This article describes the development and validation of 2 measures of emotional intelligence (EI): the Situational Test of Emotional Understanding (STEU) and the Situational Test of Emotion Management (STEM). Study 1 (N=207 psychology students) examines multiple sources of validity evidence: relationships with EI, vocabulary, personality, and emotion-related criteria. Study 2 (N=149 white-collar volunteers) relates STEU and STEM scores to clinical symptoms, finding relationships to anxiety and stress for both tests, and to depression for the STEM. It is concluded that new performance-based approaches to test development, such as the present ones, might be useful in distinguishing between test and construct effects. Implications for expanding theory and for developing EI interventions are discussed.