Comprehensive
ADHD Evaluations
Children & Adults
Greenville · Simpsonville · Spartanburg · Remote Nationwide
Multi-method ADHD testing grounded in DSM-5 diagnostic criteria, Conners Performance Testing, Cognifiti cognitive battery, and structured clinical interview — delivering a legally defensible diagnosis and personalized treatment roadmap for children and adults in Upstate SC and anywhere in the US.
What is ADHD? More than distraction — a neurodevelopmental condition.
ADHD (Attention-Deficit/Hyperactivity Disorder) is a neurodevelopmental condition affecting executive function, attention regulation, impulse control, and working memory in both children and adults. It is one of the most misunderstood and underdiagnosed conditions seen in clinical practice — and an accurate, multi-method ADHD assessment is the single most important step toward effective treatment. At BrainFit Studio in Greenville, SC, we provide the gold-standard evaluation your child or your own situation deserves.
- Difficulty sustaining attention on tasks or activities
- Impulsive decision-making or difficulty waiting
- Hyperactivity or inner restlessness in adults
- Disorganization, missed deadlines, poor time management
- Hyperfocus on high-interest tasks despite global inattention
- Emotional dysregulation, low frustration tolerance
- Frequent forgetfulness in daily activities
- Difficulty following through on instructions or multi-step tasks
diagnosed with ADHD
meet ADHD criteria
per DSM-5
goes undiagnosed
Our ADHD assessment battery:
Four validated methods.
BrainFit Studio uses a multi-method ADHD assessment model that cross-references four evidence-based tools: DSM-5 diagnostic criteria, Conners Continuous Performance Testing (CPT-3), the Cognifiti cognitive test battery, and a structured Psychological Diagnostic Interview. This approach meets the highest clinical and legal standards — and produces results that schools, prescribers, and testing organizations accept.
DSM-5 Diagnostic Criteria
The foundation of every assessment. We systematically evaluate all 18 DSM-5 ADHD symptom criteria across inattentive and hyperactive-impulsive presentations, establishing clinical significance, cross-situational impairment, and developmental onset before age 12.
- Full symptom count across both DSM-5 clusters
- Determines presentation: Inattentive, Hyperactive-Impulsive, or Combined
- Documents functional impairment in academic, occupational, and social settings
- Rules out symptoms better explained by mood, anxiety, or trauma
Conners Performance Tests
Conners' Continuous Performance Tests (CPT & CPT-3) are objective, normed performance measures that capture real-time attentional functioning — not just reported symptoms. They detect inattention, impulsivity, and vigilance decrements with precision.
- Continuous Performance Test — sustained attention over time
- Response variability, commission errors, and reaction time analysis
- Age and gender-normed scores for children, adolescents, and adults
- Provides data that cannot be faked or coached
Cognifiti Test Battery
The Cognifiti digital cognitive test battery measures multiple neurocognitive domains — working memory, processing speed, cognitive flexibility, and executive function — providing objective, quantified data about how the brain performs under standardized conditions.
- Working memory and executive function profiling
- Processing speed and cognitive efficiency scores
- Attention and inhibition domain scoring
- Normative comparisons to identify clinically significant deficits
Psychological Diagnostic Interview
No standardized test replaces a skilled clinical interview. Dr. McKeithan's structured Psychological Diagnostic Interview gathers detailed developmental history, symptom onset, functional impairment across settings, comorbid conditions, and family history — providing the clinical context that numbers alone cannot capture.
- Developmental and educational history review
- Symptom onset, severity, and cross-situational pattern
- Screening for comorbid anxiety, depression, trauma, and learning differences
- Family psychiatric history and prior treatment review
What to expect from your ADHD evaluation.
Our ADHD assessment process is thorough, efficient, and typically completed across one to two appointments. You'll receive a complete written report with diagnostic conclusions, a cognitive profile, and a personalized treatment roadmap — not just a diagnosis code.
Your ADHD assessment includes — everything you need.
