Unmeasurable characteristics in comparing economies: Poland and European Union Countries

After the recent period of economic and political change, many countries of Central and Eastern Europe are interested in integrating with the European Union. Therefore, there is considerable significance in comparative research in economic policies. One of the methods used is the taxonomic approach. During the evaluation and comparison of various national economies' development, both measurable and unmeasurable features are found in the collection of diagnostic features. For this reason, it is very important to estimate the level of research subjectivity—or the influence of unmeasurable features—on the results of comparative research. This paper proposes the methodology which makes such research possible.