The Development of Mental Health Difficulties in Young People With and Without Developmental Language Disorder: A Gene-Environment Interplay Study Using Polygenic Scores

The effectiveness of language nursing intervention on mental health in children with poor language skills

BACKGROUND

Mental health issues in adulthood often start in childhood, so it's important to identify these issues early and find ways to manage them. To our knowledge, no study was found that evaluated the long-term effects of language nursing intervention on mental health in children with poor language skills. This study, therefore, aimed to evaluate the long-term impact of a language nursing intervention on the mental health of children with poor language skills.

METHODS

We estimated poor language skills prevalence in 3-4-year-old children who were planning to enter kindergartens in Hunan, China. After selecting these children, we divided them into two experimental and control groups. The experimental group received a nursing intervention related to language skills for eight months. After eight months, the language skills of both groups were re-evaluated. Then, in the follow-up evaluation, the mental health of these children was evaluated at the ages of 9-10 years. Univariate and multivariate regression models adjusted with sampling weights were used to estimate the correlation of mental health and risk factors.

RESULTS

The language skills of the experimental group increased significantly compared to before the protocol (from 87.4±10.87 to 98.08±7.13; p = 0.001). At the end of the eight-month nursing intervention, the language skills of the experimental group were significantly higher than the control group (98.08±7.13 in experimental group and 87.51±9.59 in control group; p = 0.001). In multivariate analysis, single-parent family and not participating in the nursing protocol related to language skills at the age of 3-4 years were related to high symptoms of depression, anxiety and stress symptoms (single-parent family: for depression symptoms, OR = 1.28, 95% CI = 0.88-1.42; for stress symptoms, OR = 1.31, 95% CI = 0.79-2.74 and for anxiety symptoms, OR = 1.42, 95% CI = 0.97-2.44; not participating in the nursing protocol related to language skills at the age of 3-4 years: for depression symptoms, OR = 2.98, 95% CI = 1.80-5.19; for stress symptoms, OR = 1.88, 95% CI = 1.23-2.01 and for anxiety symptoms, OR = 2.67, 95% CI = 1.51-3.77; p<0.05).

CONCLUSION

The current study showed the effectiveness of this intervention on both language skills and mental health of children with poor language skills.

Concurrent and longitudinal associations of developmental language disorder with peer victimization in adolescence: evidence from a co-twin study

BACKGROUND

Children with developmental language disorder (DLD) experience higher levels of peer victimization than their peers. However, it is not known if such associations reflect genetic and environmental confounding. We used a co-twin control design to investigate the association of language difficulties (DLD and separately poor pragmatic language) with peer victimization and compare the developmental trajectories of peer victimization across adolescence for those with and without language difficulties.

METHODS

Participants were 3,400 pairs of twins in the Twins Early Development Study (TEDS), a UK-based population birth cohort. Language abilities were assessed via online tests at age 11 and peer victimization was self-reported at ages 11, 14 and 16. Language difficulties were defined as language abilities at least -1.25 SD below the mean of the TEDS sample. We performed linear regressions and latent growth curve modeling at a population level and within monozygotic and same-sex dizygotic twin pairs.

RESULTS

At population level, youth with DLD experienced higher levels of peer victimization at ages 11 (β = 0.27, 95% Confidence Interval (CI) 0.20-0.35), 14 (β = 0.15, 95% CI 0.03-0.27) and 16 (β = 0.17, 95% CI 0.03-0.32) and a sharper decline in peer victimization between ages 11 and 16 compared to their peers without DLD. The associations between DLD and peer victimization were reduced in strength and not statistically significant in within-twin models. Moreover, there was no difference in the rate of change in peer victimization between twin pairs discordant for DLD. Results were similar for the association of poor pragmatic language with peer victimization.

CONCLUSIONS

Associations between language difficulties (DLD and separately, poor pragmatic language) and peer victimization were confounded by genetic and shared environmental factors. Identifying specific factors underlying these associations is important for guiding future work to reduce peer victimization among adolescents with language difficulties.

