The development of the “twins” on Julius and his brother, Vincent was followed Bandura;s social learning theory. Bandura’s social learning theory have a great influencial of learning and development on the children in society nowadays. There are three concept in Bandura’s social theory, which are observation, learning and also modelling. Bandura social theory proposed that learning can also occur simply by observing the actions of others (Bandura A 1977). People can learn new information and behaviours by watching other people behaviour and action. This is known as observational learning or modelling. Bandura’s famous Bobo doll experiment shown that people can learn through observation. He demonstrated that children learn and imitate behaviours they have observed in other people on the Bobo doll. The experiment was conducted whereby firstly, the children in Bandura’s studies observed an adult acting violently toward a Bobo doll. After that, the children were later allowed to play in a room with the Bobo doll, and they began to imitate the aggressive actions they had previously observed from the adult. The children started to hit, punch and also using aggressive action and verbal word on the Bobo doll. Secondly, the children in Bandura’s studies observed an adult acting with non-aggressive model and the last one is no model or group control model.

According to Learning Theories article, social learning theory is interconnect with behaviourist and cognitive learning theories