In a later study that would never get ethical approval today, researchers conducted the almost identical experiment using puppies punished with real electric shocks. This time there was no charade. The animals were clearly suffering (although they were not receiving lethal shocks and the voltages were way below the descriptions the teachers thought they were administering). Half of the male teachers went all the way to the maximum punishment and, surprisingly, all of the female teacher participants obeyed the order to give the maximum shocks.