I have always been a fan of using social learning theory when working with my substance use clients, and I can totally see this with how my kids act. We went out as a Mario Cart family for Halloween last year - my son was Mario, daughter was princess peach, I was Luigi and my husband was the actual car.
My 4 year old had never heard of mario - she just wanted to be the princess. After actually playing Mario Cart and some other Mario game we have, I have noticed that when she "plays princess" she now acts less like Elsa and Anna from Frozen, and now tries to win.
Thanks for sharing