Europeanisation is a process, but theory of Europeanisation is a theory of impact and influence configured as a feedback between the EU and its member states, as well as international organisations, third states, and furthermore, between the EU and persons (both citizens of the EU and the citizens of the states outside of the EU). In researching the impact of European integration (and the EU itself) on specific persons, one should note that, for instance, Europeanisation of the Council of the EU officials is neither top- -down nor bottom-up Europeanisation, nor is it ad extra or ad intra one. The purpose of this article is to sequentially examine only one type of Europeanisation, namely ad personam (EAP), with the use of tools applied in constructivism. The study of ad personam Europeanisation is conducted here on the example of the Council of the European Union (CEU) officials.

The purpose of the article is to demonstrate that ideas can be treated as a factor explaining political stability and change. Based on the completed analytical tasks, it has been found that ideas have their own dynamics and therefore they deliver unique effects, influencing change or stability of policies. The article demonstrates that the impact ideas have on the political process depends on the understanding of human behaviour in the field of politics. The article reviews the ideational dimension with reference to behaviours covered by the rational choice theory, by historical, sociological and discoursive institutionalism and constructivism. As a result of the analytic tasks, certain differences have been revealed between the above mentioned approaches in terms of understanding the impact of ideas. What the approaches have in common is a close link between ideas and political actors. The article covers theoretical issues without considering methodology aspects. It is based on the outcomes of study projects carried out by authors recognized in the so-called school of ideas, formed in political science following the “ideational shift” during the 1990s and reflecting until the present day on the ideational dimension of politics.