On the basis of example of 32 young psychologists-consultants, who has been studying at Psychological Center of St. Petersburg State University, the article considers assessment of the client and his problem situation by the following parameters: personality characteristics of the client, type and complexity of the problem situation, level of functioning the of the client (sufficient/insufficient) for solving his problem. The article performs analysis of the connection between assessment and peculiarities of personality of young consultants: their self-concept, empathy, affections, self-control, self-satisfaction in different spheres of life etc. It shows that young psychologists-consultants assess the clients by mediation of self-concept, extraversion-introversion, dominance, and anxiety.