| Code | Display | Definition |
| confinement-anxiety |
Confinement Anxiety |
Anxiety specifically related to the confined conditions of spacecraft |
| chronic-mission-stress |
Chronic Mission Stress |
Prolonged stress experienced during extended space missions |
| earth-out-of-view-phenomenon |
Earth-Out-of-View Phenomenon |
Psychological effects of not being able to see Earth during deep space missions |
| crew-cohesion-issues |
Crew Cohesion Issues |
Problems with interpersonal relationships and group dynamics during spaceflight |
| mission-fatigue |
Mission Fatigue |
Cumulative fatigue, both physical and mental, experienced during long-duration missions |
| space-asthenia |
Space Asthenia |
A condition characterized by weakness, fatigue, and emotional lability during long-duration spaceflight |
| behavioral-health |
Space Behavioral Health |
Overall mental and behavioral well-being during spaceflight |
| communication-delay-stress |
Communication Delay Stress |
Psychological effects of delayed communications with Earth during deep space missions |
| third-quarter-phenomenon |
Third-Quarter Phenomenon |
A period of decreased motivation and morale that often occurs after the midpoint of a mission |
| salutogenesis |
Salutogenesis in Space |
Positive psychological effects and personal growth experienced during spaceflight |
| space-euphoria |
Space Euphoria |
Intense feelings of bliss and connectedness reported by some astronauts, particularly during spacewalks |
| overview-effect |
Overview Effect |
Profound cognitive shift in awareness reported by astronauts while viewing Earth from space |