Yes, you are correct in suggesting that individuals with narcissistic tendencies may struggle with object constancy, which can lead to a "out of sight, out of mind" mentality.
Object constancy refers to the ability to maintain a consistent emotional connection with someone, even when they are not physically present. It means being able to understand that a person continues to exist and have value even when they are not immediately observable. This concept is crucial in forming and maintaining healthy relationships because it allows for trust and emotional stability.
For narcissists, their focus tends to be primarily on themselves and their immediate needs for validation, admiration, and attention. As a result, they may have difficulty empathizing with others and connecting with them on a deeper, emotional level. When a person with narcissistic traits is not receiving the desired attention or validation, they might shift their attention away from the person and effectively forget about them until they are once again seeking validation or attention.
This can lead to the "out of sight, out of mind" behavior, where the narcissist loses interest in someone or disregards them when they are not in their presence. They may not invest much effort into maintaining the relationship or remembering the person's feelings and needs when they are not directly interacting with them.
It is important to note that narcissism exists on a spectrum, and not all individuals with narcissistic traits may display this behavior to the same extent. Also, psychological traits and behaviors can be complex, so it's essential to consider each individual's unique circumstances when discussing these concepts.