Sibling relationship quality and psychosocial outcomes among adult siblings of individuals with autism spectrum disorder and individuals with intellectual disability without autism

Siblings of Persons with Disabilities: A Systematic Integrative Review of the Empirical Literature

The systematic review aimed to systematize the empirical literature on the psychological impact of disability on the siblings of persons with disabilities, to inform research and provide clinical recommendations. Two research questions addressed the review: (1) What are the main psychological constructs investigated in siblings of persons with disability? (2) What is the main role of each psychological construct in siblings of persons with disability experience? The electronic search was conducted in 7 databases and the PRISMA diagram was used. The inclusion criteria were: Papers published in English and in peer-reviewed journals; papers published between January 2014 and June 2024; qualitative, quantitative, and mixed studies; and papers on the psychological impact of disabilities and/or chronic illnesses on the experience of siblings of persons with disabilities. The standardized Mixed Method Appraisal Tool protocol was used to appraise the methodological quality of the studies. To summarize the findings, a narrative approach was adopted. A total of 60 studies have been reviewed. According to the methodological quality appraisal of studies, most of them reported a high (n = 45) and medium (n = 15) quality. They involved 10,146 participants. Findings revealed that sibling relationships, sibling-focused parentification, and emotional/behavioral adjustment are the main psychological constructs investigated by existing literature. Few studies focused on siblings' well-being. Studies exploring more than a psychological construct were included as a hybrid. Only one study examined the siblings' psychological experience during the COVID-19 pandemic. The quality of the sibling relationship ranged from good to poor; the caregiver is the main role played by siblings of persons with disabilities; anxiety, depression, and aggressive behaviors are the main emotional/behavioral symptoms revealed. Most studies (n = 39) recruited participants with brothers or sisters with mental disorders. The findings of this systematic review may play a role in the clinical field, as they might help to design gender- and age-specific intervention programs.

Close Relationships Despite the Challenges: Sibling Relationships and Autism

This study explores the experiences of siblings of autistic adolescents within families. Without the novel insights generated from engaging with siblings of autistic adolescents within a qualitative framework, it can be challenging to develop strategies for practicing effectively with this group or structuring interventions with these families. Using a social constructivist approach and qualitative participatory methodology, the exploratory study was conducted using in-depth interviews with ten non-autistic siblings, analyzed via a thematic analysis method. The results reveal a common feeling of uncertainty and apprehension in the relationships, leading siblings to physical and emotional detachment from their autistic brothers or sisters. The research emphasizes the caregiving roles predominantly taken up by sisters, especially when the autistic sibling is a brother with intellectual disability. These roles exert substantial demands, with unclear boundaries suggesting potential role confusion. The findings have important implications for family practice, necessitating the need to address role conflict and promote role clarity. They also underscore the gendered nature of caregiving, advocating for support to sister-siblings in these roles. This study revealed the complexities of sibling relationships in families with a member who is an autistic adolescent sibling. The study suggests interventions that promote open family dialogues for a balanced approach to family roles, providing valuable guidance to practitioners to enhance siblings and family well-being.

Alexithymia, intolerance to uncertainty and mental health difficulties in adolescents with Type 1 diabetes mellitus

BACKGROUND

Type 1 Diabetes Mellitus (T1DM) represents a serious chronic condition affecting a wide number of people. Discussion of the physical issues associated with T1DM pervades the literature, however, there is less discussion of the psychological consequences. Mental health difficulties, alexithymia and uncertainty are present in this population, and known to be harmful for the onset, maintenance and worsening of T1DM. This study aimed to evaluate the presence of these phenomena in people with T1DM.

METHODS

105 participants aged between 11 and 17 years old (M: 13.88; SD: 2.16) affected by T1DM were included in the sample. To assess the presence of mental health difficulties, SAFA scales (Depression, Anxiety and Somatic symptoms) were included in the protocol together with TAS-20 and IUS-12, which evaluate the presence and role of alexithymia and intolerance to uncertainty in the sample, respectively.

RESULTS

A concerning presence of anxiety, depression and somatic symptoms was found in the sample. Mental health difficulties appeared to be consistently present in the sample, often overcoming pathological thesholds. Alexithymia and uncertainty were also common, highlighting their role in T1DM.

