title: Human element in long-duration spaceflight introduction
authors.affiliation: Loyola University of Chicago, Illinois 60611, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Nicholas
mesh_terms: D000337:Aerospace Medicine; D018480:Astronauts / Q000523:psychology*; D006126:Group Processes; D006801:Humans; D007398:Interpersonal Relations; D010560:Personnel Selection; D013026:Space Flight / Q000639:trends*; D014893:Weightlessness