Yes, there are, in fact, space psychologists who are employed by NASA to help with a variety of tasks. On the ground, they help with crew selection regarding assessment and who may become an astronaut candidate. This is a very rigorous process intended to first, weed out those with mental disorders and then ensure that those selected have what it takes to cope with a variety of stressors such as conflict, flight delays, and isolation.
Psychologist employed by NASA also carry out evaluations of space personnel at regular intervals leading up to the launch, conduct training sessions to improve coping, leadership and interpersonal skills such as conflict resolution and communication, for use aboard the spacecraft. They also provide counseling for any other issues which may be concerning the astronaut and their family. In space, regular conferences are held with crew members to assess adjustment and functioning, and problem solves any difficulties they may be experiencing. Once an astronaut returns from space, sessions are held with them and their family to help them adjust to being back on earth and reintegrate with their family members.
NASA psychologists are additionally involved in other job areas that are space related. Research is a big area of focus for these scientists on topics that aim to increase understanding of how mental processes and functioning and thoughts and emotions are affected by living in space and how self-evaluation and evaluation of the future are affected by serving on a space mission.
Space psychologists are also currently tasked with establishing protocols that include identified variables and factors that need to be focused on for long duration space travel. Some of these may differ from less lengthy missions. Space psychologists are creating new ways of evaluating crew members on long-duration space travel such as using physiological indicators of psychological functioning (e.g., heart rate, galvanic skin response, hormone production) and developing methods of observation, data collection, and analysis for these types of missions.