All I know is I was talking about what they showed in a documentary I watched called Slavery And The Making Of America.
You can see info about the documentary and it's sources here: http://www.pbs.org/wnet/slavery/
About as truthful as Bill Clinton stating, 'I did not have sex with that women', or Tawana Brawley's accusation. I prefer to read accounts from the ex-slaves themselves, collected by the federal government in The Slave Narratives, and other personal accounts of the period.