This Symposium Issue looks at how personal traits of international judges matter in their judging. The articles selected shed light on the ways that international judges’ personality, that is, their character differences and personal backgrounds, shape, control, or modify their conduct and their rulings. The articles in the Symposium reveal that individual international judges have different personal attributes and identities that affect: (i) different aspects of judicial reasoning, problem-solving and case management; (ii) the ways judges interact, deliberate and affect each other in collectively deciding cases; and (iii) the outcomes of international trials. This Symposium, therefore, looks beyond the traditional ‘legal formalistic’ understanding (prevalent also among international judges themselves) that judges – as impartial, rational, and mechanical decision-makers – simply apply existing, recognized rules or principles of law to the facts and questions before a court in the context of concrete cases without regard to any personal leanings
and biases. It examines how and to what extent judges at international courts make their choices conditioned on their personal identity characteristics, and when such characteristics exhibit greater or lesser effects on their decision-making.