# ADHD sex differences found in only 4% of comparisons in a 12,000-child study

- Published: 2026-11-07 02:06 UTC
- Section: Life & Health › Neurotechnology
- Tags: ADHD gender differences, Vanderbilt University ADHD study, childhood ADHD symptoms, Clinical Psychological Science
- URL: https://realtech.media/news/rt-d2ce9b140cd45450900f8dbf_adhd_sex_differences/

**Researchers analyzed multi-year observational data and found that behavioral differences between boys and girls with ADHD are minor.**

![ADHD sex differences found in only 4% of comparisons in a 12,000-child study](https://realtech.media/media/2026/11/92b799bedbea6fad.jpg)
*Michelle Jarick, Alan Kingstone, Wikimedia Commons, CC BY 4.0*

A team led by psychologist Zheyue Peng from Vanderbilt University found that gender differences in attention-deficit/hyperactivity disorder (ADHD) manifestations are substantially smaller than widely assumed, according to lomazoma.com [1]. The researchers analyzed longitudinal datasets from a large United States cohort study published in Clinical Psychological Science, evaluating psychological features across repeated assessments [1].

## Statistical comparisons and cohort parameters

The study tracked nearly 12,000 children and adolescents who were initially nine or ten years old over a three-year observation period [1]. The dataset included self-reports alongside evaluations from parents and teachers covering ADHD manifestations, emotional regulation, aggression, anxiety, and suicidal ideation [1]. In addition to subjective reports, the methodology incorporated objective cognitive assessments, including structured attention and memory performance metrics [1].

Across 3,760 statistical comparisons examining externalizing problem behaviors between sexes, significant differences emerged in only 4 percent of the tests [1]. While boys scored marginally higher on average metrics, the authors characterized the overall disparities as minor [1]. Notably, teachers rated behavioral symptoms in boys as more conspicuous than those observed in girls [1].

## Diagnostic implications and sample limitations

The authors concluded that pronounced gender-specific divergences in ADHD presentations represent exceptions rather than standard patterns [1]. However, they emphasized that subtle variations should not be overlooked, as marginally less overt symptoms in girls could contribute to systemic underdiagnosis [1]. The investigators highlighted that clinical evaluation requires diagnostic tools sensitive to varied symptom expressions [1]. The researchers noted an observational constraint: the study cohort was drawn from a general population sample and did not consist exclusively of individuals with clinically confirmed ADHD diagnoses [1].

## Sources

1. [lomazoma.com](https://lomazoma.com/adhs-bei-jungen-und-maedchen-unterschiede-oft-kleiner-als-erwartet)

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Source: RealTech, realtech.media — https://realtech.media/news/rt-d2ce9b140cd45450900f8dbf_adhd_sex_differences/