An Antarctic wintering-over station is a unique environment, as a small isolated society facing extreme survival margins. Psychological surveys have been done over ten years, including the Baum test, the Positive and Negative Affect Schedule (PANAS), the Coping Orientation to Problems Experienced (COPE), Subjective Health Complaints Inventory (SHC), the Two-Sided Personality Scale (TSPS) and medical consultations in Syowa Station, a Japanese Antarctic station to reveal the mental status of team members. Team members experienced fewer physical health risks in Antarctica than in Japan. Wintering-over team members reinterpreted situations positively and accepted their environment, sought instrumental social support, planned ahead, and used active coping skills and humour to overcome difficulties. They did not act out emotionally or deny problems. Individuals exhibited two types of coping, either stability through maintaining a previous lifestyle or flexible adjustment to a new way of life. Positive affect remained constant during the wintering-over period. In living through a harsh reality, team members drew support from the subjective feelings of an “internal relationship” with home or family in their minds. Thus, an Antarctic wintering-over station is an ideal isolated environment for psychological surveys, which can help understand future space travel and group managements in everyday societies.

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