The article focuses on the problem of appointment and psychophysiological examination of personality. Theoretical approaches to stress resistance as a psychological category and one of the components of expert research are analyzed. Stress resistance is considered as a dynamic, integrative property of personality, as a result of interaction with a stressor, which includes the process of self-regulation, cognitive representation, objective characterization of the situation and requirements for personality. It is formed in the process of personality confrontation with stressors that are repeated in different situations and depend on understanding the life situation, adequate judgments in its interpretation, rational assessment and ability to predict their actions, the ability to choose adequate means of coping with stress. The article considers the level of stress resistance of the individual. The main methods of research of the level of stress resistance and determination of professional suitability are analyzed. The sample, stages of the research are characterized and the obtained results of the study of stress resistance in adolescence are analyzed. The necessity of psychological support to increase the level of personality resilience is discussed. In the article notes that the stress resistance of students is determined by the presence of stressors in the student environment, such as exam situations, periods of social adaptation, the need for personal self-determination in future professional activities. A powerful flow of information in the learning process of students increases the load on the cognitive sphere of personality, which leads to functional changes in the emotional, behavioral and personal spheres. High internal stress can cause complex physiological changes in a young person's body, and strong emotional stress leads to stress.