In his review of the literature on models and measures of emotional intelligence (EI), Ackley (2016) did not include enhancements to the Emotional Competency Inventory (ECI) since 2006, when it was revised and renamed the Emotional and Social Competency Inventory (ESCI). In 2006, the test was substantially revised and improved. The ESCI reflects that the instrument measured not just the intrapersonal recognition and management of one's own emotions but also how they influence interpersonal interactions with other people, the recognition and management of others' emotions. Both the Other version (completed by informants) and the self-assessment version demonstrated appropriate factor loadings for each item on each scale in exploratory factor analyses, model fit to rigorous standards for each scale in confirmatory factor analyses, and convergent and discriminant validity against appropriate criteria for each scale within each version. The ESCI, as completed by others, predicted leadership effectiveness in a number of studies using various dependent measures. These studies are important because several of them showed that behavioral ESCI is a more powerful predictor of real-world outcomes than g and personality. We call this a Stream 4 or behavioral level measure of EI. It does not rely on self-assessment. A more comprehensive view of EI would include multiple levels of EI and distinguish behavioral measures. The ESCI is used in training programs, coaching, undergraduate and graduate courses in many disciplines worldwide to help develop more EI to dramatic effectiveness on the many longitudinal studies published.