Texas state Sen. Wendy Davis shakes hands with state Attorney General Greg Abbott after their debate in the Rio Grande Valley on Friday. Gabe Hernandez/AP hide caption

itoggle caption Gabe Hernandez/AP

Psychologists say spanking and other forms of corporal punishment don't get children to change their behavior for the better. Science Photo Library/Corbis hide caption

itoggle caption Science Photo Library/Corbis

Don Spirit is pictured in this 2001 handout photo obtained by Reuters on Friday. Police identified Spirit as the man who gunned down his six grandchildren and daughter before taking his own life. Reuters/Landov hide caption

itoggle caption Reuters/Landov