Dr. Suzanne Bell, an organizational psychologist and head of the Behavioral Health and Performance Laboratory at NASA’s Johnson Space Center, starts her day at 5 a.m. without relying on an alarm clock. Her mission: to ensure that astronauts can perform effectively under the extreme psychological and physical demands of spaceflight.
Bell’s laboratory focuses on understanding and enhancing the mental resilience, team dynamics, and decision-making capabilities of astronauts — factors that are just as critical as engineering and life-support systems for mission success. The work involves studying how isolation, confinement, microgravity, and communication delays affect cognition, mood, and group cohesion.
The lab designs training programs, monitoring tools, and countermeasures to help crews manage stress, conflict, and fatigue. For example, astronauts practice mindfulness techniques, conflict-resolution strategies, and communication protocols that Bell’s team has tailored to the unique constraints of space. These tools are used aboard the International Space Station (ISS) and are being refined for future lunar and Martian missions, where communication delays with Earth can be up to 20 minutes one way.
Bell’s own routine reflects the discipline she studies. She wakes naturally at 5 a.m., uses the quiet morning hours for focused work, and maintains a consistent sleep schedule — a strategy she recommends to astronauts as a foundation for stable performance. The body’s circadian rhythm, she notes, is a powerful regulator of alertness and mood, and maintaining it becomes especially challenging in space, where the sun rises and sets 16 times a day.
The Behavioral Health and Performance Laboratory is part of NASA’s broader Human Research Program, which investigates the health risks of space travel. Bell’s team collaborates with psychologists, neuroscientists, physicians, and engineers to build evidence-based support systems. They conduct both ground-based simulations, such as isolation studies in Antarctic stations or mock habitats, and in-flight experiments on the ISS.
One key area of research is the impact of microgravity on brain function. While much attention has been paid to bone density and muscle loss, Bell emphasizes that cognitive performance — reaction time, memory, decision-making — can be subtly affected by fluid shifts and changes in blood flow. The lab is validating portable neuroimaging devices that could one day allow crew members to self-assess their cognitive state during long missions.
Another focus is team resilience. In space, a small crew must live and work together in close quarters for months. Personality conflicts, cultural differences, and communication breakdowns can escalate into serious operational risks. Bell’s team has developed a series of exercises and debriefing techniques modeled on evidence from expedition teams on Earth, including military units, polar research stations, and mountaineering groups.
The research also has practical applications beyond spaceflight. Bell points out that many of the strategies proven to help astronauts — structured communication, regular feedback cycles, autonomous problem-solving — are directly transferable to high-stress civilian professions such as emergency medicine, offshore drilling, and remote mining. The lab publishes findings in peer-reviewed journals, contributing to the broader field of organizational psychology.
In interviews, Bell has described her work as «not rocket science, but just as critical.» The phrase is a modest nod to the fact that while rocket engineers build the vehicles, behavioral scientists like Bell ensure the people inside them can operate those vehicles safely and effectively. Her daily alarm-less wake-up is a small but telling example of the personal discipline she advocates for others.
As NASA prepares for the Artemis missions to the Moon and eventually crewed flights to Mars, Bell’s work will become even more central. Crews will be away from Earth for years, with limited real-time contact. The psychological stress of such isolation has no precedent in the space program. Bell’s lab is already running long-duration analog studies to test new countermeasures, including virtual-reality environments for relaxation and artificial-intelligence assistants for mental-health monitoring.
For now, Bell’s day begins at 5 a.m. She drinks a cup of coffee, reviews research data, and mentally prepares for the challenges ahead — much like the astronauts she supports. But instead of suiting up for launch, she walks into her laboratory at Johnson Space Center, where she and her team continue to refine the tools that will keep crews healthy, cohesive, and high-performing, no matter how far from home they travel.
