In the 1960s, Bandura and his colleagues conducted a series of well-known observational learning studies called the Bobo Doll experiment. In the first experiment, preschoolers were exposed to aggressive or non-aggressive adult models to see if they would mimic the behavior of the model. The gender of the model is also different, some children observe the same-sex model, and some children observe the heterosexual model. In the case of radicals, the model makes verbal and physical attacks on the inflated Bobo doll in front of the child. After touching the model, the child was taken to another room to play a series of very attractive toys. In order to frustrate the participants, the child’s game stopped in about two minutes. At that time, the child was taken to the third room, which was filled with different toys, including a Bobo doll, where they could play for the next 20 minutes. Researchers have found that children in aggressive conditions are more likely to exhibit aggressive head and body attacks, including attacks on Bobo dolls and other forms of attacks. In addition, boys are more likely to be more aggressive than girls, especially if they are exposed to aggressive male models.