Praising Children For Effort Rather Than Ability

 https://sci-hub.se/10.1037/0022-3514.75.1.33

Mueller, C. M., & Dweck, C. S. (1998). Praise for intelligence can undermine children’s motivation and performance. Journal of Personality and Social Psychology

Perucetus colossus

There once was a whale named Perucetus 

Who had bones as dense as a Thetis

He swam in the shallows 

And ate lots of molluscs 

But he couldn’t outrun a Ornithomimus