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A comprehensive ADHD screening covering all three types — Inattentive, Hyperactive-Impulsive, and Combined. Instant results, no sign-up, no data stored.
Start Free ADHD Test ⚡Select the ADHD type you want to screen for, and your age group. You can also choose "All Types" for a full screening.
Step 1 — Select ADHD Type to Screen
Step 2 — Select Age Group
ADHD (Attention Deficit Hyperactivity Disorder) is one of the most common neurodevelopmental conditions in the world, affecting an estimated 5–10% of children and 2.5–4% of adults globally. Despite its name, ADHD is not simply about being hyperactive or unable to sit still — it is a complex condition that affects attention regulation, impulse control, executive function, and emotional processing.
ADHD is caused by differences in how the brain develops and functions, particularly in areas related to dopamine and norepinephrine regulation. It is a lifelong condition, though its presentation often changes with age. Many children who appear hyperactive develop more subtle inattentive symptoms as adults, leading to missed or late diagnoses.
💡 Did you know? Approximately 60–70% of children diagnosed with ADHD continue to experience significant symptoms into adulthood. Yet adult ADHD remains one of the most underdiagnosed mental health conditions worldwide.
According to the DSM-5, ADHD is classified into three presentations. Understanding which type best describes your experience is important for getting the right support:
1. ADHD – Predominantly Inattentive Type (formerly ADD)
This is the type most commonly missed in both children and adults. People with inattentive ADHD often appear calm or even "dreamy." Key traits include difficulty sustaining attention on tasks, frequently losing things, being easily distracted by unrelated thoughts, failing to finish tasks, and forgetting daily routines. Women and girls are significantly more likely to present with this type, which is why female ADHD is so often overlooked.
2. ADHD – Predominantly Hyperactive-Impulsive Type
This is the type most people picture when they think of ADHD. It involves excessive physical restlessness, difficulty staying seated, talking excessively, interrupting others, acting without thinking, and having difficulty waiting their turn. This presentation is more common in young boys and often becomes less physically obvious in adulthood, though internal restlessness typically persists.
3. ADHD – Combined Type
The most common presentation overall, Combined Type involves significant symptoms of both inattention and hyperactivity-impulsivity. Most adults with ADHD have the combined presentation. Our full screening test covers all symptoms of the combined type.
Adult ADHD looks quite different from childhood ADHD. Many adults with undiagnosed ADHD have spent years developing coping strategies — but these often come at great personal cost. Common adult ADHD symptoms include:
In children, ADHD symptoms must be present in at least two settings (e.g. home and school) and must be excessive for the child's developmental level. Common signs include:
ADHD in women and girls is significantly underdiagnosed, often by as much as a 3:1 ratio compared to men. This is largely because girls with ADHD are more likely to present with inattentive symptoms — daydreaming, disorganization, and emotional sensitivity — rather than the disruptive hyperactivity that prompts clinical referral in boys.
Women with ADHD often develop sophisticated masking strategies and internalize their struggles as personal failures ("I'm just lazy / stupid / disorganized"), leading to high rates of anxiety, depression, and low self-esteem before receiving a correct diagnosis. If you are a woman who has always struggled with organization, relationships, and self-management while appearing high-functioning on the outside, an ADHD screening is a meaningful first step.
ADHD rarely occurs in isolation. Research shows that up to 80% of people with ADHD have at least one co-occurring condition. The most common include:
🔗 ADHD & Autism: Research suggests 50–70% of autistic people also meet ADHD criteria. If you score high on this test, consider also taking our free Autism Test.
Receiving an ADHD diagnosis as an adult can be both overwhelming and deeply validating. It provides an explanation for decades of unexplained struggles and opens the door to effective treatment. ADHD treatment typically includes:
With the right support, most people with ADHD lead highly successful, fulfilling lives. Many famous innovators, entrepreneurs, and creatives have ADHD — the same traits that create challenges in structured environments often power exceptional creativity and drive.
Our free ADHD test is a 25-question educational screening tool. It is inspired by validated instruments including the Adult ADHD Self-Report Scale (ASRS-v1.1) developed by the WHO and the Conners' Rating Scales, but uses entirely original question content and is not a replacement for clinical assessment tools.
The test covers five domains: Attention & Focus, Hyperactivity, Impulsivity, Executive Function, and Emotional Regulation. You can choose to screen for Inattentive Type, Hyperactive-Impulsive Type, or the full Combined Type screening. Separate question sets are available for children (parent-completed) and adults/teens (self-report).
ADHD commonly co-occurs with autism and other conditions. A broader picture helps.