In an effort to clarify the controversy, Ashkanasy & Daus (2005) identified three approaches to emotional intelligence, which they referred to as three “streams.” Stream 1 is based on the Mayer-Salovey four-branch model and is measured using an IQ-style ability measure called the MSCEIT (Mayer-Salovey-Caruso Emotional Intelligence Test) (Mayer et al. 2002). Stream 2 research refers to approaches that use the Mayer-Salovey (1997) definition of emotional intelligence but measure the construct using self- or peer-report measures. Stream 3 models of emotional intelligence do not use the Mayer-Salovey definition and are usually measured using self-reports. These scales have been criticized, however, because of their overlap with well-being and personality measures.