Assessment & Research

Development of a Conceptual Model of Loneliness in Verbal Autistic Adults Using Qualitative Content Analyses.

Schiltz et al. (2025) · Journal of autism and developmental disorders 2025
★ The Verdict

Ask verbal autistic adults about social exhaustion and feeling different—these two items capture loneliness that standard scales miss.

✓ Read this if BCBAs who run social-skills groups or mental-health screens with verbal autistic adults.
✗ Skip if Clinicians working only with non-speaking children or severe-problem behavior.

01Research in Context

01

What this study did

Hillary et al. (2025) talked with verbal autistic adults about feeling lonely.

They read every interview line-by-line and grouped similar ideas.

The goal was to build a new picture of what loneliness really means for this group.

02

What they found

Two new themes popped out that old checklists miss.

Social exhaustion—feeling worn out from people—mattered as much as missing people.

Feeling different, not just isolated, also drove loneliness.

03

How this fits with other research

Kovačič et al. (2020) showed autistic adults can report their own mind skills just fine.

Hillary’s team used that same trust in self-report to find hidden parts of loneliness.

Adams et al. (2021) linked poor social skill to trouble naming emotions in autistic kids.

Hillary shifts the lens: for adults, the hurt comes from feeling unlike others, not only from skill gaps.

04

Why it matters

Next time you assess social health, add two quick questions. Ask, “Do people tire you out?” and “Do you feel different from peers?” These items capture adult autistic loneliness better than standard scales. You can add them to intake forms today—no extra training needed.

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Add two open questions to your intake: “Does socializing tire you?” and “Do you feel different from others?”

02At a glance

Intervention
not applicable
Design
qualitative
Sample size
18
Population
autism spectrum disorder
Finding
not reported

03Original abstract

PURPOSE: Loneliness has serious consequences for physical and mental health. Therefore, the high vulnerability of autistic adults to loneliness is concerning (Hymas et al., in: Rev J Autism Dev Disord., 2022. https://doi.org/10.1007/s40489-022-00330-w ). However, foundational questions regarding the operationalization and importance of loneliness to the autistic community remain largely unanswered, and thus were the aims of the current study. METHODS: Procedures followed initial steps of the PROMIS (Patient-Reported Outcomes Measurement Information System) guidelines. A preliminary conceptual model of loneliness was developed based on literature in the general population and presented to focus groups and individual interviews involving 13 autistic adults and 5 autism professionals. Transcripts were analyzed using qualitative content analysis. RESULTS: Participants indicated that research on loneliness in autistic adults was worthwhile because of the commonality, significant negative impact, need to challenge misconceptions, and identify prevention/intervention strategies. Revisions to an initially proposed conceptual model of loneliness in autism included clarifications (e.g., satisfaction with vs. presence of relationships), modifications (e.g., frequency vs. availability of contact), and additions (e.g., social exhaustion, feelings of difference, and animals). CONCLUSION: Our proposed conceptual model of loneliness in autism identifies key nuances and concepts overlooked by models and measures of loneliness developed for non-autistic populations. These findings underscore the need to improve methods for assessing loneliness among autistic adults.

Journal of autism and developmental disorders, 2025 · doi:10.1111/pere.12397