PAB: Education
Training Indoctrination
The Basic Study Manual I did in 1975 included these Learning Processes.  Hubbard links the Learning processes to brainwashing in this lecture.
PAB 110 PROFESSIONAL AUDITOR'S BULLETIN
The Oldest Continuous Publication in Dianetics and Scientology
Via Hubbard Communications Office 35/37 Fitzroy Street, London Wl
15 April 1957

EDUCATION
[...]
1.   Learning Process No. 1:
(Flatten each part thoroughly before going to next.)
a. Give pc 3 numbers. Have him repeat. See if he remembered. Repeat this process.
b.  Give him incorrect datum. Have him repeat it. Discover if he could remember it. Discover if he could reject it. Repeat this process.
c. Give him vital datum (concerning rudiments of auditing in the case of a Scientologist, for example). See if he can repeat it. See if he can rephrase it. Have him give objective examples. See if he can reject it. Repeat this process.

2.    Learning Process No. 2:
a.  Discover things auditor and pc can agree on in vicinity.
b.  Feed pc vital data (Scientology and rudiments, for example). Get him to give objective examples, rephrase and reject and accept.

3.    Learning Process No. 3:
Have pc discover unimportant data in environment.

4.    Assigning Identity:
This is a walkabout, inside and outside.
Commands:
Look around here and find something you could have.
For what is it used? (or What is it called?)
Could you invent another use (name) for it?

5.    Objective Forgettingness:
This is a Not-Know Process. It is another walkabout.
Commands:
Look around here and find something it would be all right to forget
(or not-know).
If these five processes are flattened early in the week, note the changes, repeat, and effect further changes.

— L. Ron Hubbard
PAB 110 15 April 1957 Education pdf