Psychologically, Sigmund Freud (1856–1939) proposed that if the nursing child’s appetite were thwarted during any libidinal development stage, the anxiety would persist into adulthood as a neurosis (functional mental disorder). Therefore, an infantile oral fixation (oral craving) would be manifest as an obsession with oral stimulation; yet, if weaned either too early or too late, the infant might fail in resolving the emotional conflicts of the oral, first stage of psychosexual development and he or she might develop a maladaptive oral fixation.
The infant who is neglected (insufficiently fed) or who is over-protected (over-fed) in the course of being nursed, might become an orally-fixated man or woman. Said oral-stage fixation might have two effects: (i) the neglected child might become a psychologically dependent adult continually seeking the oral stimulation denied in infancy, thereby becoming a manipulative person in fulfilling his or her needs, rather than maturing to independence; (ii) the over-protected child might resist maturation and return to dependence upon others in fulfilling his or her needs. Theoretically, oral-stage fixations are manifested as garrulousness, smoking, continual oral stimulus (eating, chewing objects), and alcoholism. Psychologically, the symptoms include a sarcastic, oral sadistic personality, nail biting, oral sexual practices (fellatio, cunnilingus, analingus, irrumatio), et cetera
hmmm, someone isnt studying hard enough.... methinks tisnt me