In science today
See also: Constructive empiricism
The key features of positivism as of the 1950s, as defined in the "received view",[56] are:
A focus on science as a product, a linguistic or numerical set of statements;
A concern with axiomatization, that is, with demonstrating the logical structure and coherence of these statements;
An insistence on at least some of these statements being testable; that is, amenable to being verified, confirmed, or shown to be false by the empirical observation of reality. Statements that would, by their nature, be regarded as untestable included the teleological; thus positivism rejects much of classical metaphysics.
The belief that science is markedly cumulative;
The belief that science is predominantly transcultural;
The belief that science rests on specific results that are dissociated from the personality and social position of the investigator;
The belief that science contains theories or research traditions that are largely commensurable;
The belief that science sometimes incorporates new ideas that are discontinuous from old ones;
The belief that science involves the idea of the unity of science, that there is, underlying the various scientific disciplines, basically one science about one real world.
The belief that science is nature and nature is science; and out of this duality, all theories and postulates are created, interpreted, evolve, and are applied.
Positivism is elsewhere defined as the belief that all true knowledge is scientific,[57] and that all things are ultimately measurable. Positivism is closely related to reductionism, in that both involve the belief that "entities of one kind... are reducible to entities of another,"[57] such as societies to configurations of individuals, or mental events to neural phenomena. It also involves the contention that "processes are reducible to physiological, physical or chemical events,"[57] and even that "social processes are reducible to relationships between and actions of individuals,"[57] or that "biological organisms are reducible to physical systems."[57]
While most social scientists today are not explicit about their epistemological commitments, articles in top American sociology and political science journals generally follow a positivist logic of argument.[47][48] It can be thus argued that "natural science and social science [research articles] can therefore be regarded with a good deal of confidence as members of the same genre".[47]