Project Implicit
It is well known that people don’t always ‘speak their minds’, and it is suspected that people don’t always ‘know their minds’. Understanding such divergences is important to scientific psychology.
This web site presents a method that demonstrates the conscious-unconscious divergences much more convincingly than has been possible with previous methods. This new method is called the Implicit Association Test, or IAT for short.
…
The IAT was originally developed as a device for exploring the unconscious roots of thinking and feeling. This web site has been constructed for a different purpose — to offer the IAT to interested individuals as a tool to gain greater awareness about their own unconscious preferences and beliefs.
https://implicit.harvard.edu/implicit/
Check out the demonstration. There’s a huge variety of tests and each test only takes 5-10 minutes.