| A | B |
| growth | development |
| learning theories | ideas about how humans learn |
| aging | growing older |
| Critical Period | a time in development when a specific type of learning can happen |
| microsystem | the objects and people in the human's immediate surrounding environment (eg, the home) |
| mesosystem | represents the individuals which help the family (eg. teachers & schools) |
| macrosystem | the group of subcultures and cultures in which the microsystem, the mesosystem and the exosystem are embedded |
| exosystem | is the social settings, which a person may not experience but which still influence their development (eg, the culture & nation) |
| Environmental Model | is a theory that the environment affects human development |
| the human life cycle | the development from an embryo to an infant to an old person |
| a neonate | a baby from birth to the age of one month |
| an infant | a child from one month to one year of age |
| a toddler | a child age 1 to 2 years who is learning to walk |
| a preschooler | a young child from age 2-6, before entering formal Kindergarten |
| a school-age child | a child who attends school and is between the ages of 6-12 |
| an adolescent | a human between the ages of 12-18 |
| a young adult | a human between the ages of 18-25 |
| a middle aged person | a human between the ages of 30-55 |
| an older person | a human aged 60 years or older |
| death | the process of dying |