Thirteen tests, among them established questionnaires such as the PHQ-9 (depression), GAD-7 (anxiety) and ASRS (ADHD). Each takes between 2 and 30 minutes. No account, and your answers never leave your browser. You see the result at once and can print it or save it as a PDF. A screening gives an indication; it is not a diagnosis.
The ADHD screening combines the published ASRS v1.1 with a childhood scale based on the WURS-K. The IQ test and the character profile are our own instruments: they follow established models (CHC, Dark Tetrad), are not clinically validated and give an orientation only.
Structured self-report based on the ASRS v1.1 (WHO) for current symptoms, combined with a childhood scale based on the WURS-K for the retrospective assessment of childhood symptoms — in line with the current standard of adult ADHD diagnostics under DSM-5-TR and ICD-11.
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Performance test with items from the four central domains of the CHC model: fluid intelligence (matrices), crystallised intelligence (verbal analogies), quantitative reasoning (number series) and visual-spatial reasoning. The result is an estimate on the standard IQ scale (M = 100, SD = 15) with a 95% confidence interval.
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An in-house instrument along the Dark Tetrad: the Narcissist, the Manipulator, the Psychopath and the Provocateur. Everyone carries something of all four traits — the test shows in colour which one stands out in you. Descriptive rather than evaluative: the labels are deliberately direct, complemented by strengths, behavioural examples and concrete tips.
Start test →Each instrument follows the wording of its original manual; items, cutoffs and interpretation correspond to the published standards (DSM-5-TR, ICD-11, NICE, USPSTF).
Depression, anxiety, bipolar spectrum
The most widely used self-rating for generalised anxiety. Also sensitive to panic disorder and social phobia.
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Screening for lifetime manic/hypomanic symptoms. Three-criteria algorithm.
Start test →Stress-related disorders, OCD, disordered eating
Gold-standard self-rating for post-traumatic stress disorder. 20 items across all four DSM-5 clusters.
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Dimensional assessment of obsessive-compulsive symptoms in six areas (washing, checking, ordering, obsessing, hoarding, neutralising).
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The world's most widely used self-screener for disordered eating. Three subscales (dieting, bulimia, oral control).
Start test →Alcohol screening, autism spectrum
WHO standard for alcohol screening. Captures hazardous, harmful and dependent drinking.
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Original version of the Autism Spectrum Quotient with five subscales — a differentiated functional profile for adult diagnostics.
Start test →Dimensional description instead of pathology
Current full version of the Big Five model with five domains and 15 facets. T-scores against a German normative sample (N > 4,600).
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Full version of the transdiagnostic standard measure of health-related functioning and participation — six ICF domains with individual profiles.
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Items, scales and cutoffs are those of the published instruments and their current validations.
Three things to know before you rely on a result.
If you are currently under severe strain or in a mental health crisis, help is available around the clock — free of charge and confidential:
The instruments offered here are screening tools. They provide indications of clinically relevant symptoms or of your individual performance or personality profile, but they are no substitute for a specialist medical, psychological or psychiatric diagnosis. A confirmed diagnosis requires a structured clinical interview, a detailed history and, where appropriate, further psychometric testing.
All tests run entirely in your browser. Your answers are never sent to us or to anyone else: there is no account, no database and no logging of answers. So that you can pause a test or return to your result, the answers are kept in this browser tab only. They are gone when you close the tab, or at once with "Delete previous answers and restart" on the test page. Printing and PDF export happen on your device.
All results are provided without warranty. If your result is concerning or your symptoms persist, please contact a specialist medical or psychotherapeutic practice.
brainScreener is the free, global English edition of adhsiq.ch — a beautiful, carefully built Swiss screening project. Thank you for letting us build on your work. brainScreener is part of brainonbnb.com ($BOBAI) and, like everything we ship, completely free: no registration, no ads, no data collection.
