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The article in the issue 7:4:

The date of the publication:
2018-10-26
The number of pages:
46
The issue:
7:4
Commentaries:
0
The Authors
Jan Woleński, Andrzej Waleszczyński, Michał Obidziński, Julia Rejewska, Adrian Mróz, Elena Lisanyuk, Evelina Barbashina, Andrew Schumann,

Professor at the Jagiellonian University in Krakow and the University of Information Technology and Management in Rzeszow.

E-mail: wolenski@if.uj.edu.pl

ARTICLE:

Truth and Adequacy.
Remarks on Petrażycki’s Methodology

The paper discusses the concept of adequacy central for Pertażycki’s methodology.
According to Petrażycki any valuable scientific theory should be adequate,
that is, neither limping (to broad with respect its actual scope) nor jumping
(too narrow with respect to its actual scope). Consequently, adequacy of a
theory is a stronger condition than its truth. Every adequacy theory is true, but
not conversely. However, there is problem, because scientific laws are conditionals
(implications). This suggests that adequacy is too strong conditions, because
the consequence of an implication has a wider scope than its antecedent.
Thus, laws should have the form of equivalence. The paper shows how modeltheoretic
characterization of theories allows to recognize truth and adequacy,
consistently with Petrażycki’s claims.

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