In Dissociative Identity Disorder (DID), an introject alter is a part of the person's identity that takes on characteristics, traits, memories, or beliefs of a specific external person or source. This "introjected" information becomes part of the alter's identity. The alter may believe they are that external person, sometimes even to the point of mimicking their behaviors and preferences.
The development and characteristics of alters, including introjects, can be influenced by various factors, such as trauma, internal conflicts, and the experiences of the individual. In some cases, an alter may develop based on how the source person is perceived or understood by the individual with DID.
As the individual learns more about the source person or if new information comes to light, the introject alter's identity could potentially evolve or change to accommodate that new information. For example, if the source person's liking for lemons was previously unknown to the alter, discovering this information might lead the alter to incorporate it into their self-concept.
It's important to note that DID is a complex and individualized disorder, and not all individuals with DID will have introject alters or experience the same type of internal dynamics. The development and evolution of alters can be a coping mechanism to manage trauma, and alters may serve different purposes for the individual.
If you or someone you know is living with DID or experiencing dissociative symptoms, it's essential to seek professional help from a qualified mental health professional with experience in dissociative disorders. They can provide a proper diagnosis, understanding, and support tailored to the individual's specific needs.