Theory of affective pragmatics under biolinguistics

This paper introduces a pioneering investigation into affective pragmatics through the perspective of Darwinian Biolinguistics, an interdisciplinary field at the nexus of biological and linguistic principles. Anchored in Darwin's theory of evolution and the latest developments in neurobiology, this study delves into the influence of biological factors---especially those pertaining to the brain's emotional processing on pragmatic communication. The research posits that human emotional responses, inherent in our biological constitution, profoundly influence the usage and interpretation of language in social interactions.

Genetic influences on sibling bullying and mental health difficulties

BACKGROUND

Sibling bullying is associated with mental health difficulties; both in the short and long term. It is commonly assumed that sibling bullying leads to mental health difficulties but additional explanations for the relationship between the two are seldom investigated.

METHODS

To address this gap in knowledge, we used a genetically sensitive design with data from the Avon Longitudinal Study of Parents and Children (maximum N = 3,959, 53% female). At ages 11-13 years, individuals self-reported their involvement in sibling bullying, as a victim and perpetrator, and parents reported on their child's mental health difficulties. Polygenic scores, indices of genetic risk for psychiatric disorders (major depressive disorder and attention deficit hyperactivity disorder) were computed using children's genetic data. Regression and structural equation models were fitted to the data.

RESULTS

Sibling bullying, victimisation and perpetration, and polygenic scores both predicted mental health difficulties in an additive manner but there was no interaction between them. Polygenic scores for mental health difficulties were also associated with sibling bullying.

CONCLUSIONS

These findings suggest that sibling bullying, victimisation and perpetration, is associated with mental health difficulties, even after accounting for some genetic effects. Additionally, the relationship between sibling bullying and mental health difficulties may be, at least partly, due to shared genetic aetiology. One possibility is that genetic risk for mental health difficulties influences the onset of mental health difficulties which in turn make children more susceptible to sibling bullying.

Exploring self-reported quality of life in developmental language disorder

Purpose

Developmental language disorder (DLD) is a lifelong condition associated with poorer outcomes than neurotypical peers, yet relatively little is known about long-term quality of life in DLD. This preliminary study adopts a neurodiversity-informed approach by exploring self-reported quality of life in an adolescent and young adult DLD sample, as well as linguistic and risk factors contributing to quality of life.

Method

Participants were five individuals with DLD aged 12-20 years (M = 15.60; SD = 3.05). I administered two self-report quality of life scales, a language assessment, an experimental morphosyntax task, and measures of risk factors. Data were analyzed descriptively.

Results

Participants generally reported positive views about their quality of life, though accessing accommodations and health services emerged as barriers. Relatively better grammaticality judgement performance appeared to be linked with poorer ratings of happiness and the ability to 'be yourself.' Nonverbal ability represented a potential risk factor, though there may be a stronger cumulative role for risk factors.

Conclusions

DLD participants reported relatively good quality of life. Exploratory findings suggest barriers to quality of life in some contexts, as well as roles for individual differences in language and risk factors. These descriptive findings should be examined in larger scale studies and may represent areas of consideration when clinicians address functional challenges that impact mental health and wellbeing in individuals with DLD.

Innovative Family-Based Genetically Informed Series of Analyses of Whole-Exome Data Supports Likely Inheritance for Grammar in Children with Specific Language Impairment

Individuals with specific language impairment (SLI) struggle with language acquisition despite average non-verbal intelligence and otherwise typical development. One SLI account focuses on grammar acquisition delay. The current study aimed to detect novel rare genetic variants associated with performance on a grammar assessment, the Test of Early Grammatical Impairment (TEGI), in English-speaking children. The TEGI was selected due to its sensitivity and specificity, consistently high heritability estimates, and its absence from all but one molecular genetic study. We performed whole exome sequencing (WES) in eight families with SLI (n = 74 total) and follow-up Sanger sequencing in additional unrelated probands (n = 146). We prioritized rare exonic variants shared by individuals with low TEGI performance (n = 34) from at least two families under two filtering workflows: (1) novel and (2) previously reported candidate genes. Candidate variants were observed on six new genes (PDHA2, PCDHB3, FURIN, NOL6, IQGAP3, and BAHCC1), and two genes previously reported for overall language ability (GLI3 and FLNB). We specifically suggest PCDHB3, a protocadherin gene, and NOL6 are critical for ribosome synthesis, as they are important targets of SLI investigation. The proposed SLI candidate genes associated with TEGI performance emphasize the utility of precise phenotyping and family-based genetic study.