A demonstration of the race task can be found [here][1].
A demonstration of the presidents task can be found [here][2].
To participate in either task, visit: [https://implicit.harvard.edu/implicit/selectatest.html][3]
[1]: https://dw2.psyc.virginia.edu/implicit/Launch?study=/user/education/race/demo.race.0004/race.expt.xml
[2]: https://dw2.psyc.virginia.edu/implicit/Launch?study=/user/education/presrandom/presrandom.expt.xml
[3]: https://implicit.harvard.edu/implicit/selectatest.html