Peer-reviewed article
Identifying Unique Subgroups of Emotional and Behavioral Presentations in a Large Inpatient and Community Sample of Autistic Youth.
Safaa Eldeeb, Jessie Northrup, Caitlin Conner, Shalini Sivathasan, Ligia Antezana et al. ·
Summary
Written by AI, not yet AICS's view · claude-haiku-4-5-20251001This study analyzed data from over 1,300 autistic children aged 6-17 to identify distinct subgroups based on their emotional and behavioral profiles. Using statistical clustering analysis on parent-reported information about emotion dysregulation and behavior problems, researchers found four different groups: one with widespread challenges, one dominated by emotional reactivity, one with mainly internalizing problems, and one with minimal difficulties. Family factors like income, household structure, and parental mental health were associated with which group children belonged to.
Key points
- Four distinct subgroups of autistic youth identified: Global High (22%), High-Reactivity Dominant (41%), Moderate-Internalizing Dominant (18%), and Global Low (19%)
- Emotional reactivity and aggression were the strongest features distinguishing between subgroups
- No significant differences found across subgroups by age, sex, race, or ethnicity
- Children in groups with greater emotional and behavioral challenges were more likely to live in lower-income households, single-parent families, and have family histories of psychiatric conditions
- Study combined data from both inpatient (clinical) and community samples of autistic youth
Limitations
The study relies on parent-reported measures only and does not include clinical assessment or direct observation of children. The findings are cross-sectional and cannot establish whether family factors cause the emotional and behavioral differences or result from them.
Abstract
Autistic youth exhibit wide variability in emotional and behavioral challenges, yet few studies have identified meaningful subgroups based on these profiles. This study applied a random forests ensemble clustering algorithm to item-level parent-report data from the Emotion Dysregulation Inventory (EDI) and the Child Behavior Checklist (CBCL) in a combined sample of 1311 autistic youth (ages 6-17), drawn from the Autism Inpatient Collection (n = 446) and the Interactive Autism Network (n = 865). Four distinct subgroups emerged: Global High (GH; 22%), characterized by elevated scores across all four subscales (EDI-Reactivity, EDI-Dysphoria, CBCL Internalizing, and CBCL Externalizing); High-Reactivity Dominant (H-RD; 41%), marked primarily by high emotional reactivity; Moderate-Internalizing Dominant (M-ID; 18%), with elevated internalizing scores; and Global Low (GL; 19%), showing uniformly low scores. Feature importance analyses identified EDI-Reactivity and CBCL Aggression items as the strongest drivers of subgroup membership. No significant differences were found across subgroups in age, sex, race, or ethnicity. However, subgroups with greater emotional and behavioral challenges were associated with lower household income, single-parent status, and higher rates of family psychiatric history. These findings suggest that emotional reactivity and aggression severity are key differentiating features among autistic youth, and that sociodemographic and family mental health factors meaningfully shape emotional and behavioral outcomes.