Define "self-concept" in relation to child development.

Self-concept refers to a child’s understanding and perception of themselves, which encompasses their beliefs, feelings, and thoughts about their own identity. This includes aspects such as their personality traits, abilities, and values. During child development, self-concept plays a crucial role as it affects a child's self-esteem and how they interact with the world around them. A well-developed self-concept helps children recognize their strengths and weaknesses, leading to healthy social interactions and emotional well-being.

In contrast, socialization with peers primarily pertains to developing interpersonal skills and friendships, rather than an individual’s internal perception of self. A measurement of academic performance focuses solely on educational achievement and does not reflect a child's self-image or understanding of themselves. Lastly, the process of learning new skills pertains to acquiring specific abilities and knowledge, rather than the broader concept of self-identity and self-awareness inherent in self-concept.