CONTENTS Acknowledgments Chapter I. Living in Space Background A Framework for Forecasting Guiding Assumptions Theoretical Orientation The Available Data Space Environments The Physical Environment The Social Environment Basic Reactions to Space-like Environments Temporal Fluctuations Summary and Conclusions Chapter II. Behavioral and Selection Implications of Biomedical Changes Physiological Deconditioning Simulation Studies Resistance to Deconditioning Countermeasures Vestibular Alterations Manifestations and Theory Resistance to Vestibular Effects Countermeasures Visual Changes Summary and Conclusions Chapter III. Habitability Background The Physical Environment Interior Space Food Hygiene Temperature and Humidity Decor and Lighting Odor Noise Health and Leisure Recreation Exercise Privacy Meaning and Functions Theory Bases of Needs Mechanisms Crowding Territoriality Privacy in Space Complex Effects Multiple Stressors Aftereffects Summary and Conclusions Chapter IV. Performance Describing Performance Work Requirements in Space Human Performance Abilities Assessment of Human Performance Discrete-task Assessment Techniques Multiple-task Batteries Partial- and Full-scale Simulation In-flight Performance Assessment Future Focus of Research on Performance Assessment Issues in Astronaut Work Regimes Factors Affecting Work Capacity Factors Affecting Work Schedules Factors Affecting Workload The Effects of Desynchronosis Sleep Disturbances Summary and Conclusions Chapter V. Small Groups Introduction Individual Characteristics and Crew Compatibility Gender Age Culture Personal Attractiveness Emotional Stability Competence Cooperativeness Social Versatility Similarities and ComplementaritiesGroup Homeostasis Crew Size and Social Compatibility Assembling Groups Interpersonal Dynamics Leadership Cohesiveness Compliance, Conformity, and Independence Group Performance Temporal Dynamics Summary and Conclusions Chapter VI. Communication Introduction Direct Interpe