Soft skills humans rather than quantitative intelligence. Many industries today give prominence to soft skills of their employees. It is through a 1972 US Army training manual identified formal usage of the term "soft skills" began. Soft skills are a cluster of productive personality traits that characterize one's relationships in a milieu. These skills can include social graces, communication abilities, language skills, personal habits, cognitive or emotional empathy, time management, teamwork and leadership traits. A definition based on review literature explains soft skills as an umbrella term for skills under three key functional elements: people skills, social skills, and personal career attributes.
Emotional intelligence in general, and that it even runs contrary to what researchers have come to expect when studying types of intelligence: "[Goleman] exemplifies more clearly than most the fundamental absurdity of the tendency to class almost any type of behavior as an 'intelligence'... If these five 'abilities' define 'emotional intelligence', we would expect some evidence that they are highly correlated; Goleman admits that they might be quite uncorrelated, and in any case if we cannot measure them, how do we know they are related? So the whole theory is built on quicksand: there is no sound scientific basis." Similarly, Locke (2005)