Editing Hypothetico-deductive model (section)

===Versus other research models===

The hypothetico-deductive approach contrasts with other research models such as the [[Inductivism|inductive approach]] or grounded theory. In the data percolation methodology,
the hypothetico-deductive approach is included in a paradigm of pragmatism by which four types of relations between the variables can exist: descriptive, of influence, longitudinal or causal. The variables are classified in two groups, structural and functional, a classification that drives the formulation of hypotheses and the statistical tests to be performed on the data so as to increase the efficiency of the research. <ref>{{Citation |last= Mesly |first= Olivier | date= 2015 |title= Creating Models in Psychological Research | location= United States | publisher= Springer Psychology  |pages= 126  |isbn = 978-3-319-15752-8}}
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