The author provides her own interpretation of what intelligence and creativity tests reveal. The author shows that creativity tests, based on the notion of creativity as divergent thinking, cannot be valid. This notion of creativity contrasts with another notion which originates in philosophy and the human sciences and which is shared by the Russian psychological tradition. The author refers to her own conception of creativity, in which she uses a notion of the unit of analysis. Finally, the author offers a new method of psychological diagnostics, the validity of which has been proved by both theoretical and experimental research.