Final answer:
Rapid weight gain during infancy and family stress can predict earlier puberty in both girls and boys. Factors such as nutrition, genetics, environment, and psychological stress can influence the age at which puberty begins.
Step-by-step explanation:
Rapid weight gain during infancy and family stress can predict earlier puberty in both girls and boys. Studies have shown that factors such as nutrition, genetics, environment, and psychological stress can influence the age at which puberty begins. In addition, the amount of stored fat in an individual, which is regulated by the hormone leptin, can also play a role in determining the onset of puberty. It is important to note that early maturing girls and late maturing boys may experience certain challenges and risks associated with puberty.