Crewmember and mission control personnel interactions during International Space Station missions.

INTRODUCTION Reports from astronauts and cosmonauts, studies from space analogue environments on Earth, and our previous research on the Mir Space Station have identified a number of psychosocial issues that can lead to problems during long-duration space missions. Three of these issues (time effects, displacement, leader role) were studied during a series of long-duration missions to the International Space Station (ISS). METHODS As in our previous Mir study, mood and group climate questions from the Profile of Mood States or POMS, the Group Environment Scale or GES, and the Work Environment Scale or WES were completed weekly by 17 ISS crewmembers (15 men, 2 women) in space and 128 American and Russian personnel in mission control. RESULTS The results did not support the presence of decrements in mood and group cohesion during the 2nd half of the missions or in any specific quarter. The results did support the predicted displacement of negative feelings to outside supervisors in both crew and mission control subjects on all six questionnaire subscales tested. Crewmembers related cohesion in their group to the support role of their commander. For mission control personnel, greater cohesion was linked to the support role as well as to the task role of their leader. DISCUSSION The findings from our previous study on the Mir Space Station were essentially replicated on board the ISS. The findings suggest a number of countermeasures for future on-orbit missions, some of which may not be relevant for expeditionary missions (e.g., to Mars).

[1]  N. Kanas,et al.  Maintaining Privacy During Psychosocial Research on the International Space Station , 2005 .

[2]  V. V. Lebedev,et al.  Diary of a cosmonaut : 211 days in space , 1988 .

[3]  R. Littell.  SAS System for Mixed Models , 1996 .

[4]  Amy Berning,et al.  The Third-Quarter Phenomenon: Do People Experience Discomfort After Stress Has Passed? , 1991 .

[5]  Nick Kanas,et al.  Psychological adaptation and salutogenesis in space: Lessons from a series of studies , 2007 .

[6]  H Ursin,et al.  Interpersonal relations during simulated space missions. , 1995, Aviation, space, and environmental medicine.

[7]  D L Harm,et al.  Psychological Changes in Hundred-Day Remote Antarctic Field Groups , 1999, Environment and behavior.

[8]  O P Kozerenko,et al.  Some problems of group interaction in prolonged space flights. , 1999, Human performance in extreme environments : the journal of the Society for Human Performance in Extreme Environments.

[9]  V. Gushin,et al.  Asthenia—Does It Exist in Space? , 2001, Psychosomatic medicine.

[10]  G M Sandal,et al.  Coping in Antarctica: is it possible to generalize results across settings? , 2000, Aviation, space, and environmental medicine.

[11]  N Kanas,et al.  Crewmember and ground personnel interactions over time during Shuttle/Mir space missions. , 2001, Aviation, space, and environmental medicine.

[12]  N Kanas,et al.  Content analysis of the crew communication with external communicants under prolonged isolation. , 1997, Aviation, space, and environmental medicine.

[13]  Peter Suedfeld,et al.  Temporal Patterns of Affect in an Isolated Group , 1991 .

[14]  N Kanas,et al.  Psychosocial factors affecting simulated and actual space missions. , 1985, Aviation, space, and environmental medicine.

[15]  R. Moos.  Work environment scale manual , 1986 .

[16]  Y. Benjamini,et al.  Controlling the false discovery rate: a practical and powerful approach to multiple testing , 1995 .

[17]  N Kanas,et al.  Interpersonal and cultural issues involving crews and ground personnel during Shuttle/Mir space missions. , 2000, Aviation, space, and environmental medicine.

[18]  S. Zeger,et al.  Longitudinal data analysis using generalized linear models , 1986 .

[19]  J Stuster,et al.  The relative importance of behavioral issues during long-duration ICE missions. , 2000, Aviation, space, and environmental medicine.

[20]  Nick Kanas,et al.  Space Psychology and Psychiatry , 2003 .

[21]  L A Palinkas,et al.  Behavior and performance on long-duration spaceflights: evidence from analogue environments. , 2000, Aviation, space, and environmental medicine.

[22]  N Kanas,et al.  Psychosocial issues in space: results from Shuttle/Mir. , 2001, Gravitational and space biology bulletin : publication of the American Society for Gravitational and Space Biology.