CONCLUSIONS

Active mental health difficulties together with high rates of alexithymia and intolerance to uncertainty were prevalent in the sample of adolescents with diabetes.

Sibling Relationships in Families of Autistic and Typical Children: Similarities and Differences in the Perspectives of Siblings and Mothers

This study investigates mothers' and siblings' perspectives regarding similarities and differences in siblingships with and without autism. Twenty-nine typical children (Mage = 8.78 years, SD = 2.05) whose younger siblings have a diagnosis of autism and their mothers constituted the 'autism group.' Forty-six typical children (Mage = 9.12 years, SD = 2.06) with younger typical siblings and their mothers constituted the 'typical group'. Children and mothers completed the Sibling Relationship Questionnaires and were interviewed. Children's reports illustrated similarities in sibling relationships across groups, with no between-group differences in overall warmth, conflict, rivalry, or relative power in the sibling relationship. Mothers of autistic children reported their children to have less warmth and closeness (F(1,72) = 5.63, p = .02, η2 = .073) and less conflict (F(1,72) = 6.66, p = .012, η2 = .085) with their siblings than mothers of typical children. More disagreement was found between mothers and children in the autism group than in the typical group. Mothers and children reported less intimacy and less quarreling between the siblings in the autism group than in the typical group. The qualitative analysis suggests that siblings focused on the present experience, while mothers also referred to processes in the sibling relationship. Interviewees in the autism group referred to various specificities in the siblingships without explicitly using the term "autism". The findings highlight a typical-like experience for siblings of autistic children. At the same time, mothers' perspectives emphasize differences and challenges in siblingships, reporting a pattern of decreased involvement. It is important to consider both perspectives in research and clinical work with families of autistic children.

Subjective Poverty Moderates the Association Between Carer Status and Psychological Outcomes of Adult Siblings of People with Intellectual and Developmental Disabilities

Adult siblings are potentially important sources of care, support, advocacy, and friendship for their brothers and sisters with intellectual and developmental disabilities (IDD). Drawing on data about 851 adult siblings who completed an online national survey, we examined predictors and potential key moderators of siblings' mental distress, wellbeing, quality of life, and health outcomes. Moderated regression analyses indicated that siblings experiencing higher levels of subjective poverty; siblings with brothers and sisters with lower levels of independence; and siblings who are carers and also experiencing low levels of subjective poverty, had worse outcomes and may be in need of specific supports. Compared to normative samples, adult siblings of people with IDD had worse outcomes across the measures.

The Quality of Life among Siblings of Autistic Individuals: A Scoping Review

Autism spectrum disorders are a heterogeneous group of neurodevelopmental disorders presenting at a tender age, defined by qualitative deficits in social interactions and communication, thus having a substantial influence on the subject's family unit. Quality of life (QoL) refers to a person's perspective of their life situation, cultural and value background, objectives, expectations, and standards. When focusing on childhood and adolescence, age-related changes should be considered. For this scoping review, the authors used three peer-review literature database sources (PubMed/MEDLINE, Scopus, and ERIC) to delve deeper into components of the QoL of non-autistic siblings of autistic individuals. At the completion of the eligibility phase, 9 studies were included out of the 96 initial records. A total of 4/9 articles (45%) compared the non-autistic siblings of autistic individuals to the siblings of non-autistic people, while 3/9 articles (33%) compared the first group to the non-autistic siblings of patients with other chronic diseases. A total of 5/9 studies adopted specific questionnaires to evaluate QoL. Results from 6/9 articles revealed that the autism condition has varying effects on non-autistic siblings' QoL. According to the considered research, non-autistic siblings of autistic individuals experienced decreased psychological well-being, less perceived social support, increased aggressiveness and conflict-proneness, and higher levels of anxiety and stress impacting their QoL. The present findings provide important implications for additional and more punctual studies in this sector. Furthermore, as being a non-autistic sibling of an autistic individual is commonly undervalued, this review advocates the need to organize and improve support services for siblings.

Lived Experiences of Siblings of Individuals with Autism Spectrum Disorder in India: An Interpretative Phenomenological Analysis

BACKGROUND

Autism spectrum disorder (ASD) can impact the individual and their families. The impact on siblings is unique because they evolve from being another child in the family to a future adult who can be a potential resource to the family in supporting a member with ASD. Since the quality of care and support can be affected by the lived experiences of the carer and there are not many studies on siblings, this study examined the lived experiences of siblings of individuals with ASD.

