Final answer:
The question refers to Freud's theory of psychosexual development, specifically the phallic stage and the subsequent genital stage, which are key periods in a child's early development that influence their adult personality and sexual maturity.
Step-by-step explanation:
The area of psychology that this question pertains to is psychosexual development, as theorized by Sigmund Freud. Freud's theory includes various developmental stages, among which the phallic stage occurs around ages 3-6 years. During this period, children become more aware of their bodies and start to recognize the differences between boys and girls, leading to the development of the Oedipus and Electra complexes.
Following the phallic stage is the latency period, where children's sexual feelings are dormant as they focus on other pursuits. Eventually, they enter the final stage, the genital stage, which begins at puberty and is marked by a reawakening of sexual urges. These urges are redirected toward socially acceptable partners, and successful navigation through this stage leads to a well-balanced adult.
Sexual development is also influenced by puberty, where hormonal changes lead to the maturation of the reproductive systems and the development of secondary sex characteristics. This biological process happens in both males and females and is controlled by a release of hormones from the hypothalamus, the anterior pituitary, and the gonads.