Hypothetico-deductive reasoning in scientific inquiry

Hypothetico-Deductive Reasoning

Karl Popper who argued that a hypothesis is best proved through a process that includes falsification or disproof is known as the chief architect of the scientific methodology called the hypothetico-deductive method of reasoning. This method involves iterations of the four steps of characterization, hypothesis, prediction or logical deduction from the hypothesis, and test of the first three stages (wordIQ.com). Philosopher Karl Popper's work was also based on the premise that it is impossible to prove a scientific theory by means of inductive reasoning alone since no amount of evidence may prove sufficient to assure that contrary evidence will not be found (Pidwirny, 1999-2004).

Thus, the hypothetico-deductive method advocates careful characterization of the subject under investigation, which involves meticulous measurement of observations as well as the use of operational definitions of relevant concepts. This step is followed by the formulation of a hypothesis that attempts to provide a causal explanation of the subject or phenomenon being studied. The test of a useful hypothesis is its ability to enable predictions by deductive reasoning that can then be experimentally assessed. If results contradictory to the predictions are found, the hypothesis being tested is deemed incorrect or incomplete, requiring either refinement or abandonment. Conversely, if the experiments conducted confirm the predictions, the hypothesis is then considered as potentially correct, but is always subject to further test. Of course, experiments can be designed to seek either confirmation or falsification of the hypothesis (wordIQ.com).