Your Child's Baseline Test Might Be Invalid — and Here's Why That Matters

Here’s an uncomfortable truth that most baseline testing providers won’t tell you: a significant percentage of youth baseline tests produce invalid results. And an invalid baseline may actually be worse than having no baseline at all.

The problem isn’t the tests. It’s how they’re run.

The problem isn’t the tests themselves. It’s how they’re administered. Picture the typical scenario: thirty student-athletes packed into a school computer lab on a Tuesday afternoon. The room is loud. Someone’s phone keeps buzzing. The kid next to your child is tapping their pencil. Half the athletes stayed up late studying for an exam, and the other half just finished conditioning.

In that environment, your child’s “baseline” isn’t capturing their healthy brain function. It’s capturing their distracted, fatigued, overstimulated brain function. Research published in the Journal of Athletic Training (Moser et al., 2011) found that testing environment significantly affects baseline scores — group-administered tests in uncontrolled settings produce lower and more variable results than individually supervised testing.

Why “better than baseline” can get a concussed kid cleared

Here’s the danger: when a concussed athlete later takes the same test in a quiet clinic while genuinely trying, their post-injury scores might actually look betterthan their noisy-gym baseline. The result? A concussed athlete gets cleared because their scores “improved.” A 2022 study in Applied Neuropsychology: Child confirmed that invalid baseline performance on ImPACT is common in high school athletes and can lead to incorrect clinical decisions.

ImPACT includes embedded validity indicators that flag potentially unreliable baselines — detecting patterns consistent with low effort, random responding, or abnormally slow processing speed. Research published by Schatz and Glatts (2013) in the Archives of Clinical Neuropsychology found that retesting athletes with invalid initial baselines produces significantly improved scores, confirming the original was a bad test, not a bad brain.

What good looks like

This is why testing conditions matter enormously. The Journal of Athletic Training recommends that baseline tests be administered with no more than 2–4 athletes in a quiet, supervised environment. The testing space should be free from distractions, phones should be collected, and athletes should be rested — not immediately post-workout.

At Headquarters, we control for every variable that compromises baseline quality:

• Quiet, supervised environments with small groups — or self-administered at home in a quiet space.
• Screening for fatigue, illness, and recent exercise before the athlete starts.
• Validity-indicator review on every result before it enters our system.
• Automatic retest when a result is flagged — because an inaccurate baseline is a liability, not a safety net.

Questions to ask any provider

Before your next baseline testing event, ask the provider:

• How many athletes will be tested at once?
• What’s the testing environment like?
• What happens if the result is flagged as potentially invalid?
• Are validity indicators reviewed by a clinician?

If the answers don’t satisfy you, find a provider who takes data quality as seriously as we do. For the deeper context, read our pillar guide on what baseline concussion testing actually is and our comparison of HQ Baseline vs. ImPACT vs. Sway.

Frequently asked questions