Expressed emotion (EE) refers to the quality of the emotional climate between a relative and a family member with a serious psychiatric disorder. Well-established, it has proven to be a reliable predictor of the relapse rate of psychiatric patients. In this article, the Camberwell Family Interview (CFI), the standard instrument, and I I alternative EE measures will be presented and discussed with regard to their psychometric properties. It is concluded that the CFI remains the best instrument for assessing the quality of the relationship. (C) 2001 Elsevier Science Ltd. All rights reserved.