Compared to earlier in childhood, tweens have a relatively rich self view. Due to increasing experiences and improving cognitive skills, self concept continues to grow as kids move into high school.
Self concept is related to self esteem, but the terms are not synonymous. A person's concept of himself affects self esteem. In other words, self concept refers to a broader understanding of self than self esteem. In addition, self esteem is based on an evaluation of one's own abilities, while self concept is less judgmental in nature.
Manning, Maureen A. Self-Concept and Self-Esteem in Adolescents. Student Services. February 2007. Accessed on May 9, 2011 at www.nasponline.org/families/selfconcept.pdf