been found to decrease between the ages of 15 and 16. However, adults are also susceptible to be egocentric or to have reactions or behaviors that can be categorized as egocentric. Frankenberger tested adolescents (14–18 years old) and adults (20–89) on their levels of egocentrism and self-consciousness. It was found that egocentric tendencies had extended to early adulthood and these tendencies were also present in the middle adult years. Baron and Hanna looked at 152 participants and tested to see how the presence of depression affected egocentrism. They tested adults between the ages of 18 and 25 and found that the participants who suffered from depression showed higher levels of egocentrism than those who did not. Finally, Surtees and Apperly found that when adults were asked to judge the number of dots they see and the number of dots the avatar in the computer simulation sees, the presence of the avatar interfered with the participants' judgment-making during the trials. Specifically, these were the trials where the number of dots seen by the participant was inconsistent from the number of dots the avatar saw. Such effect on the participants diminished when the avatar was replaced with a simple yellow or blue line, which concluded that somehow the avatar having a personal attribute implicitly caused the participants to include its "vision" into their own decision making. That said, they made more errors when they saw prompts such as "the avatar sees N" when N was the number of dots the participant saw and not the avatar, which shows that egocentric thought is still predominant in making quick judgments, even if the adults are well aware that their thoughts could differ from others. See also References Further reading External links The Human Mind Is Naturally Prone To the Following Egocentric Tendencies by Foundation for Critical Thinking Barriers to critical thinking Developmental psychology Ego psychology Narcissism