Autism Traits Test
A 20-question screener for autistic traits in adults: social life, communication, focus, routine and the senses.
Free to answer20 questions 5 min
Understand how your mind works.
Short, research-informed questionnaires on autism traits, ADHD traits and personality. Answer every question for free, then choose how you want to see your full report.
Explore our testsSelf-discovery
Ever wondered why your mind works the way it does?
Some things come easily. Others take everything you have.
ADHD Traits Test
An 18-question screener for adult ADHD traits, covering inattention, hyperactivity and impulsivity.
Free to answer18 questions 5 min
Anxiety Test (GAD-7)
The 7-question GAD-7, the anxiety questionnaire doctors use most, covering the past two weeks.
Free to answer7 questions 3 min
Depression Test (PHQ-8)
The 8-question PHQ-8, a widely used depression questionnaire, covering the past two weeks.
Free to answer8 questions 3 min
Attachment Style Test
A 12-question test of how you approach closeness and trust in relationships, based on the two dimensions researchers use.
Free to answer12 questions 3 min
Big Five Personality Test
A 20-question test of the five personality traits psychologists use most: openness, conscientiousness, extraversion, agreeableness and neuroticism.
Free to answer20 questions 4 min
PTSD Test (PCL-5)
The 20-question PCL-5, the PTSD checklist from the US National Center for PTSD, covering the past month.
Free to answer20 questions 5 min
Social Anxiety Test
A 16-question test of how self-conscious and uneasy you feel around other people, built from two public-domain research scales.
Free to answer16 questions 4 min
16 Personality Types Test
A 32-question test of four personality preferences that combine into one of 16 types, with a strength score for each.
Free to answer32 questions 6 min
Enneagram Test
A 45-question look at the nine Enneagram types, with your likely main type, a possible wing and scores for all nine. For self-reflection.
Free to answer45 questions 7 min
In-Depth Big Five Personality Test
A 120-question Big Five test that scores the five main traits and the 30 narrower facets underneath them, for a much more detailed picture.
Free to answer120 questions 15 min
Informed by published research from
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Grounded in research
Each test follows trait areas described in published, peer-reviewed studies.
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Full access renews every 4 weeks until you cancel online. You get an email before a trial renews.
You're more than one trait. Explore them all.
Pick a topic to go straight to the test that covers it.
Autism Traits TestSocial interactionCommunicationAttention to detailRoutine and flexibilitySensory sensitivityADHD Traits TestInattentionHyperactivity and impulsivityAnxiety Test (GAD-7)Depression Test (PHQ-8)Attachment Style TestAttachment anxietyAttachment avoidanceBig Five Personality TestOpennessConscientiousnessExtraversionAgreeablenessNeuroticismPTSD Test (PCL-5)Intrusive memoriesAvoidanceNegative thoughts and moodArousal and reactivitySocial Anxiety TestSelf-consciousnessSocial discomfort16 Personality Types TestEnneagram TestIn-Depth Big Five Personality Test
Find out more about yourself in 3 easy steps
- 1
Choose your test
Pick the test that matches what you want to understand. Each one takes about 5 minutes.
- 2
Answer the questions
Rate each statement honestly. You never need an account, and answering is free.
- 3
Unlock your full report
See your overall score, a breakdown by area, and what it means in plain language.
Get more out of every result
See yourself more clearly
Learn where you sit on each trait the test measures, and which areas stand out most.
Explain yourself to others
Plain-language results make it easier to describe how you think and what you need from the people around you.
Prepare for a professional conversation
If you decide to seek an assessment, your report gives you concrete examples to bring to a doctor or psychologist.
The research behind our tests
Our questions are written for SelfAssessment.io. What they ask about, and how we explain your results, follows these published, peer-reviewed studies.
Autism Traits Test
University of Cambridge
Introduced the Autism-Spectrum Quotient, a widely used self-report measure of autistic traits in adults.
Baron-Cohen et al., 2001University of Cambridge
Showed that a short autism-trait questionnaire works as a "red flag" for referral to a full assessment, not as a diagnosis. We frame every autism result the same way.
Allison, Auyeung & Baron-Cohen, 2012Karolinska Institutet
Found that autism questionnaires pick up most autistic adults but also give high scores to many people with ADHD or other conditions. Our results explain this.
