Answer:
Identity confused crisis.
Step-by-step explanation:
Erik Erikson, the person who first used this terms, defined the failure to achieve ego identity, during adolescense, as Identity confused crisis. Yves, the boy from the exercise and using Erikson's term, is afflicted by this type of crisis.
This is determined during a stage of psychosocial development. Basically, adolescents are mentally faced with a large number of things: physical growth and sexual maturity, integrating ideas of others and themselves, a deeper understanding of the community and society in which they live in, etc. To face this they form a self-image that comes to solve this troubles. When that self-image is not enough, is still developing, can't solve this crisis, they enter in this identity confused crisis.