METHODS

Fourteen siblings of individuals with ASD, aged 15-36 years, were recruited from a tertiary hospital, schools, and private institutes. A semistructured interview schedule was used to explore the lived experiences. Interpretative phenomenological analysis (IPA) was used to identify the themes.

RESULTS

The themes based on IPA indicated that the siblings have very basic concerns like understanding the condition and complex issues such as coping, preparing for current and future roles, personal needs and expectations, need for a support system, and positive aspects of the sibling relationship. Nonetheless, the siblings minimized reporting their difficulties and focused more on the needs of the sibling with ASD.

CONCLUSION

Siblings have diverse lived experiences, with a small element of positive experiences. Appropriate supports are needed to address the complexities of the lived experiences.

Sibling Adjustment and Sibling Relationships Associated with Clusters of Needs in Children with Autism: A Novel Methodological Approach

We tested a novel methodological approach to examine associations between characteristics of autistic children and outcomes for siblings. Cluster analysis was used to define five groups of children with autism (n = 168) based on autism symptoms, adaptive behavior, pro-social behavior, and behavior problems. Primary and secondary parent carers, and siblings themselves, reported on sibling relationship quality and psychological adjustment. Siblings of autistic children with a mild symptom profile, high levels of adaptive skills, but high internalizing and externalizing problems had the highest level of these problems themselves and more conflict in their relationship. Siblings of autistic children with the most complex support needs (adaptive skills deficits, severe autism symptoms) reported lower warmth relationships but not elevated internalizing and externalizing problems.

Children and young people's experiences of having a sibling with complex health needs: a literature review

Children with complex health needs require significant healthcare input for one or more conditions. Much of the literature on the effects of living with children with complex heath needs focuses on parents, and there is little research into the effects on siblings. This article reports on a literature review that examined the experiences of siblings growing up with a brother or sister with complex health needs and how this affects their lives. Three main themes were identified: emotional experiences; coping strategies and support; and family life. The findings identified in relation to mixed emotions, coping strategies and support systems are similar to those of studies of siblings of autistic children and children with cancer. However, in most countries the provision and availability of support for this group of siblings is inadequate.

General Cognitive Abilities and Psychosocial Development in Children and Adolescents Having a Co-Twin with Down Syndrome

OBJECTIVE

To examine the general cognitive and psychosocial development in children and adolescents having a co-twin with Down syndrome.

STUDY DESIGN

A case control study with an individually matched control group was conducted. Participants included families with twins discordant for Down syndrome as well as with typically developing twins. The group of unaffected co-twins aged 4-16 years was compared with a control group of typically developing twins in terms of general cognitive abilities, behavioral problems, and prosocial behavior. The age and sex and the sex composition of the twins were individually matched. The Sijnders-Oomen nonverbal intelligence test was applied to assess children's IQ, and parents completed the Strength and Difficulties Questionnaire.

RESULTS

The unaffected co-twins did not differ from typically developing twins with respect to their IQ. Concerning the psychosocial development, significantly heightened values in unaffected co-twins twins were only obtained for the conduct problems scale (P = .01; r = 0.45), neither for the total difficulties score nor for the other behavioral problem scales significant differences were found.

CONCLUSIONS

The general cognitive development of the unaffected co-twin of children with Down syndrome is not affected by the presence of their Down syndrome twin. Unaffected co-twins showed increased conduct problems, which is most pronounced in the younger children.

Exploring the experiences of siblings of adults with intellectual/developmental disabilities during the COVID-19 pandemic

BACKGROUND

The COVID-19 pandemic has caused many adults with intellectual/developmental disabilities (IDD) to lose their daily routines and social support, and as a result, many adults with IDD are increasingly reliant on their family caregivers. Siblings often play a crucial support role for their brothers and sisters with IDD. As such, this study aimed to describe the experiences of adult siblings of people with IDD during the COVID-19 pandemic.

METHODS

The Sibling Collaborative worked with researchers to codesign an online survey, completed by 91 people, exploring sibling supports and concerns during the COVID-19 pandemic. The survey also aimed to identify helpful resources for siblings during this time.

