21st American Advanced Clinical Course (released previously as Skills of a Theta Being)
January--February 1959, 9 lectures.
Students attending this ACC were given a series of auditor skill breakthroughs including LRH's first description of muzzled auditing as well as three qualities of an auditor, which he listed enumerated as: high reality on Scientology, good judgment and high ARC. He used these to stress the importance of reality in auditing and how the auditor had to undercut the preclear's reality level in order to raise it, which in turn raised the preclear's responsibility level.
