The article presents methodology and methods of field study on the example of studying the professional mentality (PM). Purpose of the study: Analysis of typical conditions of scientific research work (SRW), connections between methods, recorded facts and properties of psychological objects. Methods: analysis of literary sources; observation, questionnaires, expert polls, psychodiagnostics, parametric methods of statistics. Hypotheses: 1. Research methods, revealed scientific facts, described properties of psychological objects are in a relationship of mutual conditioning. 2.
