Linking cognitive flexibility, planning, and autistic traits: The mediating role of cognitive abilities.
IQ level changes how we read executive-function scores in autistic clients, so factor it into every assessment.
01Research in Context
What this study did
Anderle et al. (2025) asked a simple question. Does IQ change how we read executive-function scores in autistic kids?
They gave flexibility and planning tasks to children and teens with autism. They also collected parent and clinician ratings of social skills and repetitive behaviors.
Then they ran mediation stats. This shows whether IQ carries the effect from EF scores to social ratings.
What they found
IQ soaked up most of the link. Once IQ was in the model, EF scores no longer predicted clinician social-communication ratings.
The same did not hold for repetitive behaviors. EF did not predict those ratings even before IQ was added.
Bottom line: a child’s cognitive level changes how we interpret EF test results.
How this fits with other research
The finding lines up with Yu et al. (2021). They also showed that verbal skills mediate the EF-to-theory-of-mind path in autistic students.
It also echoes Fong et al. (2020). Parent-rated EF still predicted social competence after IQ was held constant. Different raters, different result.
Ko et al. (2024) seem to disagree. In preschoolers, EF alone explained over half of autism symptom variance. The key gap is age: EF may matter more before school, while IQ matters more after.
Why it matters
When you test EF, always note the child’s IQ band. A low score might reflect cognitive level, not poor flexibility. Adjust goals and reports so families get a fair picture of what the child can and cannot do.
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02At a glance
03Original abstract
Autistic children often face cognitive challenges, particularly in executive functions (EFs). Previous research has explored the relationship between EFs and autistic traits, including social abilities and restricted and repetitive behaviours (RRBs). While some consistencies emerge from ecologically valid ratings, results from performance-based measures and studies combining lab tasks with parent reports remain inconsistent. This study investigated associations between EFs and autistic traits, focusing on the mediating role of cognitive abilities. We assessed 110 autistic participants aged 4-17 years (33 with IQ <85; 77 with IQ ≥85) using a comprehensive neuropsychological battery, including the Weschler Intelligence Scale for Children (WISC-IV), performance-based EF tasks (WCST, TOL), clinician ratings (ADOS-2), and parent-reported measures (SRS-2). Results showed significant links between cognitive flexibility and clinician-observed RRBs, and between planning skills and parent-reported autistic traits. Notably, cognitive abilities mediated the relationships of cognitive flexibility and planning with clinician-rated social-communication skills. Lower IQ participants performed worse on most EF measures, except for errors in shifting and planning task timing. Clinicians reported lower social scores only in the lower IQ group. These findings reveal inconsistencies in convergence between performance-based EF measures and autistic traits from parent and clinician reports. Importantly, cognitive abilities play a significant role in clinical assessments of EF and socio-communication, highlighting the need for more sensitive and ecologically valid neuropsychological tools. Conversely, cognitive skills did not influence clinician-rated RRBs or parent reports, suggesting these behaviours may be independent of broader cognitive abilities.
Research in developmental disabilities, 2025 · doi:10.1016/j.ridd.2025.105136