What is the first concept that babies learn in relation to the categorical self?

The correct answer highlights that the first concept babies learn in relation to the categorical self is age. Infants begin to develop a basic understanding of time and personal development, which includes recognizing changes in their own bodies and experiences over the first few years of life. This awareness of age helps them categorize themselves in relation to others and understand their growth.

The recognition of age forms the groundwork for additional aspects of the categorical self, such as emotional and social factors, which they will begin to comprehend as they grow older. This foundational concept aids in the development of their identity and influences how they perceive their place in the world.

Although size, skills, and gender are also important aspects of self-identity that children come to recognize later on, age is usually the first concept as it is linked to their overall development and progression through various stages of growth.