RESULTS

The results showed that the majority of siblings are supporting their brother or sister with IDD during the COVID-19 pandemic and are concerned about the health and well-being of their brother/sister. The most common concern related to disruption of their brother's or sister's routine and activities. Although responses of older and younger siblings did not differ from each other, siblings whose brother or sister with IDD lived with family had some unique concerns relative to those whose siblings no longer lived with family. Siblings described how their own self-care and relationships with others, as well as support for their brother/sister, were particularly helpful during the COVID-19 pandemic.

CONCLUSIONS

Siblings are providing key support to their brother or sister with IDD during the COVID-19 pandemic, and they too must be supported. Siblings should be included in efforts to disseminate resources targeting people with IDD and their feedback and input must be obtained. It is also important to include sibling mental wellness as caregiver supports are created and implemented. More research is needed to further understand how to support sibling caregivers.

A novel missense mutation in the UBE2A gene causes intellectual disability in the large X-linked family

BACKGROUND

X-linked intellectual disability type Nascimento (XIDTN) is a disorder of the ubiquitin-proteasome pathway of protein degradation controlled by the UBE2A gene. The disease is characterized by intellectual disability, speech impairment, dysmorphic facial features, skin and nail anomalies, and, frequently, seizures. Eight affected males from a four-generation family who have intellectual disability and speech disorders were examined within an extended family of 57 individuals. Methods A number of methods were used for the molecular diagnosis. Conventional karyotype analyses, array-based comparative genomic hybridization (aCGH), whole exome swquencing (WES), sanger sequencing were performed. Results First, the conventional karyotype analyses were normal, and the results of the aCGH analyses were normal. Then, WES revealed a novel missense mutation of the UBE2A gene at exon 4 NM_003336.3: c.182A>G (p.Glu61Gly). Seven affected individuals and nine carriers in the multigenerational, large family were diagnosed through Sanger sequencing.

CONCLUSIONS

We identified the mutation causing intellectual disability in the large family and demonstrated its phenotypic effects. Our cases showed that dysmorphic features could be considered mild, whereas intellectual disability and speech disorders are common features in XIDTN. The structure and function of the gene will be better understood in the novel UBE2A mutation. The genotype-phenotype correlation and phenotypic variations in XIDTN were identified through a literature review. Accordingly, XIDTN should be considered in individuals who exhibit an X-linked pedigree pattern and have intellectual disability and speech disorders.

Self-reported Health-Related Quality of Life (HRQOL) and Anxiety Among Greek School-Age Siblings of Individuals with Autism Spectrum Disorders (ASD) in Relation to Parental Mental Health and Social Support

Health-Related Quality of Life (HRQOL) and anxiety were measured in 233 school-age siblings of individuals with Autism Spectrum Disorders (ASD) and siblings of Typically Developing (TD) children in Greece. The aim of the study was to investigate for any association between siblings' HRQOL or anxiety and parental mental health, perceived social support as well as major demographic factors. It was found that the disability group (ASD-sibs) showed elevated anxiety levels and poorer HRQOL than controls. In hierarchical multiple regression models, the anxiety of ASD-sibs was significantly associated with parental anxiety independent of parental perceived social support and demographic factors, whereas the HRQOL of ASD-sibs was associated with perceived social support independent of parental physical and mental health and demographic factors.

Functioning Among Typically Developing Siblings of Individuals with Autism Spectrum Disorder: A Meta-Analysis

The literature on typically developing siblings of individuals with autism spectrum disorder (ASD-Sibs) provides inconsistent results, with some studies reporting ASD-Sibs are more likely to have negative outcomes than comparison groups, and others reporting no significant differences. Therefore, the purpose of this study was to meta-analytically aggregate study effect sizes to more accurately calculate the degree to which ASD-Sibs function similarly or differently compared to siblings of people who do not have ASD. Studies were eligible for inclusion if they had a sample of ASD-Sibs older than 5; reported on emotional, psychological, behavioral, or social functioning; and provided information necessary for calculating relevant effect sizes. Results from 69 independent samples indicated that ASD-Sibs have significantly more negative outcomes than comparison groups overall (g = - 0.26); specific areas of functioning in which ASD-Sibs fared worse include internalizing behavior problems, psychological functioning, beliefs, social functioning, and the sibling relationship, but no significant differences in adjustment, attention/hyperactivity, externalizing behavior problems, coping, or family functioning. Noteworthy sub-areas of functioning in which ASD-Sibs also fared worse included beliefs about disability (g = - 0.56), anxiety symptoms (g = - 0.25), and depression symptoms (g = - 0.36). In terms of comparison group, ASD-Sibs had significantly lower functioning than siblings of individuals with other intellectual and developmental disabilities (g = - 0.31), including Down syndrome (g = - 0.40) and siblings of individuals without any disabilities (g = - 0.31). Clinicians and service providers should work to ensure that ASD-Sibs are included in family interventions and support strategies, and researchers should further explore individual differences that may relate to enhanced or impaired functioning in ASD-Sibs.

