SI AND H EXPERIMENTATION, 12 MAY 1953

• Document Type: SPECIALCOLLECTION
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): 00428159
• Release Decision: RIPPUB
• Original Classification: U
• Document Page Count: 1
• Document Creation Date: January 23, 2025
• Document Release Date: August 23, 2000
• Publication Date: May 12, 1953

To: File
Subject: SI and H Experimentation, 12 May 1953
May 1953, SI and H Experimentation was conducted by
e �te he followin volunteers in Room 20
For matter of record, it should be noted that
was returning to work after a number of weeks owing to ninistrative
difficulties and this was her second session in the work.
Since all subjects present knew approximately what was required
of them and had made good efforts on their first starts, a slow induction
test was mil on all the subjects as a group. At the conclusion of these
tests, every subject was given a code word as a PH suggestion and each
subject was quickly placed into a deep H state by the use of the code
word.
While each subject in the second test was run individually,
tests for normal movement, conversation, -opening eyes, etc. were tried
and in general results showed marked improvement over previous attempts.
This session was concluded by another rapid induction in which
all PH commands which had been given were erased, except a PH hand raising
In this PH, all subjects responded very well except ho
test after the count of Shad been reach on the au e.
at the count of 5 dropped her arms completely while aLJ. o e jects
responding to the Ph found their arms raised into the air above their
shoulders. This session was concluded at approximately 9:00 PM and
in general it may be said the group is progressing reasonably well for
the amount of time consumed.
APPROVED FOR RELEASE
DATE: jA &OC