I'm going to bet they used something like harvards implicit to run this test. If you have never seen it, the results are surprising given how simple the tests are (measure your time of response)

https://implicit.harvard.edu/implicit/

the warning statement alone should make you interested:

  I am aware of the possibility of encountering interpretations 
  of my IAT test performance with which I may not 
  agree. Knowing this, I wish to proceed