High Quality Content by WIKIPEDIA articles! Selection, training, cohesion and psychosocial adaptation influence performance and, as such, are relevant factors to consider while preparing for costly, long-duration missions in which the performance objectives will be demanding, endurance will be tested and success will be critical. During the selection of crew members, throughout their training and during their psychosocial adaptation to the mission environment, there are several opportunities to encourage optimal performance and, in turn, minimize the risk of failure.