I tried the online version of the tests, and the priming seemed to me to be built in...
After 40 or 50 training clicks, priming my brain to link “left hand” with “good” and “tested quality”, of course it’ll take me longer/I’ll make more mistakes/etc… when you start juggling the associations around.
I believe the video you were looking for is here:
[censored the link on account of comment below]
http://www. yachigusaryu. com/blog/2007/02/no-touch-knockout-fraud-exposed.html