The experiment he did was called ‘Bandura’s BoBo Dolls’ in which he showed a video to children of adults acting aggressively towards a doll.
In one video, the adults were only acting aggressively. In the second video the adults were rewarded when acted aggressively and in the last video, adults were punished when the acted aggressively.
When there was no punished and positive reinforcer’s used, the children responded aggressively towards the doll. However, children responded