Astronauts did self-inquiry

[Outer]

"... Worst of all, the astronauts thought, were the 25 psychological tests that entailed minute and painful self-examination ("Write 20 answers to the question: 'Who am I?'") From the 18 survivors, seven were chosen in April 1959, and they would remain the Nation's only astronauts for three and one-half years. Their IQs ranged from 130 to 145, with a mean of 136. Even before they had accomplished anything they became instant heroes to small boys and other hero-worshipers around the world. ..."

https://history.nasa.gov/SP-350/ch-8-2.html