Final answer:
The concept that identity is an evolving and internalized life story, as presented by McAdams, is true and underlines the importance of a personal narrative in the development of the self and its role in creating believable performances in acting.
Step-by-step explanation:
Identity development is deeply connected to the narrative of one's life experience, a concept McAdams first presented. This notion aligns with the understanding that an actor's internal reality and emotional investment are pivotal for a believable and truthful performance. It is acknowledged that one's sense of self is significantly shaped during adolescence, where Erikson's theory of 'identity versus role confusion' comes into play. A strong sense of self is crucial as it affects later stages, such as intimacy versus isolation in early adulthood. Educational and therapeutic curriculums leverage the narrative approach, where participants reflect on their personal stories and experiences to better understand their identity and past influences. This method has proven effective in enhancing self-awareness and guiding personal and social transformation.