Emerging adulthood is a time filled with instability, but disclosure within close egalitarian relationships such as siblings, friends, and romantic partners can help when coping with stress. The present study examines patterns of disclosure across these relationships, as well as specific associations between relationships with siblings and peers.…

Whether altered white matter microstructural property of autistic people also exists in non-autistic siblings is uncertain. The microstructures of a neural tract may not be consistent throughout the whole track. We assessed 38 cognitive-able autistic males (aged 15.8 ± 4.4 years), 39 non-autistic siblings (16.5 ± 5.7 years), and 78 age- and…

Background: Previous research suggests that children with or at risk of probable developmental coordination disorder (pDCD) activate different areas of the brain when performing certain motor skills compared with typically developing (TD) children. This study used functional near-infrared spectroscopy to compare prefrontal cortex (PFC) activity in…

Background: Adult siblings are important in the lives of individuals with profound intellectual disabilities, especially as parents age. However, little is known about the roles they assume. Method: We examined these roles among 58 participants from the Netherlands, who completed an online questionnaire. Results: Most participants (89.7%) assumed…

Background: As individuals with intellectual and developmental disabilities age, their siblings are more likely to assume caregiving responsibilities. However, little is known about experiences of East Asian siblings with respect to their caregiving and future-planning within their own country, as well as other East Asian countries. Methods: Using…

This paper presents credible and comparable evidence on intergenerational educational mobility in 53 developing countries using sibling correlation as a measure, and data from 230 waves of Demographic and Health Surveys. It is the first paper to provide estimates of sibling correlation in schooling for a large number of developing countries using…

The adult service system does not adequately meet the needs of autistic adults, prompting families to continue their supportive roles. Siblings frequently assume these roles when parents are no longer able to do so, often without preparation or planning. We received feedback on the proposed Siblings FORWARD (Focusing on Relationships, Well-being,…

Purpose: To compare the utility of single versus repeated autism screening in a sample at higher likelihood (HL) for ASD, following both screen positives and all screen negatives to diagnostic outcome. Methods: Using a prospective infant sibling design, the current study followed 135 toddlers at HL for ASD and conducted diagnostic evaluations on…

This paper contributes to the literature on the impact of early-life health on education by estimating the effect of genetic predisposition to a higher body mass index (BMI) on educational attainment and related outcomes. The identification strategy exploits the randomness in which genes one inherits from one's parents by estimating sibling fixed…

Neurodevelopmental conditions (NDC) are highly heritable. Obstetric complications (OC) have been studied as potential predictors for NDC, although results are inconsistent. Inconsistencies might be related to biases such as family confounders. While some studies using sibling and twin designs have examined the association between OC and NDC, this…

Humor is a central feature of close and intimate relationships in childhood. However, fundamental questions regarding the relationship between humor production, pretend play, and social understanding have been overlooked. In a selected subsample from a prospective longitudinal study of first-born children (N = 110, M age = 6.91 years, 46.4%…

Background: Siblings of adults with intellectual and developmental disabilities (IDD) often support their brothers and sisters through caregiving and guardianship. Methods: In this qualitative study, the knowledge and views of 10 adult siblings were explored. Results & Conclusions: The tripartite impact of limited knowledge of guardianship and…

Background: Understanding the positive qualities of individuals with intellectual and developmental disabilities can provide a much-needed counterpoint to deficit-based depictions of disability. Method: This study examined how 163 young adults (ages 18-30) viewed the strengths of their brothers and sisters with intellectual disability or autism…

Cross-lagged panel designs were used to examine longitudinal and potential (bi)directional relationships between primary caregiver reported sibling relationship quality and the behaviors of children with intellectual disability (n = 297) and their closest in age siblings. The behavioral and emotional problems of the child with intellectual…

Research Findings: Despite the fact that the universal two-child policy had a significant impact on family structure and parenting behaviors, there is still a paucity of study on the mechanisms underlying this policy's effects. This study explored the role of social competence and sibling presence in the relationship between maternal warmth and…