Selman and Bryne (1974) presented children aged between 4 and 10 with 2 interpersonal dilemmas and then, in interviews, got them to discuss the perspectives of different characters involved in each dilemma. Children aged 4 to 6 years tended to show evidence of having an egocentric viewpoint, perceiving things from their own perspective, whilst children aged between 6 and 8 years tended to show evidence of being in the social informational role-taking stage, understanding that people have different viewpoints, but were able to consider only one viewpoint at a time. Children aged 8-10 were increasingly able to see things from different perspectives. The results support Selman's theory, as they imply that perspective-taking increases with age in set stages.