There are many different definitions of what emotional intelligence is and exactly what components should be included to understand it. The most basic model of emotional intelligence is the "four-branch model" described by John Mayer and Peter Salovey in 1997. The key concepts included in the four-branch model are: "emotional intelligence is the ability to perceive emotions, to access and generate emotions so as to assist thinking, understand emotions and emotional meanings, and reflexively regulate emotions so as to promote both better emotions and thoughts (Mayer & Salovey, 1997).” The scientific definition of emotional intelligence, according to John Mayer, Peter Caruso and Peter Salovey is that "emotional intelligence refers to the ability to recognize the meanings of emotions and their relationships, and to reason and solve problems based on them. Emotional intelligence is involved in the ability to perceive emotions, assimilate feelings related to emotions, understand information from those emotions, and manage them (Mayer, Caruso, & Salovey, 2000)." Daniel Goleman describes emotional intelligence as "the ability to recognize our feelings and those of others, to motivate ourselves and to manage emotions well in ourselves and in our relationships (Goleman, 2000).” Goleman goes on to explain that emotional intelligence can be broken down into two core competencies. These skills include personal competence and social competence. Personal competence includes traits such as self-awareness, defined as being aware of what you feel; and self-management, which is what you do with your feelings once you are aware of what you feel or exercise control over your feelings. Social competence......at the center of the article......Locke, Edwin A. (2005). Because emotional intelligence is an invalid concept. Journal of Organizational Behavior, 26(4), 425-431. doi: 10.1002/job.318Lopes, P.N., Grewal, D., Kadis, J., Gall, M., & Salovey, Peter. (2006). Evidence that emotional intelligence is related to job performance, affect, and attitudes at work. Psicotema, 18(1), 132-138.Mattiuzzi, Paolo G. (2008, 2008). Everyday Psychology Retrieved April 3, 2011, from http://everydaypsychology.com/2008/12/emotional-intelligence-im-not-feeling.htmlMayer, John D., Caruso, David R., & Salovey, Peter. (2000). Emotional intelligence meets traditional standards for an intelligence. Intelligence, 27(4), 267-298. Mayer, John D., & Salovey, Peter. (1997). What is emotional intelligence? In Peter Salovey and DJ Sluyter (eds.), Emotional Development and Emotional Intelligence. New York, NY: Basic Books.