Solution:Freud proposed that psychological development in childhood takes place during five psychosexual stages: oral, anal, phallic, latency, and genital.
These are called psychosexual stages because each stage represents the fixation of libido (roughly translated as sexual drives or instincts) on a different area of the body.
Oral Stage (Birth to 1 year) - the mouthsucking/swallowing etc.
Anal Stage (1 to 3 years)- The anus - potty training/withholding are expelling feces.
Phallic Stage (3 to 6 years) - Sensitivity now becomes concentrated in the genitals and masturbation (in both sexes) becomes a new source of pleasure. Freud called the Oedipus complex (in boys) and the Electra complex (in girls). This is resolved through the process of identification, which involves the child adopting the characteristics of the same sex parent.
Latency Stage: (6 years to puberty) (latent means hidden): No further psychosexual development takes place during this state. The libido is dormant.
Freud thought that most sexual impulses are repressed during the latent stage, and sexual energy can be sublimated (re: defense mechanisms) towards school work, hobbies, and friendships.
Genital Stage (puberty to adult): This is the last stage of Freud's psychosexual theory of personality development and begins in puberty. It is a time of adolescent sexual experimentation.