Late childhood refers to ages 6 through 12, when the first signs of puberty often emerge. Both boys and girls experience significant growth during this period. Developmental tasks include physical, social, cognitive, and emotional development. Puberty is the period of sexual maturation, beginning between ages 8-13 in girls and 9-14 in boys. It involves biological changes that also impact psychosocial and emotional development, and can increase sexual interests like dating, intimacy, and masturbation.