However, early puberty is not always positive for boys; early sexual maturation in boys can be accompanied by increased aggressiveness due to the surge of hormones that affect them.
Because they appear older than their peers, pubescent boys may face increased social pressure to conform to adult norms; society may view them as more emotionally advanced, despite the fact that their cognitive and social development may lag behind their appearance.
In addition to changes in height, adolescents also experience a significant increase in weight (Marshall, 1978).
The weight gained during adolescence constitutes nearly half of one's adult body weight.
Males experience their growth spurt about two years later, on average, than females.
Consequently, girls who have a high-fat diet and who are not physically active begin menstruating earlier, on average, than girls whose diet contains less fat and whose activities involve fat reducing exercise (e.g. They have the advantage in capturing the attention of potential partners and in becoming hand-picked for sports.In studying adolescent development, adolescence can be defined biologically, as the physical transition marked by the onset of puberty and the termination of physical growth; cognitively, as changes in the ability to think abstractly and multi-dimensionally; or socially, as a period of preparation for adult roles.Major pubertal and biological changes include changes to the sex organs, height, weight, and muscle mass, as well as major changes in brain structure and organization.Physical growth (particularly in males), and cognitive development can extend into the early twenties.Thus age provides only a rough marker of adolescence, and scholars have found it difficult to agree upon a precise definition of adolescence.