Driving after pediatric traumatic brain injury: Impact of distraction and executive functioning.
Megan E Narad, Patrick Nalepka, Aimee E Miley and 3 others
PMID 32525341WHAT IT FOUND
A history of pediatric TBI did not independently worsen simulated driving.
Instead, executive functioning deficits drove poor vehicle control and speed variability. Texting impaired driving for all participants, while hands-free conversation did not.
Key findings
01Participants with a history of pediatric TBI did not show significantly poorer driving performance than controls when executive functioning was not considered.
02Executive functioning deficits were the primary predictor of poor driving, causing greater lane position variability and speed issues across all groups regardless of injury history.
03Texting while driving impaired performance for all participants, whereas hands-free phone conversation did not cause impairment and actually reduced lane variability for some.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The sample size was small (38 analyzed), and the study was underpowered to detect subtle group differences or complex interactions. Participants were already cleared for driving by their providers, likely excluding those with more severe cognitive or behavioral impairments, creating a 'high-functioning' bias. Executive functioning was measured by questionnaires (parent/self-report), which may not correlate strongly with actual performance-based cognitive tasks. The simulator environment was artificial and lacked real-world consequences, and the specific scenarios (suburban/urban) may not generalize to highway or adverse weather driving.
Declared interests
No specific funding sources or conflicts of interest were declared in the provided text.
The easy way to misread this
Do not conclude that adolescents with a history of TBI are safe to drive simply because they performed like controls. The study found that executive functioning deficits, which are common after TBI, were the true predictor of poor driving. Additionally, the participants were already cleared for driving, meaning the study excluded those with more severe impairments.