In his book Emotional Intelligence, what basic argument does Daniel Goleman put forth? "Interpersonal competence" is a basic managerial skill. EQ rather than IQ accounts for most of the variance in effectiveness among managers, particularly at the senior level. Individuals with a high ability to understand and appraise others' emotions are more receptive to changes in their social environments. Individuals with high EQ and IQ traits form stronger and more supportive social networks.