This paper discusses the applicability and adaptability for evaluating reference interviews in library science of the Arizona Clinical Interview Rating Scale (ACIRS), a process-oriented scale originally developed in 1976 at the Arizona College of Medicine to evaluate the interview performance of medical students. The analysis surveys the content and reliability and validity data and discusses the appropriateness of the criteria and the presentation for reference interviews. It is concluded that the ACIRS is an effective interview scale emphasizing process-related criteria that can be modified fairly easily for application to pre-search interviews. (9 references) (GL)