Montana Certified Rehabilitation Registered Nurse (CRRN) Practice Test

Freud's developmental stages begin with the oral phase, which is the first stage in his theory of psychosexual development. This phase occurs from birth to about 18 months and is characterized by an infant's pleasure centers around the mouth. Activities such as sucking, biting, and chewing are crucial during this stage, as they are primary ways through which infants interact with their environment and derive pleasure.

Freud suggested that experiences during this phase significantly influence an individual's personality and behavior later in life. If an infant's needs are adequately met during this oral phase, they may develop a sense of trust and comfort. On the other hand, fixation at this stage can lead to issues with dependency or aggression in adulthood.

In comparison, the subsequent phases like the anal, phallic, and latent phases build on the early experiences established in the oral phase, but they each focus on different areas of development and represent further stages in Freud's overarching theory.