When Braden was nine, he saw one of his classmates fall under the wheels of a school bus as it pulled away from the curb. Today, at the age of 34, he has no memory of the accident. The evening news carried a flashback of the accident that happened 25 years ago, and Braden still didn't remember being at the scene when the accident happened. According to Freud, it seems that Braden's memory of the accident is contained in his unconscious mind O ego O superego O preconscious mind ​