Final answer:
A new component of self-concept that develops as the categorical and emotional selves mature is the social self, which is informed by interactions with others and societal expectations.
Step-by-step explanation:
As the categorical self and the emotional self mature, a new component of self-concept that is likely to develop is the concept of the social self. When individuals enter early adulthood, they begin to explore intimate relationships, which necessitates having a well-established sense of self, as highlighted by Erik Erikson's stages of psychosocial development. During adolescence, this sense of self is sharpened through the process of identity formation, where individuals ask critical questions about who they are and what they want to do with their life. It's through this introspection and external interaction that they establish a robust self-concept. Development of the social self also involves understanding and learning the generalized other - common behavioral expectations of society. With a stabilized identity and emotional understanding, individuals can better envisage how they are perceived by others. This helps facilitate deeper social interactions and contributes to the progress of intimate relationships, thereby enriching their self-concept with new social dimensions.