Final answer:
Erikson identified the crisis of middle childhood as Industry vs. Inferiority, a stage where children develop competence or experience feelings of inferiority.
Step-by-step explanation:
Erik Erikson labeled the life crisis of middle childhood as Industry vs. Inferiority. During the elementary school stage (ages 7-11), children learn to compare themselves with their peers in areas such as schoolwork, sports, and social activities. Successfully navigating this stage leads to a sense of competence and a belief in their abilities, whereas failure may result in feelings of inferiority and inadequacy. It is important for parents and teachers to support children during this time to help them develop a sense of competence and encourage a belief in themselves.