Prevalence and Correlates of Psychotic Like Experiences in a Large Community Sample of Young Adults in Tunisia

Body image as a mediator in the relationship between psychotic experiences and later disordered eating: A 12-month longitudinal study in high school adolescents

BACKGROUND

The relationship between psychosis and disordered eating remains a challenging area of research to which little interest was paid. Using longitudinal data, we aimed to explore the hypothesis that the pathways from psychotic experiences (PEs) to disordered eating (DE) and body-mass index (BMI) are mediated by body-image disturbances.

METHODS

A prospective longitudinal study was performed. High-school students (N = 510, 61.2% females, mean age of 16.05 ± 1.01 years) were asked to complete three scheduled assessments (Baseline, 6 months, and 12 months).

RESULTS

Two body image components, that is, Overweight Preoccupation and Body Area Satisfaction, mediated the prospective association between baseline PEs and DE 12 months later. Direct effects were significant. After accounting for indirect effects through more severe body image concerns at 6 months, higher baseline PEs were significantly associated with greater DE at 12 months. Baseline PEs and 6-month body image explained a significant proportion of variance in 12-month DE. However, we did not find evidence of a direct prospective association between PEs and BMI.

CONCLUSION

This study is the first to assess the mediating role of body image between PEs and DE. Findings offer promising new avenues for early intervention to help mitigate the effects of PEs on DE in adolescents.

The relations of psychotic-like experiences (PLEs) and depressive symptoms and the bias of depressive symptoms during the clustering among Chinese adolescents: Findings from the network perspective

BACKGROUND

There are rare studies about the network structure of psychotic-like experiences (PLEs) and depressive symptoms among adolescents. Studies have widely acknowledged that PLEs in adolescents confer a higher risk of depressive symptoms, but the complex interactions remain inadequately understood. Our study aimed to examine the hierarchy and inter-associations of PLEs and depressive symptoms in a large adolescent sample from the network analysis perspective.

METHODS

A total of 5008 Chinese adolescents were enrolled in our sample. Community Assessment of Psychic Experiences-42 (CAPE-42) was applied to build the network. Centrality indexes were calculated to represent the significance of nodes in the network. Community detection was conducted to figure out the specific clustering of nodes. Demographic information was collected for the sub-network comparisons. Accuracy and stability of the network were also tested.

RESULTS

"Failure", "External control", and "Lack of activity" were the most central nodes. The main bridge nodes linking PLEs and depressive symptoms were "Failure", "Guilty", and "No future". Positive PLE "Odd looks" and negative PLE "Unable to terminate" are the two PLEs that were most relevant to depressive nodes. Community detection further demonstrated the bias of depressive nodes in the data-driven clustering. Comparative sub-network analysis suggested that age was the only demographic factor related to the current network.

CONCLUSION

In this study of a large adolescent sample, we first demonstrated the network structure and specific clustering preference of PLEs and depressive symptoms. Our findings may enhance the understanding of the relationship between PLE and depressive symptoms.

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.

The relationship between internet gaming disorder and psychotic experiences: cyberbullying and insomnia severity as mediators

BACKGROUND

The nature of the relationship between Internet Gaming Disorder (IGD) and psychosis is unclear so far. There is evidence that greater time spent in playing video games may expose players to both insomnia and a toxic online environment with widespread cyberbullying. These two possible consequences of IGD may, in turn, be associated with greater psychotic experiences (PE). Based on this theoretical framework, the present study proposed to contribute the body of the knowledge in this area, by testing the possible indirect effects of insomnia severity, cyber-victimization and cyberbullying in the cross-sectional association between IGD and PE in a sample of Tunisian university students.

METHOD

We conducted a cross-sectional study over 4 months (February-May 2022). The Arabic versions of the Brief Symptom Inventory, the Internet Gaming disorder-20 Test, the Insomnia Severity Index, and the Revised Cyber Bullying Inventory-II were administered to a total of 851 students (mean age = 21.26 ± 1.68 years, 53.7% females).

