DOPAD ANTIKORUPČNÍCH OPATŘENÍ NA ÚROVEŇ VNÍMANÉ KORUPCE VE VYBRANÝCH ZEMÍCH OECD ZA OBDOBÍ 2010 - 2025

This bachelor's thesis deals with the analysis of the impacts of anti-corruption measures on the level of perceived corruption in selected OECD countries. The main objective of the thesis is to evaluate the effectiveness of legislative packages including whistleblower protection and the introduction of mandatory electronic public procurement using modern methods of causal inference. The theoretical part of the thesis is based on the economic analysis of crime and develops the concepts of the transparency paradox and institutional complementarity. The empirical analysis is conducted on panel data for the period 2002 to 2017 using the Callaway and Sant'Anna (2021) estimator for multiple time periods. The results show that the introduction of comprehensive anti-corruption reforms leads to a statistically significant decrease in the corruption control index in the short and medium term, which confirms the existence of an information shock and a transparency paradox. The thesis also provides empirical evidence of the necessity of synergy between the two instruments under study, as isolated reforms do not show a measurable effect on the quality of the institutional environment. The added value of the work lies in identifying the long-term persistence of these effects in advanced democracies and in critically assessing the limitations resulting from the small sample of countries treated.