The main difference between countries which are classified as developed, versus those classified as developing, are levels of education and income.

Garland chews gum constantly. He gets anxious when he runs out of it. Freud would

He is overconcerned with having fresh breath for social situations. He is harboring an unresolved conflict from the oral stage of development. He has learned that chewing gum may reduce the development of dental caries. He is imitating his father, who also chewed gum.

Prenatally, development happens in a "near to far" pattern known as:

proximodistal. cephalocaudal. neurogenesis. synaptogenesis.