RESULTS

We found that 25% of students were at risk of IGD, and 1.8% had an IGD. The results of the mediation analysis showed that insomnia severity fully mediated the association between IGD and paranoid ideation. Higher IGD was significantly associated with more insomnia severity, which was, in turn, significantly associated with more paranoid ideation. Cyberbullying partly mediated the association between IGD and psychoticism. Higher IGD scores were significantly associated with more cyberbullying, which was, in turn, significantly associated with more psychoticism. Finally, greater IGD was significantly and directly associated with higher psychoticism.

CONCLUSION

Our findings suggest that insomnia and cyberbullying may be regarded as potential targets for youth mental health promotion, as well as community-focused prevention and early intervention in psychosis. More particular attention should be devoted to the huge potential for engaging in cyberbullying among online gamers. Sleep deprivation should be prevented, assessed and treated in heavy gamers.

Development and preliminary validation of the Postpartum Psychotic Experiences Scale (PPES)

Despite the emerging research interest in postpartum psychotic experiences, there is still a lack of measures for specifically measuring this construct. The contribution of this paper is to design and validate a novel self-report measure, the Postpartum Psychotic Experiences Scale (PPES), to screen for attenuated psychotic symptoms during postpartum. This cross-sectional study was conducted from September 2022 until June 2023, enrolling 438 women 4-6 weeks after delivery. Starting from an initial pool of 22 items, both Exploratory Factor Analysis and Confirmatory Factor Analysis suggested that remaining 15 items loaded on one factor (α = 0.95). The PPES showed good convergent validity with the Prodromal Questionnaire-Brief scale (correlations >0.8) and good concurrent validity with postpartum depression and anxiety scales. A PPSE score of 8.5 (sensitivity=85.2%, specificity=78.6%) was defined as the optimal cutoff point. At this cutoff, 47% of participating women were considered at possible risk for postpartum psychosis. This study provides, for the first time, a specific self-report measure to assess postpartum PEs reliably and validly. We hope that the PPES will facilitate routine screening for PEs after childbirth among women who are predisposed to developing postpartum psychosis.

Sexual orientation and psychotic-like experiences among Chinese college students: the role of gender

Objective

The mental health of sexual minorities has received increasing attention, but there are few studies on the risk of psychotic-like experiences (PLEs) among sexual minorities. The purpose of this study is to explore the relationship between different sexual orientations and PLEs among college students and the moderating effect of gender.

Methods

A total of 4,460 college students from seven provinces participated in this cross-sectional survey. The χ2 test and logistic regression were used to investigate the relationship between sexual orientation and PLEs.

Results

Of the participants, 4.9% identified as bisexual, 1.1% as lesbian/gay, and 5.6% were questioning/unsure; 60.1% of the sample experienced at least one PLE item, 59.2% reported delusional experiences (DEs), and 20.6% had hallucinatory experiences (HEs). Compared with heterosexual college students, bisexual and questioning students showed a higher risk of PLEs, DEs, and HEs, and lesbian/gay students showed a higher risk of HEs. Stratified analysis indicated that sexual orientation was significantly associated with PLEs only for female college students.

Conclusion

Sexual orientation is a predictive factor of PLEs. In particular, different sexual minority subgroups show the different effects on PLEs between male and female college students. Mental health interventions for PLEs could employ distinct strategies based on different sexual orientations and gender disparity.

Suicide risk among individuals at Ultra-High Risk (UHR) of psychosis in a developing North African country: A 12-month naturalistic prospective cohort study from the TRIP project

BACKGROUND

The limited studies that focused on suicidality in individuals at Ultra-High Risk (UHR) of psychosis were predominantly cross-sectional, emerging from Western countries. We aimed to examine suicide risk among Tunisian UHR and First Episode Psychosis (FEP) patients at baseline, and to evaluate the evolution and correlates of suicidal ideation over a 12-month period in the UHR group exclusively.

