Free Cognitive Function Test
Find your type and all eight functions in your stack.
- Based on Jung's eight cognitive functions
- Free, no email needed
- Answers never stored
What you'll get
Your result goes past four letters. Here's what's waiting on the other side of question 52.
Your full stack
All eight cognitive functions in order, from your hero through your shadow, with what each position means for you.
Your type breakdown
A dedicated page for your type: what comes naturally to you and where you have the most room to grow.
20% off
A discount code for books and guides written for your type, unlocked on your results page.
Which one are you?
Take the test to find out, or explore any type now.
Functions, not four letters
Most tests score each letter on its own. This one measures the eight cognitive functions underneath them and works out the order you use them in.
Answer 52 scenarios
Each one sets a function against its opposite. Pick where you lean, from strongly A to strongly B.
We map your functions
Your answers are compared against all sixteen stacks to find the order that fits you best.
See your whole stack
Your type, all eight positions, and the one function with the most room to grow.
Before you start
How is this different from other personality tests?
Most tests score E/I, S/N, T/F and J/P separately and combine the letters. This test measures the eight cognitive functions directly, then works out which four you use and in what order. That order is what your type actually describes.
Should I answer how I am or how I want to be?
How you are now, on an ordinary day. There are no better or worse answers, and answering as the person you're working toward will give you someone else's type.
What if my result doesn't feel right?
Your results page shows the closest alternatives. Read your result and the runner-up, and see which one describes a real day in your life. You're the final judge.
Can I skip a question or go back?
Yes. Use the Back button, or tap any segment of the progress bar to jump straight to that question. Anything you missed shows up in a different colour.
Can I retake it?
As often as you like. There's a Retake button on the results page.
Is my data stored?
No. Your answers are scored in your browser and aren't saved or sent anywhere, and you don't need an account or an email address.
Not ready for 52 questions yet?
Start with the free handbook. It explains the eight functions and how they combine into the sixteen types.
Get the free handbook