The methodology of psychological research is based on theoretical-scientific principles in a continuous improvement of the methods used, and on objectively implemented research strategies. Scientific knowledge of the individual involves the use of decoding grids designed to highlight the human personality. Relevant in scientific research are the constructed and valid hypotheses that lead to the behavioral prediction of the individual, to the understanding of his entity as mind, body and soul, to the elaboration of new predictions and orientations in future, interdisciplinary and transdisciplinary research leading to progress. With the progress of society, new challenges arise in scientific research, teams of researchers must deepen the study of human behavior, develop new research methods and tools to guide psychologists in the correct assessment of behavioral patterns and take new complementary therapies for the benefit of individuals.