Psychological evaluation of Japanese astronaut applicants.

In 1991, a new psychological selection procedure was employed during the selection of Japanese Space Station astronauts. It was based on international selection criteria developed by an international psychological/psychiatric working group. A total of 372 individuals--fewer than expected--submitted applications for Space Station astronaut in Japan. Of the applicants, 233 were given several psychological written tests [Anxiety Scale, Performance Test, General Aptitude Test Battery, and Environmental Adjustment Test Battery (EATB)] in Phase I of the selection. Forty-five applicants went on to take the General Aptitude Test Battery (GATB), Human Assessment Method (a group test), a semi-structured psychological interview and an intelligence test in Phase II of the selection. All applicants were found to be highly intelligent. Interestingly, an unexpectedly large number of candidates were disqualified by the newly developed EATB. Assessment of individual functioning in a group (the Human Assessment Method) resulted in no applicant being ranked in either the "qualified with reservation" (QR) or "disqualified" (DQ) category. Much has been learned from this initial application of psychological "select-in" testing, but further efforts are needed to improve both psychological criteria and evaluation methods and to determine their reliability and validity.