Questionnaire methodology & limitations
An original self-reflection questionnaire for adults (18+). It has not been independently clinically validated. It cannot diagnose ADHD, identify a subtype, or estimate your likelihood of having ADHD.
What this tool is
Open ADHD offers an original 18-question reflection on attention, restlessness, impulsivity, emotions and time. It is not the official ASRS and has not been independently clinically validated. References to ADHD research do not validate this questionnaire.
How answers are summarized
Each answer describes frequency over the past six months. Results count how many items in each category you answered Often or Very often. These are descriptive counts, not diagnostic cutoffs or severity levels. No ADHD probability or subtype is calculated.
Earlier results
Earlier versions displayed a total percentage, indication bands and inferred subtypes. Those interpretations were not clinically validated. Older entries remain available as historical records, but their labels are no longer presented as clinical conclusions.
What a professional evaluation adds
A qualified clinician considers developmental history, effects across settings, and other possible explanations. This questionnaire cannot confirm or rule out ADHD. You can seek help whenever difficulties affect your life, whatever your answers.
Versions and translations
The result format introduced on 8 September 2026 is reflection-v2. Question translations are project translations, not validated ASRS translations. GAD-7 and PHQ-9 are separate screening tools; original sleep, executive-function and rejection-sensitivity self-checks are educational reflections.