Comparison of relationships among French adult siblings with or without schizophrenia using the ASRQ-S: mediating effect on emotional distress

BACKGROUND

Good sibling relationships in adulthood are known to be a protective factor for mental health. The present study examined and compared the relationships of siblings with either a healthy brother or sister or one experiencing schizophrenia.

METHODS

In the first phase, we ran a statistical comparison of the two sibling groups on the quality of their sibling relationships (warmth, conflict, and rivalry), emotional distress, and self-esteem. In the second phase, we looked at whether the quality of the sibling relationship modifies the impact of having a brother or sister with schizophrenia on emotional distress and self-esteem.

RESULTS

Results showed that sibling relationships in schizophrenia are less warm and are characterized by heightened rivalry and conflict. In addition, analysis revealed a mediating effect of sibling relationship on the emotional distress of siblings with a brother/sister diagnosed with schizophrenia.

CONCLUSION

More needs to be done to enhance the mental health of adults who have a brother or sister with schizophrenia, notably via their sibling relationships.

Adult siblings of people with and without intellectual and developmental disabilities: Sibling relationship attitudes and psychosocial outcomes

There is still little research on the relationships between adults with intellectual and developmental disabilities and their typically-developing siblings, despite the importance of these ties for siblings' psychological well-being, especially in terms of depression, anxiety, and life satisfaction. In this study, the sibling relationship attitudes of adult siblings of people with (N = 133) and without (N = 140) intellectual and developmental disabilities were explored. Feelings, behaviors, and thoughts related to sibling relationships were measured using the Lifespan Sibling Relationship Scale; depression was measured using the Beck Depression Inventory-II; anxiety was measured using the Beck Anxiety Inventory; and life satisfaction was measured using the Satisfaction With Life Scale. Results indicate that higher levels of positive sibling relationship attitudes are negatively related to levels of depression and anxiety, and positively related to levels of life satisfaction. Furthermore, adult siblings of people with intellectual and developmental disabilities show less positive sibling relationship attitudes, higher levels of depression and anxiety, and lower levels of life satisfaction. Finally, group membership, indirectly through sibling relationship attitudes, was related to depressive and anxious symptoms, as well as to life satisfaction. Implications for future research and policies are discussed.

Social Connections Among Siblings With and Without Intellectual Disability or Autism

Although the significance of sibling relationships is widely affirmed, little is known about these relationships in young adulthood. In this study, we examined the experiences and perspectives of 155 siblings (ages 18-30) of individuals with intellectual disability or autism. Our focus was on how young adults spend time with their brother or sister with a disability, the ways in which they view their relationship, and the expectations they hold for the future. We found that most siblings spent time together engaging in a wide range of activities, described their relationships as of high quality, and held varied expectations regarding their brother's or sister's future. Several factors were associated with more time spent together and higher quality relationships. We address implications for practice and suggest future directions for research.

Perspectives about adult sibling relationships: A dyadic analysis of siblings with and without intellectual and developmental disabilities

Most siblings of individuals with intellectual and developmental disabilities (IDD) report positive sibling relationships. However, extant research often only examines the perspective of the nondisabled sibling; it is unclear whether siblings with IDD report close sibling relationships. Thus, the aim of this study was to understand adult sibling relationships from the perspectives of both siblings with and without IDD. Using dyadic interviews, we examined the perspectives of eight adult sibling dyads. The study was conducted in the United States. Data were analyzed using constant comparative analysis and cross-case analysis to identify themes within and across dyads. Overall, siblings with and without IDD reported enjoying spending time with one another. However, siblings with and without Down syndrome (versus autism spectrum disorder) reported more reciprocal sibling relationships, more frequent contact, and a greater range of shared activities. Implications for future research and practice are discussed.

