Abstract: Arbitration nature is eminently volitional, which makes the analysis of the limits and criteria used by the parties in the choice of arbitrators a complex task. Indeed, impartiality, independence and neutrality have been defined in very different ways by all arbitral institutions around the world, and parties tend to indicate arbitrators who are familiar to their religion, culture and language. Nevertheless, some experts support the advantages of appointing foreign arbitrators in international arbitration proceedings. It is thus up to the parties to try to balance all issues arising out of each particular case in order to make a good choice, as the arbitration success and quality are intimately related to the arbitrator nomination.

- 1. Introdução - 2. Imparcialidade, independência e neutralidade do árbitro indicado pela parte - 3. Vantagens da nomeação de árbitros - 4. Devem ser empregados critérios diferentes para se aferir a conduta do árbitro-presidente e a dos árbitros indicados pelas partes? - 5. Liberdade das partes v. imparcialidade, independência e neutralidade - 6. Dever de revelação do árbitro - 7. A entrevista ex parte - 8. Conclusão