When we speak of the deductive method, it refers to that method where we go from the general to the specific. This begins giving way to the data in a certain way valid, to arrive at a deduction from a logical reasoning or assumptions; In other words, it refers to a process where there are certain rules and processes where, thanks to their assistance, final conclusions are reached based on certain statements or premises. Etymologically breaking down the term deductive method, it can be said that the word deductive comes from the Latin "deductive" which means "work by reasoning"; and the word method also has Latin roots, specifically the voice "methŏdus" and thisfrom the Greek "μέθοδος" which means "the way to follow" or "the steps to follow to do something".
The main characteristics of this method are that it relies on gradually correlating certain knowledge that is supposed to be true in a way that derives from new knowledge; Another possible characteristic is that it couples simple and necessary principles, and finally validates itself from logic.
When carrying out a theory with the hypothetico-deductive method, a series of steps or stages must be followed. First the induction process to obtain a summary or descriptive compilation of the facts that were observed; second appears the deduction process where they generalize the explanations and descriptions driven to be able or try to apply them to circumstances and facts even without observing; third, the possible hypotheses or theories resulting from the previous phase will be put to the real or concrete test; and the fourth stage are organized in general principles, the theories that were validated, which may be related to later give way to their own theory.
