I believe that empathy is the one of the most important concepts that can transform the way we communicate. When we put ourselves in another person's shoes and attempt to feel what they are feeling, our messages will connect with others at a whole other level. As the video explains, even an interaction at a McDonald's drive-through window--that might ordinarily seem routine, shallow, and automatic--can be filled with empathy with the right perspective.

Expert power is one of the types of power or bases of power explained by French and Raven (1959). Expert power is one of the most interesting social influence approaches because expertise is not connected to an organizational position. Essentially, expertise can come from anybody, a doctor, lawyer, engineer, or other experts that may or may not come with any supervisory responsibilities, as the video explains.  

Referent power refers to the influence leaders have because people admire and look up to them. As French and Raven explain, when a follower likes a person and wants to be close to them (or maintain closeness), they will follow the leader's example. We see this in the power of celebrity endorsements. An influential person may not even realize that have referent power as the video explains. Clearly, referent power makes influencing people much easier than relying on some of the other bases of power. 

Legitimate power is one of the six bases of power explained by French and Raven many years ago. It is a foundational type of power but one that is often overused by inexperienced leaders. The video gives an in-depth explanation. 

Coercive Power, explained French and Raven, is a foundational type of power. However, of the bases of power, it is also one that should not be overused.