk of psychotic-like experiences (PLEs). This study aims to explore the association between sleep disturbance and PLEs among urban adolescents with and without parental migration.

Methods

A total of 67, 532 urban Chinese adolescents were recruited in a large web-based survey during April 21st to May 12th, 2021. In our study, sleep disturbance, PLEs, family function, school climate, and a series of socio-demographic were assessed. And hierarchical logistic regression analyses were performed to examine influential factors associated with PLEs.

Results

Urban left-behind children (LBC) had a higher prevalence of sleep disturbance and PLEs than non-LBC. After controlling for confounders, parental migration was associated to PLEs with weak significance (OR = 1.19). Meanwhile, sleep disturbance was found to be a robust risk factor for PLEs (OR = 3.84 and 4.09), with or without the effect of parental migration. In addition, better family function and school climate has significant association with decreased risk of PLEs.

Conclusion

Adolescents with sleep disturbance are more likely to report PLEs. Adolescents' PLEs preventive strategies could focus on reducing sleep disturbance related symptoms as well as improving family function and school climate.