Adult Siblings Who Have a Brother or Sister with Autism: Between-Family and Within-Family Variations in Sibling Relationships

Prior research on the sibling relationship in the context of autism spectrum disorder (ASD) has included only one sibling per family. We used multi-level modeling to examine aspects of the sibling relationship in 207 adults who have a brother or sister with ASD from 125 families, investigating variability in sibling relationship quality and pessimism within and between families. We found that there was greater variability in aspects of the sibling relationship with the brother or sister with ASD within families than between families. Sibling individual-level factors were associated with positive affect in the sibling relationship, while family-level factors were associated with the sibling's pessimism about their brother or sister's future. The findings illustrate the unique experiences of siblings within families.

Engaging with and navigating limbo: Lived experiences of siblings of adults with autism spectrum disorders

BACKGROUND

Supporting an adult with autism spectrum disorder (ASD) can be associated with family stress but also with personal growth and resilience. Research providing insight into how typically developing siblings make sense of their unique sibling relationships in adulthood remains limited.

METHOD

Using interpretative phenomenological analysis, this study explored subjective experiences of eight siblings of adults with ASD and co-occurring intellectual disability.

RESULTS

Analysis of interview transcripts revealed a complex lived experience explained by the overarching theme "engaging with and navigating limbo", which was characterized by commitment to the sibling relationship, power tensions in the family, uncertainty about the future and negotiating the tension between relational closeness and distance.

CONCLUSION

Using family systems theory, overregulation and closed communication emerged as processes relevant to families living with ASD. Clinical opportunities to support family communication, change tolerance and belonging are discussed.

Relação Fraternal e Síndrome de Down: um Estudo Comparativo

Resumo: As relações fraternais em famílias com filhos com e sem síndrome de Down (SD) têm sido pouco investigadas no Brasil. Este estudo descreve o funcionamento familiar e compara a relação entre irmãos em dois tipos de famílias, identificando similaridades e diferenças nos relatos dos genitores. Participaram do estudo oito famílias compostas por mãe, pai e dois filhos, sendo que em quatro delas havia somente membros com desenvolvimento típico (DT) e nas demais havia um membro com SD, totalizando oito díades de irmãos, de ambos os sexos com idades entre cinco a 15 anos. Utilizou-se o Questionário de Caracterização do Sistema Familiar, que foi respondido pelas mães, e entrevistas semiestruturadas, cujos genitores responderam. Os resultados indicam similaridades na rotina diária das famílias, sendo as mães as principais responsáveis pelas tarefas domésticas e cuidados com os filhos, em ambos os tipos de famílias. As relações fraternais foram descritas, pelos pais e mães, como Mistas e Amistosas em ambos os tipos de famílias, caracterizando, portanto, como sendo positivas. O filho com DT foi indicado como líder na maioria das famílias com um membro com SD, enquanto nas famílias com as díades com DT, a maioria dos genitores indicou o filho mais velho. Os dados convergem com os da literatura acerca do fato de que a relação entre a díade de irmãos SD-DT tende a ser positiva, com características de amistosidade mais do que conflitos. Os dados encontrados sugerem coerência com os da literatura atual.

Siblings of Children with Autism: the Siblings Embedded Systems Framework

Purpose of Review

A range of interacting factors/mechanisms at the individual, family, and wider systems levels influences siblings living in families where one sibling has autism. We introduce the Sibling Embedded Systems Framework which aims to contextualise siblings’ experience and characterise the multiple and interacting factors influencing family and, in particular, sibling outcomes.

Recent Findings

Findings from studies that have reported outcomes for siblings of children with autism are equivocal, ranging from negative impact, no difference, to positive experience. This is likely due to the complex nature of understanding the sibling experience. We focus on particular elements of the framework and review recent novel literature to help guide future directions for research and practice including the influence of culture, methodological considerations, and wider participatory methods.

Summary

The Siblings Embedded System Framework can be used to understand interactive factors that affect sibling adjustment and to develop clinically, educationally and empirically based work that aims to enhance and support sibling adjustment, relationships, and well-being in families of children with autism.