METHODS

35 UHR (aged 22.8 ± 4.0 years, 45.7% male) and 33 FEP (aged 27.3 ± 4.8 years, 63.6% male) participants were included. The Comprehensive Assessment of at Risk Mental States, the Positive and Negative Syndrome Scale (PANSS), The Rosenberg Self-Esteem Scale, and The Multidimensional Scale of Perceived Social Support were used.

RESULTS

No significant differences were found between the UHR and the FEP groups with regard to levels of suicidal ideation at baseline. Suicidal ideation scores showed a significant decrease over time in UHR participants (p=.014; η2=0.242). An increase in total PANSS scores at 1 year (Beta=0.03; p=.048; 95%CI 0.001, 0.060; η2=0.182) significantly increased suicidal ideation scores at 1 year in the UHR group.

CONCLUSION

Our findings contribute to the limited body of evidence on this topic by providing new prospective data from a population, country and region that has never been researched previously.

Insomnia and distress as mediators on the relationship from cyber-victimization to self-reported psychotic experiences: a binational study from Tunisia and Lebanon

BACKGROUND

While expansive research has accumulated concerning the association between traditional, face-to-face peer victimization and psychosis, a paucity of empirical research has been undertaken so far to investigate these associations with experiences of new and evolving ways of victimization through the digital world. Exploring these associations is highly relevant and timely, given that emerging adults are heavy users of digital technologies, highly exposed to online risks, and are at the peak age of onset of psychosis. This study aimed to test the hypothesis that psychological distress and insomnia symptoms have a significant indirect mediating effect on the association between cyber-victimization and self-reported positive psychotic experiences (SRPEs) in a binational sample of Tunisian and Lebanese community adults.

METHOD

The total sample was composed of 3766 participants; 3103 were from Lebanon (Mean age: 21.73 ± 3.80 years, 63.6% females) and 663 from Tunisia (Mean age: 26.32 ± 4.86 years, 59.9% females). Online anonymous self-report questionnaires were administered to all participants.

RESULTS

Higher SRPEs were found in Lebanese participants compared to Tunisians, in single participants compared to married ones, in those with a university level of education compared to secondary or less, in those who live in rural areas compared to urban, in those who do not smoke, do not drink alcohol and do not use marijuana or any other illegal drug. Furthermore, more cyber-victimization, a higher insomnia severity and psychological distress were significantly associated with higher SRPEs. After adjusting for potential confounders, mediation analysis demonstrated that higher cyber-victimization was significantly associated with more insomnia severity/psychological distress; which were, in turn, significantly associated with greater SRPEs. Finally, more cyber-victimization was significantly and directly associated with more positive dimension.

CONCLUSION

Identifying insomnia and distress as mediators could provide novel insight for psychosis prevention efforts and intervention targets for cyber-victimized individuals prone to experience subclinical psychotic symptoms.

Problematic Smartphone Use Mediates the Pathway from Suicidal Ideation to Positive Psychotic Experiences: a Large Cross-Sectional, Population-Based Study

The present study followed the newly hypothesized "suicidal drive for psychosis" suggesting that psychosis may be consequential to suicidal ideation (SI) and behavior and attempted to explain parts of the pathway between these variables. To this end, we aimed to test whether problematic smartphone use (PSU) has an indirect mediating effect in the cross-sectional relationship between SI and positive psychotic experiences (PEs). Lebanese community young adults (N=4158; 64.4% females; mean age 21.91±3.79) have been invited to participate to a cross-sectional, web-based study in the period from June to September 2022. After adjusting for potential confounders (i.e., the living situation, marital status, household crowding index, economic pressure, cannabis use, other drugs use, and past history of mental illness other than psychosis), we found that higher levels of suicidal ideation was significantly associated with greater PSU, which was also positively and significantly associated with more positive PEs. Finally, greater suicidal ideation was significantly and directly associated with more positive PEs. Our findings suggest that SPU may be regarded as a potential target for prevention and intervention in psychosis. Clinicians, educators, and school administrators ought to give greater attention to PSU among vulnerable young people who present with SI.

