Which developmental stage is associated with infancy in Freud's theory of psychosexual development?

The correct answer is the oral stage, which Freud identifies as the first stage of his psychosexual development theory. This stage occurs during infancy, roughly from birth to about 18 months. During this period, an infant's primary source of interaction with the world involves the mouth, which is the focal point for pleasure and exploration. Activities such as feeding, sucking, and biting are crucial as they provide nourishment and comfort, thus establishing a foundation for bonding between the infant and caregiver.

Freud believed that experiences during the oral stage could have lasting effects on an individual's personality and behavior in adulthood. For instance, issues that arise during this phase, often referred to as oral fixation, can lead to traits like dependency or aggression, depending on how needs are met during this critical time.

The other developmental stages mentioned do not correspond with infancy. The anal stage follows the oral stage, typically occurring from ages 18 months to 3 years, focusing on toilet training and control over bodily functions. The phallic stage follows next, from age 3 to 6, where the child becomes more aware of differences between the sexes and develops sexual identity. Lastly, the genital stage begins in adolescence and extends into adulthood, characterized by mature sexual intimacy and relationship development. By