The goal of this experiment is to understand MDRS habitat operational issues and benefits regarding ergonomics based on the crews’ feedback and past experience and understanding of the space analog habitat. There are number of constraints related to activities in confined environments and extreme conditions. These can be analyzed, understood and optimized based on assessment of personal perception of task in specific environment with specific resources. Cognitive function analyses allows us to de-compose human action in very detail of its complexity while keeping up the holistic viewpoint of the human action and human condition structures / relations. Every task, before taken into action is interpreted differently, based on personal role (engineer, scientist, biologist, XO, Commander or health officer) and available resources (hardware, software, time, atmosphere, environment etc.). This study intends to analyze crew’s actions and operation based on their individual roles and resources of extreme environment at MDRS, considering division of human condition in three main activities: work, labor and vita-activa (social life) where only work (with influence of social life) will be considered for this study (labor is considered physiological processes, while work can be a duty or entertainment). Crewmembers will be asked to draw their mental map of habitat related to daily and task specific activities onto a pre-described template of habitat in order to asses complexity of translation path or motion to be performed regarding the tasks accomplishment, frequency or repetition of tasks (notional) by drawing the path in the habitat template. Crewmembers will be asked to list resources to each task in terms of means, obstacles, enablers such (windows, sight angles, collisions, motion safety risks) from view point of subsystem, hardware habitat resources (not psychological). This short experiment will be based on custom made questionnaire for analyses of human action in specific environment of MDRS. Each crewmember will receive 1 questionnaire at the end of the mission. The results from this experiment will point out major benefits and drawbacks of the current MDRS habitat configuration and at the same time will enable distinguishing different cognitive and ergonomics perspectives of various roles in specific tasks providing a “mental map” range that could be extrapolated into a habitat configuration and its enhancement regarding physical ergonomics and layout. This is a space architecture questionnaire.