MORI 190576

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1 Subject: SI and H Experimentation, 21 May l951l (Room 20, Euilding 13)

On Monday, 21 May 1951, and conducted experiments in SI and H between 5r20 PM and 6:30 PM with as volunteer subjects.

Since this was their initial experiment and test, they were very thoroughly triefed on the nature of the work, the methods, and, to a certain extent. the ultimate aims of the B problem. All present were cautioned as to the secrecy necessary for these experiments.

After a furthengeneraldiscussion among and gave the "fall back test. She reacted veryouickly and fell back to the point of being caught. After testing also successfully, in the same manner ave the "hand-arm rising" test and again sresponded quite rapidly. Herattention at this point was excellent. After further discussion tried the hand rising test on botH and efrom across the room with the result that s reaction was excellent, but fas negative.

At this point tried the "relaxing" test. After about 10-15minutes, both and reached a very light sleep. However, both awakenedwhem. Hifted the hand of each subject. Both ad and stated they could remember almost all of Is words but both had a sleepy, "going off"feeling. Foth recalled moving their hands once whereas in faot lad moved their hands twice.

Both subjects are considered good material--very intelligent, highly interested and cooperative..

Since both girls seemed perfectly awake after further general discussion. tests were concluded at about 6:30 PM.

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