Eriksson, Andersen & Bejerot, 2013
ADHD Traits Test
Harvard Medical School · World Health Organization
Developed the WHO adult ADHD screener, which asks how often inattention and hyperactivity symptoms happen. Our ADHD test uses the same never-to-very-often scale.
Kessler et al., 2005Harvard Medical School · World Health Organization
Updated the WHO screener for DSM-5 and found that about one in three positive screens did not meet diagnostic criteria.
Ustun et al., 2017University of Southampton · University of Cambridge · University of Chicago
Showed that brief ADHD screeners flag far more adults than actually have ADHD. Our high-score results say so and point you to a full assessment.
Chamberlain, Cortese & Grant, 2021
Anxiety Test (GAD-7)
Columbia University · Indiana University
Developed and validated the GAD-7, the 7-question anxiety scale our anxiety test uses word for word, with the same scoring.
Spitzer et al., 2006
Depression Test (PHQ-8)
Indiana University · Columbia University
Developed and validated the PHQ-9, the depression questionnaire used in clinics worldwide.
Kroenke, Spitzer & Williams, 2001Indiana University · U.S. Centers for Disease Control and Prevention
Showed that the PHQ-8, the PHQ-9 without its self-harm question, measures current depression well in the general population. Our depression test uses it word for word.
Kroenke et al., 2009
Attachment Style Test
Proposed the four adult attachment styles (secure, anxious, avoidant and fearful) that our attachment results use.
Bartholomew & Horowitz, 1991University of Illinois
Refined how attachment anxiety and avoidance are measured, the two dimensions our attachment test scores.
Fraley, Waller & Brennan, 2000
Big Five Personality Test
Oregon Research Institute
Created the International Personality Item Pool, a public-domain bank of Big Five items. Our Big Five test uses its items.
Goldberg et al., 2006
PTSD Test (PCL-5)
National Center for PTSD
The PTSD checklist created by the US National Center for PTSD. It is in the public domain, and our PTSD test uses its 20 questions and scoring unchanged.
Weathers et al., 2013Developed the PCL-5 and tested it in two groups of trauma-exposed college students, finding it reliable and a good match for the DSM-5 symptom groups.
Blevins et al., 2015National Center for PTSD
Tested the PCL-5 in veterans and found that a total of 31 to 33 was the most accurate point for spotting probable PTSD. Our report is built around that range.
Bovin et al., 2016
Social Anxiety Test
Oregon Research Institute
Described the public-domain International Personality Item Pool, the source of the two scales in our social anxiety test.
Goldberg, 1999
16 Personality Types Test
Found that four-letter type scales measure four fairly independent dimensions, not true either-or types, and that they line up with four of the Big Five traits. That is why our report shows how strong each preference is.
McCrae & Costa, 1989Oregon Research Institute
Described the International Personality Item Pool, which makes thousands of personality items free for anyone to use. All 32 questions in our 16 types test come from it.
Goldberg et al., 2006
Enneagram Test
In-Depth Big Five Personality Test
Pennsylvania State University
Built a free 120-question inventory that measures 30 facets of the Big Five and tested it on more than 600,000 people. Our in-depth Big Five test uses its items.
Johnson, 2014
These researchers and institutions are not affiliated with SelfAssessment.io and do not endorse it.
Frequently asked questions
Is this a medical diagnosis?
No. These are screening questionnaires for self-reflection. Only a qualified clinician can diagnose autism, ADHD or any other condition. If your results concern you, share them with a doctor or psychologist.
What does it cost?
Answering is always free. To see a full report, you can buy that single report for {single}, or get full access to every report: {trial} for 7 days, then {renew} every 4 weeks, or {month} for 28 days, then {renew} every 4 weeks.
How do I cancel full access?
Full access renews automatically until you cancel. You can cancel anytime in your Whop account under Orders, and you keep access until the end of the period you paid for. You get an email before a trial renews.
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Single reports have a private link you can bookmark. With full access, sign in with the Whop account you used at checkout to see reports for every test.
What happens to my answers?
Your answers are stored with your payment so your report keeps working. We do not ask for your name or sell data.