Every BrainFit Studio ADHD evaluation concludes with a comprehensive written psychological report, a cognitive profile, and a clear roadmap for treatment — suitable for schools, universities, prescribers, and testing accommodation organizations.
ADHD testing for every age group.
ADHD presents differently across the lifespan — from hyperactive children struggling in class to adults who've quietly compensated for years. If you're wondering whether you or your child might have ADHD, a proper evaluation is the only way to know for certain. BrainFit Studio offers ADHD testing for children, teens, college students, and adults — in Greenville SC, Simpsonville SC, Spartanburg SC, and remotely anywhere in the United States.
Common questions about ADHD testing answered.
Get your ADHD evaluation scheduled today.
Comprehensive ADHD assessments in Greenville, Simpsonville & Spartanburg SC — and remote ADHD testing available anywhere in the United States. Children, adolescents, and adults welcome.
Schedule Your AssessmentBrainFit Studio provides comprehensive ADHD assessments and ADHD testing in Greenville, SC, Simpsonville, SC, Spartanburg, SC, and throughout Upstate South Carolina. Remote ADHD evaluations are also available to clients anywhere in the United States via telehealth. Our ADHD evaluation battery is conducted by Dr. Matthew McKeithan, PsyD, a licensed Clinical Psychologist, and includes four validated methods: DSM-5 diagnostic criteria evaluation, Conners Continuous Performance Test (CPT-3), the Cognifiti cognitive test battery, and a structured Psychological Diagnostic Interview.
We assess children (ages 6+), adolescents, college students, and adults. Our written assessment reports are accepted by schools for IEP and 504 Plan requests, universities for disability accommodations, and standardized testing organizations including the SAT, ACT, GRE, LSAT, and MCAT. Assessment data can also be integrated directly into a custom neurofeedback training protocol for clients who want to treat the deficits identified.
If you are searching for ADHD testing near me, ADHD assessment Greenville SC, ADHD testing Simpsonville SC, child ADHD evaluation Spartanburg, adult ADHD testing online, remote ADHD assessment, ADHD testing for college accommodations, Conners CPT ADHD test, or psychological evaluation for ADHD near Greenville — BrainFit Studio is here to help.
About BrainFit Studio ADHD Assessments
BrainFit Studio is a clinical psychology and neurofeedback practice in Simpsonville, South Carolina, owned and operated by Dr. Matthew McKeithan, PsyD — a licensed Clinical Psychologist, combat veteran, and Service-Disabled Veteran-Owned business owner. The practice is also a VA Community Care Network (CCN) Provider, making it a qualified provider of services to veterans referred through the VA system in Region 3.
ADHD assessments at BrainFit Studio follow a multi-method protocol that is consistent with best-practice guidelines from the American Psychological Association (APA) and the American Academy of Pediatrics (AAP). The battery includes: (1) a structured Psychological Diagnostic Interview covering developmental, educational, occupational, and psychiatric history; (2) systematic DSM-5 symptom evaluation across all 18 ADHD criteria in both the Inattentive and Hyperactive-Impulsive presentations; (3) objective performance testing using the Conners Continuous Performance Test (CPT-3), a widely validated tool for measuring sustained attention, impulsivity, and vigilance; and (4) the Cognifiti digital cognitive test battery, which assesses working memory, processing speed, executive function, and cognitive flexibility using normative comparisons.
This multi-method approach is specifically designed to address the limitations of single-method or brief ADHD screenings — which frequently result in false positives or false negatives. The resulting written psychological evaluation report meets the documentation standards required by public and private schools (IEP/504), colleges and universities (disability services), standardized testing organizations (College Board, ETS, LSAC, NBME), and prescribing clinicians. BrainFit Studio offers both in-person ADHD assessments at its Simpsonville SC office serving the Greenville-Spartanburg metro area, and remote ADHD evaluations available to clients in any U.S. state via HIPAA-compliant telehealth.
Get In Touch
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