In Explanation and Understanding ...
In Explanation and Understanding , Georg Henrik von Wright, argues that human science (also, humanistic social science, moral science and human sciences) refers to the investigation of human life and activities via a phenomenological methodology that acknowledges the validity of both sensory and psychological experience.
It includes but is not necessarily limited to humanistic modes of inquiry within fields of the social sciences and humanities, including history, sociology, anthropology, and economics. It’s use of an empirical methodology that encompasses psychological experience contrasts to the purely positivistic approach typical of the natural sciences which exclude all methods not based solely on sensory observations.
Thus the term is often used to distinguish not only the content of a field of study from those of the natural sciences, but also its methodology. (von Wright, 1971. Pp 4-8) To complicate the question, one could take into consideration the very concept of science in the context of, what Rene Guenon terms as ‘The Reign of Quantity’.
To put it differently, ambiguity and confusion regarding usage of the terms 'science', 'empirical science', and 'scientific method' have complicated the usage of the term 'human science' with respect to human activities. The term 'science' refers to ‘ scientia ’ i.e. 'knowledge'. 'Science' may be appropriately used to refer to any branch of knowledge or study dealing with a body of facts or truths systematically arranged to demonstrate the operation of general laws.
Nonetheless, according to Positivists, the only authentic knowledge is scientific knowledge which comes from positive affirmation of theories through strict scientific method. As a result of the positivist influence, the term science is frequently employed as a synonym for empirical science .
Empirical science is knowledge based on the scientific method, a systematic approach to verification of knowledge first developed for dealing with natural physical phenomena and emphasizing the importance of experience based on sensory observation. However, even with regard to the natural sciences, significant differences exist among scientists and philosophers of science with regard to what constitutes valid scientific method.
(Popper, 2002) In the course of the 20th century, usage of the term has been extended to the study of human social phenomena as well.