Bandura developed what famously became known as the Bobo Doll experiments. In these studies, children watched adults model either violent or passive behavior towards a toy, the Bobo Doll. What the children saw influenced how they themselves subsequently interacted with the doll. Specifically, children who observed violent behavior imitated this behavior and were verbally and physically aggressive toward the doll. Children who witnessed nonviolent behavior behaved less aggressively toward the doll. In recent years, some psychologists have called Bandura’s original findings into question, labeling his experiments as biased, poorly designed, or even unethical.