Eye-Tracking Studies in Adults with Autism Spectrum Disorder: A Systematic Review and Meta-analysis.
Level 3 - non-randomized controlled study
Systematic review and meta-analysis of non-randomized observational/case-control studies
PubMed 35355174 · doi:10.1007/s10803-022-05524-z
What was done
The authors conducted a systematic review and meta-analysis of eye-tracking studies comparing adults with autism spectrum disorder (ASD) to non-ASD controls. They analyzed 22 included studies to evaluate which regions of interest, eye-tracking metrics, and task paradigms best discriminate between ASD and non-ASD adults.
What was found
No numerical effect sizes, test statistics, or confidence intervals are reported in the abstract. Qualitatively, fixation duration on eyes and non-social regions best discriminated between ASD and non-ASD adults. Group differences were reduced during active tasks regardless of emotional content, whereas proportional fixation duration on eyes and non-social areas during non-active tasks (such as free viewing) provided the best sensitivity and specificity.
Why it matters
This review identifies optimal task designs—specifically passive free-viewing measuring fixation duration on eye and non-social regions—to maximize diagnostic discrimination in adult autism research.
Limits
The abstract reports no numerical data, effect sizes, precision measures, or participant counts. The included literature consists of observational case-control eye-tracking designs with potential heterogeneity in paradigms and hardware.
Cited by
- supports Individuals who score higher on autistic trait measures or have an autism diagnosis make less eye contact during social interaction tasks.