Attitudes and beliefs of Tunisian High-School teachers about schizophrenia: The impact of vignette gender

BACKGROUND

Teachers have a crucial active role in provision of mental health services to students and fighting against mental health stigma in schools, hence their attitudes and beliefs toward mental illness should be assessed.

METHOD

We carried-out a cross-sectional study with a non-probabilistic sample of 304 higher secondary school teachers. We used a structured questionnaire in which a vignette describing an individual with schizophrenia was presented, and was followed by a series of stigma-related questions.

RESULTS

A substantial proportion of teachers endorsed stressful life events (79.6%) as a cause of schizophrenia, elicited feelings of discomfort (41.4%) and incomprehension (41.1%) with the person displaying symptoms of schizophrenia, and agreed that the person's condition will deteriorate even more (45.4%). Teachers perceived that the person described in the vignette is dependent on others, lacks will, is different from others and is unpredictable in 65.1%, 59.2%, 55.6%, and 49.7% of cases, respectively. In addition, 38.5% and 34.2% of teachers recommended turning to traditional healers and to a Sheikh or an imam of a mosque, respectively. Regarding gender effects, females with schizophrenia were regarded as more likely to be unable to make her own decisions and to be dependent on others than males, and were less likely to be recommended for seeking help from a family physician or to consult a psychiatric hospital than males.

CONCLUSION

In the light of our findings, raising awareness of teachers of the impact of mental health issues on students should be prioritized in high schools in Tunisia.

Prevalence and risk factors of self-reported psychotic experiences among high school and college students: A systematic review, meta-analysis, and meta-regression

BACKGROUND

Adolescents are at high risk of incident psychopathology. Fleeting psychotic experiences (PEs) that emerge in young people in response to stress may be warning signs that are missed by research that fails to study stressed populations, such as late high school and college/university students. Our aim in this systematic review was to conduct a meta-analysis that estimates prevalence rates of PEs in students, and to assess whether these rates differ by gender, age, culture, and COVID-19 exposure.

METHOD

We searched nine electronic databases, from their inception until January 31, 2022 for relevant studies. We pooled the estimates using the DerSimonian-Laird technique and random-effects meta-analysis. Our main outcome was the prevalence of self-reported PEs in high school and college/university students. We subsequently analyzed our data by age, gender, population, country, culture, evaluation tool, and COVID-19 exposure.

RESULTS

Out of 486 studies retrieved, a total of 59 independent studies met inclusion criteria reporting 210' 024 students from 21 different countries. Nearly one in four students (23.31%; 95% CI 18.41%-29.05%), reported having experienced PEs (heterogeneity [Q = 22,698.23 (62), p = 0.001] τ²  = 1.4418 [1.0415-2.1391], τ = 1.2007 [1.0205-1.4626], I²  = 99.7%, H = 19.13 [18.59-19.69]). The 95% prediction intervals were 04.01%-68.85%. Subgroup analyses showed that the pooled prevalence differed significantly by population, culture, and COVID-19 exposure.

CONCLUSION

This meta-analysis revealed high prevalence rates of self-reported PEs among teen and young adult students, which may have significance for mental health screening in school settings. An important realization is that PEs may have very different mental health meaning in different cultures.

Link between childhood trauma and psychotic-like experiences in non-affected siblings of schizophrenia patients: A case-control study

AIM

Prior research has consistently demonstrated a relationship between childhood trauma (CT) exposure and an increased risk of developing psychotic-like experiences (PLE) and disorders. Studying the link between CT and PLE in non-clinical populations with or without genetic risk factors could help elucidate the etiopathogeny of psychotic disorders, by removing the effect of confounding variables related to psychotic-spectrum illnesses.

