Beyond the deep satisfaction you feel when shining a spotlight on others’ admirable acts, here’s another reason to praise people: spontaneous trait transfer.
As Lynda Mae summarizes, “When we gossip, we tend to be seen as having the very traits we describe in others. For example, someone who bemoans the tax evasion of a colleague may actually be viewed as more dishonest.”
From John Skowronski's research we've discovered that whatever you say about other people inevitably become a part of how those who hear you will perceive you. The spotlight reflects back on you. People will perceive in you the traits you describe in others. Of course, the flip side also happens. Describe someone’s pushy behavior and those who hear will see it in you.