This panel brings together various scholars of law and politics from Europe and United-States whose research in various fields (constitutional law, discrimination law and theory of law). They look at the contemporary outcomes of mechanisms of judicial decision making. As opposed to classical literature on legal reasoning, which is much concerned with legal interpretation, this panel aims to put forward an overview about novel approaches to judicial decision making process. Véronique Champeil-Desplats will expose the theory of legal constraints which highlights the importance of “legal factors“ in this process; through an analysis of discrimination against multiracial people (racially-mixed), Tanya K. Hernandez will explore the legal reasoning in the US Supreme Court ; finally, in their three contributions, Eleonora Botini, Toon Monen, and Michael Koskas will focus on the role of the micro-practices that takes place within the Supremes Courts (Belgium, France, Italy…).