Positivist philosophy, at its core, operates on a set of fundamental assumptions about the nature of reality, how we can know it, what we value in this pursuit of knowledge, and the methods we should employ.
Ontologically, positivism posits the existence of a singular, objective reality. This reality is not just out there, but is considered to be "[...] underlying, true, unequivocal [...]". Language, in this framework, serves as a tool to describe and represent this pre-existing reality.
Epistemologically, positivism asserts that scientists can and should strive for objectivity in their investigations. A crucial aspect of this is the belief that the characteristics and identity of the researcher can and must be separated from the research process. This separation is deemed essential to prevent bias from contaminating the data and findings.
Axiologically, objectivity stands as a central value in positivist philosophy. It underpins the entire approach to knowledge generation.
Methodologically, the pursuit of objectivity is the driving force. Positivists believe this can be achieved by rigorously separating the researcher's characteristics or "identity" from the research itself. This allows for the development of knowledge based on strict criteria. The focus is on developing general laws, aligning with a nomothetic approach to science. Knowledge is advanced through the systematic testing of hypotheses. Furthermore, positivism "[...] tacitly assumes an automatic and continued coincidence of a given individual generative mechanism, events expressing that mechanism, and our experience of them." This suggests a belief in the consistent and predictable relationship between underlying causes, observable events, and our ability to perceive them accurately.
To achieve these methodological goals, positivism favors methods such as statistical analysis (descriptive, explorative, and inferential), the utilization of large datasets (both longitudinal and cross-sectional), rigorous hypothesis testing, the use of quantifiable data, and the testing of nomothetic and constant relationships.