Does anyone have any insight as to where I could learn this? Thanks a ton in advance.

George Armstrong released a small manuscript in the the 50's called 'Chandu's Psychoanalysis'. The suggested presentation/patter is quite dated but the concept is quite interesting. Once you have learned the principle, have a look at Derren Brown's 'Reminiscence' effect as a modernization of an old principle.

Thats actually the reason I want to learn it but can't find out how Derren does 'REMENISCENCE'. I know in the first edition of Pure Effect he tells, but not in the copy I have. Thanks a ton to anyone that can help.