METHOD

A total of 60 non-affected siblings of patients with schizophrenia and 75 controls (aged 18-35 years) participated in a cross-sectional survey. The Positive Subscale of Community Assessment of Psychotic Experiences (CAPE) and the CT Questionnaire were used.

RESULTS

We found no significant difference with regard to positive dimension of the CAPE between the two groups. Siblings have reported higher CAPE negative symptoms scores than controls (27.9 vs 24.2; P = .015), and more emotional abuse and physical neglect during childhood than controls. After controlling for demographic and psychosocial variables, sexual abuse, emotional neglect and physical neglect were positively related to positive psychotic symptoms in the control group, whereas no dimension of CT has been linked to these symptoms in the sibling group.

CONCLUSION

The link between CT and psychosis seems to be complex, not only dependent on genetic vulnerability or early environmental factors shared by siblings of patients with psychotic disorders, but also several other confounding factors, including other psychopathological symptoms. Prevention strategies for individuals at genetic risk of psychosis should pay particular attention to CT as a potential predictor of sub-clinical depression and psychosis.

Knowledge, attitude and behaviours toward mental illness and help-seeking in a large nonclinical Tunisian student sample

BACKGROUND

Mental disorders are widespread among students. However, mental health help-seeking remains low. Several reviews and meta-analyses have shown that the main barrier to seeking help from mental health professionals is stigma. This paper aimed to assess stigma in a sample of students, and its association with help-seeking intentions and comfort with disclosing a mental illness.

METHOD

The 'Community Attitudes toward the Mentally Ill', the 'Mental Health Knowledge Schedule', and the 'Reported and Intended Behaviour Scale' were administered to a total of 714 college students (62.2% female; mean age = 20.9).

RESULTS

We found that 43.8% of students agreed that one of the main causes of mental illness is a lack of self-discipline and willpower, 21.9% did not consider depression as a mental illness, and 39.6% felt that they would be 'unlikely' or 'very unlikely' to seek the help of a health professional for mental health problems. Females had higher scores in help-seeking intentions (p < .001) and knowledge of mental illness (p = .019). Students' age negatively correlated with knowledge (p < .001, r = -.147). Pearson correlations indicated that help-seeking intentions positively correlated with more favourable future intentions of being in contact with a person with a mental illness (p < .001, r = .103) and greater mental health knowledge (p < .001, r = .163); and that comfort with disclosing significantly and negatively correlated with attitudes (p < .001, r = -.125).

CONCLUSION

To date, few young people see mental health professionals as a preferred source of support, and action is needed to change this perception or reform mental health services to make them more attractive to this age group.

The Multivariable Multiaxial Suggestibility Inventory-2 (MMSI-2): A Psychometric Alternative to Measure and Explain Supernatural Experiences

This paper presents the English adaptation of the Multivariable Multiaxial Suggestibility Inventory-2 (MMSI-2), a questionnaire developed specifically for psychological assessment and prediction of anomalous phenomena. The sample consisted of 613 respondents from England (47.6% were women and 52.4% men). All of them were of legal age (mean = 34.5; standard deviation = 8.15). An exploratory factor analysis was applied, and three confirmatory factor models were adjusted. Omega coefficients and test-retest designs were used for reliability analysis. The MMSI-2 has a valid internal structure consisting of five macrofactors: Clinical Personality Tendencies (CPT), Anomalous Perceived Phenomena (APP), Incoherent Manipulations (IMA), Altered States of Consciousness (ASC), and Openness (OP). Omega coefficients for CPT and OP factors were low but acceptable. Furthermore, test-retest trials were excellent for all scales and factors. The psychological factors CPT, IMA, and ASC predicted 18.3% of the variance of anomalous experiences (APP). The authors concluded the English MMSI-2 was a valid and reliable test for the evaluation of anomalous phenomena but recommend that subsequent research reviews the predictive quality of the underlying model.