The document discusses Robert J. Havighurst's developmental tasks theory, which proposes that individuals progress through life in stages defined by their successful completion of developmental tasks typical for their age and culture. These tasks influence an individual's psychological, social, and biological development, and successful mastery provides satisfaction and approval while unsuccessful attempts can lead to difficulties. The document applies this theory to examine an 11th grade student's progression through developmental tasks and readiness for the transition from adolescence to adulthood.