Final answer:
The personal fable is a concept in adolescent psychology that refers to a belief in one's invulnerability to harm. It can lead to potentially harmful behaviors during adolescence.
Step-by-step explanation:
The "personal fable" is a concept in adolescent psychology that refers to the belief that one is unique, special, and invulnerable to harm. It is a type of egocentric thinking that often occurs during adolescence due to the combination of increased abstract thinking abilities and the development of a strong sense of self. The personal fable can lead to potentially harmful behaviors, such as engaging in risky activities or disregarding consequences, because adolescents believe that negative outcomes won't happen to them.