ADHD TESTING & EVALUATION
ADHD testing in St. Charles, Missouri
Comprehensive ADHD evaluations for children, teens, and adults near St. Charles, MO — by a dual-licensed clinical and school psychologist who understands how ADHD plays out in the classroom, at home, and beyond.
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Licensed Clinical Psychologist
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Aged 5 through adulthood
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Nationally Certified School Psychologist
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St. Charles & Surrounding Areas
About ADHD
1 in 9 Children in the US has been diagnosed with ADHD
50% Of adults with ADHD were not diagnosed as children
3 types Inattentive, Hyperactive, and Combined presentations
RECOGNIZING ADHD
Signs it may be time for an evaluation
ADHD looks different in every child — and it often looks different in girls than boys, in younger children than teens, and in school settings versus home. Many families wait years before seeking an evaluation, often because the signs don't fit the stereotypical picture of a hyperactive child bouncing off the walls.
If you're recognizing patterns in your child — or in yourself — a comprehensive evaluation can provide the clarity and direction your family needs.
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In Children & Teens
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Difficulty staying focused on tasks or schoolwork
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Frequently losing things — homework, belongings, track of time
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Impulsive decisions or blurting out answers
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Struggles to wait their turn or follow multi-step instructions
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Appears not to listen even when spoken to directly
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Difficulty starting or finishing tasks
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Excessive fidgeting, restlessness, or "always on the go"
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Poor organization and time management
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Emotional dysregulation — big reactions to small frustrations
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Teachers reporting the same concerns year after year
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In Adults
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Chronic difficulty meeting deadlines or staying organized
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Frequently forgetting appointments or commitments
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Starting many projects but rarely finishing them
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Racing thoughts or difficulty slowing the mind
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Hyperfocus on interesting tasks, near-impossible to focus on others
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Relationship strain from forgetfulness or impulsivity
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History of underachievement despite high intelligence
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Difficulty managing finances or household responsibilities
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Emotional sensitivity or quick to frustration
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Lifelong feeling of "trying harder than everyone else"
WHATS INCLUDED
A thorough evaluation — not a quick checklist
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Comprehensive ADHD Evaluation
Our ADHD assessment goes far beyond a brief rating scale. We build a complete picture of your child's or your own cognitive profile — understanding not just whether ADHD is present, but how it presents, what's driving it, and what support will actually help.
Clinical intake interview (approx. 1 hour)
Cognitive ability & processing speed test
Attention, memory, & working memory issues
Executive functioning assessment
Parent, teacher & self-report behavior scales
Mood & anxiety screening
Written report with diagnosis & recommendations
Feedback Session with Dr. McKinzie
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Screening for Co-Occurring Conditions
ADHD rarely travels alone. Our evaluation screens for anxiety, depression, learning disabilities, and mood disorders that frequently co-occur with ADHD — conditions that can look like ADHD, mask it, or make it significantly harder to treat if missed.
This is one of the most important reasons to choose a psychologist over a brief pediatric screening.
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School-Informed Recommendations
Dr. McKinzie's dual clinical and school psychology background means your report doesn't just diagnose — it translates directly into actionable recommendations for IEP or 504 accommodations, classroom strategies, and educational support that schools can actually implement depending on educational impact.
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Feedback & Next Steps
Once your report is ready, Dr. McKinzie meets with you to walk through findings in plain language — including any diagnosis, your child's cognitive strengths, and a clear, individualized roadmap for moving forward. You'll leave with answers, not more questions.
Dual-Licensed
Clinical Psychologist & Nationally Certified School Psychologist
WHY DR. MCKINZIE
Why choose a specialist for ADHD testing
Clinical + School Psychology — Both
Most psychologists are trained in one domain. Dr. McKinzie holds dual licensure as both a clinical psychologist and a nationally certified school psychologist — understanding ADHD as it manifests in the therapy room, the classroom, and at home. This is especially rare and especially useful for school-age children.
Reports Schools & Providers Can Use
A well-written evaluation report is one of the most powerful advocacy tools a family can have. Dr. McKinzie's reports are thorough, clearly written, and directly actionable — giving schools, pediatricians, and other providers exactly what they need to support your child.
Strengths-Based, Not Just Deficit-Focused
Dr. McKinzie's dual training as both a clinical and school psychologist means she understands the classroom as deeply as the therapy room — a rare and genuinely useful edge.
Serving St. Charles & Surrounding Areas
Conveniently located in Woodstone Plaza in St. Charles, MO — serving families from O'Fallon, St. Peters, Wentzville, Lake Saint Louis, and the greater St. Louis metro area. Telehealth evaluations available where appropriate.
WHO WE EVALUATE
ADHD testing for every age group
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Children
Early identification of ADHD in children can transform their school experience. We help families understand whether behavioral or attention challenges reflect ADHD, anxiety, developmental differences, or a combination — and what to do about it.
Play-Based Testing
Teacher Reports
IEP Support
13-17
Adolescents
Teen ADHD often looks different — especially in girls, who frequently present with inattentive symptoms that get missed for years. Our evaluation captures the full picture including academic impact, executive functioning, and emotional regulation.
Inattentive ADHD
504 Plans
College Testing Accommodations
18+
Adults
Many adults have struggled for years without understanding why. An adult ADHD evaluation provides answers, validates lifelong experiences, and opens doors to treatment, workplace accommodations, and a fundamentally different relationship with yourself.
Late Diagnosis
Co-Occurring Conditions
Workplace Accommodations
THE EVALUATION PROCESS
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Free Consultation
A no-pressure 15-minute call to talk through what's going on and whether an evaluation is the right fit. Come as you are — there's no wrong place to start.
Intake Interview
A 1-hour clinical interview with parents or the adult client to gather background history and develop a personalized testing plan. Can be completed in-person or virtually.
Testing Session
3–5 hours of 1:1 testing, often split across multiple days. Activities are age-appropriate with built-in breaks throughout. Parents complete rating scales during this time.
Feedback & Report
Within 2–4 weeks, Dr. McKinzie walks you through findings, the diagnosis, strengths profile, and specific recommendations for home, school, and beyond.