The youngest child has an inferiority complex and therefore often develops at a slower rate than their older siblings.

Inferiority Complex

A psychological condition in which a person feels a deep sense of inadequacy and incompetence, often leading to overcompensation in other areas.

Youngest Child

Describes a child who is the last born in the family hierarchy.

Older Siblings

The siblings who were born before others in a family, often considered as having influence on the younger siblings' development.