I did not learn until after the experiment was over that my mother was so concerned about me that she had sent this letter the next day.

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Letter to Dr. Zimbardo from Rich's mom, Rose Yacco.

My husband and I visited our son at “Stanford County Prison.” It seemed very real to me. I had not expected anything quite so severe, nor had my son when he volunteered, I am sure. It gave me a depressed feeling and I was somewhat upset when I saw him. He looked very haggard and his chief complaint seemed to be that he had not seen the sun for so long. I asked if he was sorry he volunteered and he answered that, at first, he had been. However, he had gone through several different moods and he was more resigned.This will be the hardest-earned money he will ever earn in his life, I am sure.
Mother of “1037”
Mrs. Rose Yacco
We hope the project is a big success.

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