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Updated: Oct 18, 2025

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Impulsive and Omission Errors: Potential Temporal Processing Endophenotypes in ADHD.

Johan E Acosta-López1, Isabel Suárez2, David A Pineda3

  • 1Facultad de Ciencias Jurídicas y Sociales, Universidad Simón Bolívar, Barranquilla 080005, Colombia.

Brain Sciences
|September 28, 2021
PubMed
Summary
This summary is machine-generated.

Omission and commission errors in temporal processing show significant heritability, serving as potential endophenotypes for attention deficit hyperactivity disorder (ADHD). These measures aid in understanding ADHD

Keywords:
ADHDCaribbean communityendophenotypesgeneticsheritabilityprecision medicinereaction timetemporal processing

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Genetics

Background:

  • Temporal processing (TP) is crucial for cognitive functions and is impaired in attention deficit hyperactivity disorder (ADHD).
  • Understanding the genetic basis of ADHD through endophenotypes is vital for diagnosis and treatment.
  • Caribbean families provide a unique population for genetic studies of ADHD.

Purpose of the Study:

  • To evaluate temporal processing (TP) measures as potential endophenotypes in individuals with ADHD.
  • To assess the heritability of TP measures in families with ADHD.
  • To develop a predictive model for ADHD diagnosis using TP endophenotypes.

Main Methods:

  • Recruited 232 individuals from Caribbean families with ADHD probands.
  • Administered a comprehensive battery of neuropsychological and reaction time (RT)-based tasks.
  • Estimated heritability of TP measures and developed a predictive diagnostic framework.

Main Results:

  • Individuals with ADHD showed deficits in neuropsychological tasks (mental control, memory, fluency).
  • TP measures (RT, errors, variability) were affected in ADHD.
  • Only omission and commission errors demonstrated significant heritability.

Conclusions:

  • Omission and commission errors are identified as potential temporal processing endophenotypes for ADHD.
  • These endophenotypes can help elucidate the neurobiological and genetic underpinnings of ADHD.
  • A predictive model using these endophenotypes achieved high accuracy for ADHD diagnosis, supporting clinical utility.