Warmth as a leadership skill

Why warmth is the underappreciated skill leaders need.  Social psychologists have observed that our perception of other people is based on two things, how capable, successful, and intelligent we consider  the person to be and how likeable or trustworthy a person seem, that is, how competent and warm a person is and that these are imperative skills for leaders.  However it does not mean a leader should just smile more broadly, it requires a more purposeful and considered approach.