Alfie Kohn is an American author and lecturer who has explored a number of topics in education, parenting, and human behavior. He is a proponent of progressive education and has offered critiques of many traditional aspects of parenting, managing, and American society more generally, drawing in each case from social science research. Wikipedia*
On the C-SPAN Networks:
Alfie Kohn has one video in the C-SPAN Video Library; the first appearance was a 1999 Speech.