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Purpose <p>Comprehension of syntactic language is facilitated by the executive function of Prefrontal Synthesis (PFS), defined as an ability to deliberately modify and juxtapose mental visuospatial objects. Autistic individuals often experience deficits in PFS. This study aimed to differentiate between two hypotheses regarding PFS acquisition. The first suggests a persistent, age-independent barrier that continuously hinders PFS development. The second proposes an age-dependent factor, such as a critical period for PFS acquisition. These hypotheses predict distinct learning trajectories: the first expects autistic individuals to exhibit a consistently slower PFS-learning rate across all ages, while the second predicts an initial learning rate comparable to neurotypical peers, followed by an early decline. </p> Methods <p> To test these predictions, we analyzed PFS development in 15,183 autistic and 138 neurotypical individuals aged 2 to 22 years using parent-reports.</p> Results <p>At age 2, both groups exhibited similar PFS-learning rates. In neurotypical individuals, this rate remained high until age 7. However, in autistic individuals, learning rates began to decline exponentially as early as 2.3 years, with an even earlier onset in those with severe autism. </p> Conclusion <p>These findings support the second hypothesis, suggesting that PFS deficits in autism may stem from an age-dependent factor, such as a shortened critical period.</p>

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Age-Dependent Process Governs Executive Function Disability in Autistic Children

  • 期刊论文

  • 发表日期：

    2025年11月19日

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  • Andrey Vyshedskiy,
  • Allegra Marsiglio,
  • Sahil Batham,
  • Alessandro Tagliavia,
  • Rohan Venkatesh,
  • Anel Tarakbay,
  • Sagar Mundhia,
  • Samarth Urs,
  • Edward Khokhlovich,
  • Eugene Pinsky

摘要

Purpose

Comprehension of syntactic language is facilitated by the executive function of Prefrontal Synthesis (PFS), defined as an ability to deliberately modify and juxtapose mental visuospatial objects. Autistic individuals often experience deficits in PFS. This study aimed to differentiate between two hypotheses regarding PFS acquisition. The first suggests a persistent, age-independent barrier that continuously hinders PFS development. The second proposes an age-dependent factor, such as a critical period for PFS acquisition. These hypotheses predict distinct learning trajectories: the first expects autistic individuals to exhibit a consistently slower PFS-learning rate across all ages, while the second predicts an initial learning rate comparable to neurotypical peers, followed by an early decline.

Methods

To test these predictions, we analyzed PFS development in 15,183 autistic and 138 neurotypical individuals aged 2 to 22 years using parent-reports.

Results

At age 2, both groups exhibited similar PFS-learning rates. In neurotypical individuals, this rate remained high until age 7. However, in autistic individuals, learning rates began to decline exponentially as early as 2.3 years, with an even earlier onset in those with severe autism.

Conclusion

These findings support the second hypothesis, suggesting that PFS deficits in autism may stem from an age-dependent factor, such as a shortened critical period.