Overview
- The study, published in PNAS and reported May 25–26, 2026, tracked the 12-member Concordia station crew across a full Antarctic winter using wearable proximity sensors and repeated questionnaires.
- Researchers recorded rising loneliness, growing mistrust and more frequent conflicts while group cohesion and task performance fell over the ten-month isolation.
- Several crew members developed beliefs that others were watching or talking about them, a pattern the study’s psychiatrists described as generally mild paranoia rather than clinical psychosis.
- Objective interaction data showed the group split into subgroups by language or nationality and that people with many physical contacts often reported more conflicts and lower performance, not more support.
- Authors recommend early detection of social breakdown, targeted psychosocial support, and revised selection and training for long-duration space missions and other remote workplaces, while noting limits to generalizing from a 12-person sample.