About: Self-constancy

Self-constancy, also called self-object constancy and self-consistency, is a psychological concept of developmental cognitive ability. The theory was developed by Prescott Lecky in the 1920s, and the term "self-constancy" was coined by Heinz Hartmann in 1952. Self-constancy focuses on the regulation of thoughts and ideas, which generally develop from childhood. The constancy of ideas and the representation of the self are both essential for an average person. Self-constancy organizes an individual's thoughts and behavior to maintain consistency. Self-constancy relates to the development and success of interpersonal relationships, and defective self-consistency can sometimes result in borderline personality disorder.