What is the difference between ADHD-inattentive and ADHD-hyperactive types?
The short answer
DSM-5 describes three ADHD presentations: inattentive (formerly "ADD"), hyperactive-impulsive, and combined. Combined type is most common. Inattentive type is the most frequently missed — particularly in women and girls — because it presents without the disruptive hyperactivity that gets noticed in classrooms.
The data
| Feature | Inattentive | Hyperactive-impulsive |
|---|---|---|
| Core symptoms | Distractibility, forgetfulness, task-switching difficulty | Restlessness, interrupting, difficulty waiting |
| Visibility | Often quiet and unnoticed | Typically disruptive and noticed early |
| Gender pattern | More common presentation in females | More common presentation in males |
| Typical age of diagnosis | Often late — teens or adulthood | Often early — childhood |
| Main cognitive deficit | Working memory and sustained attention | Impulse control |
| CPT profile | High omission errors (missed targets) | High commission errors (false alarms) |
What it means for you
The Attention & Focus test tracks both omission and commission error patterns. Take it multiple times to see your error profile — consistent high omission errors point toward inattentive patterns; consistent commission errors toward impulsive patterns.
Medical disclaimer
This content is for educational purposes only and is not medical advice. Scores from online tests are not diagnostic - if you are concerned about symptoms such as memory loss, attention problems, or cognitive decline, consult a qualified clinician.
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Quick Answer
ADHD-inattentive (formerly ADD) presents primarily as difficulty focusing, forgetfulness, and disorganisation without hyperactivity. ADHD-hyperactive/impulsive presents as restlessness, interrupting, and difficulty waiting. Combined type (both) is most common. Inattentive type is more often missed in women and girls.
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