The study of population.
A period count of the current population.
The number of individuals per unit area.
Arithmetic Population Density
The population of a country or region expressed as an average per unit area.
Physiologic Population Density
The number of people per unit area of arable land.
Structure of a population in terms of age, sex and other properties. (ex. marital status and education)
A graphic representation of the age & sex of a population.
Crude Birth Rate (CBR)
The total number of live births in a year for every 1,000 people alive in the society.
Crude Death Rate (CDR)
The total number of deaths in a year for every 1,000 people alive in the society.
The death rate of infants in their first year of life.
Total Fertility Rate (TFR)
The average number of children a woman will have throughout her childbearing years.
Demographic Transition (cycle)
A model of the effect of economic development on population growth based on births, deaths, and other statistics.
The number of years needed to double a population, assuming a constant rate of natural increase.
Growth pattern in which the individuals in a population reproduce at a constant rate.
Expansion that increases by the same amount during each time interval.
The growth rate of a population; the difference between birthrate and death rate.
The rapid growth of the world's human population during the past century.
Stationary Population Level (SPL)
The level at which a national population ceases to grow.
A compass direction such as north or south.
Direction based on a person's perception of an area.
The distance that can be measured with a standard unit length, such as a mile or kilometer.
Approximate measurement of the physical space between two places.
Negative conditions and perceptions that cause residents to move away.
Positive conditions and perceptions that cause residents to move in.
Activity (Action) Space
The space within which daily activity occurs.
Movement that has a closed route and is repeated annually or seasonally. (ex. nomadism)
Movement among a definite set of places. (example of cyclic movement)
Movements that are taken based on a seasonal basis. (example of cyclic movement)
Movement from one area to another.
Movement from an area, especially migration, from your native country in order to settle in another.
When people are removed from their countries and forced to live in other countries because of war, natural disaster, and government. (ex. Atlantic Slave Trade, Jewish Diaspora)
Movement in which people relocate in response to perceived opportunity; not forced.
Movement within a nation-state, such as westward and southward movements in the US.
Migration across an international border.
Permanent movement from one region of a country to another.
Migration to a distant destination that occurs in stages. (ex. from farm to nearby village and later to a town and city)
Migration back to an original area in which people had left. (ex. migration increases after natural disasters, yet many eventually return after a time)
The presence of a nearer opportunity that greatly diminishes the attractiveness of sites farther away.
The diminishing in importance and eventual disappearance of a phenomenon with increasing distance from its origin.
Person who flees to another country to escape persecution or disaster.
Refugees encamped in a host country or host region while waiting for resettlement.
Person or persons who have been permanently displaced from their home.
Refugees who have crossed 1 or more international boundaries during their dislocation.
Refugees who have abandoned their town or village but not their country.
Laws and regulations of a state designed specifically to control immigration into that state.
Eugenic Population Policy
Government policy designed to favor one racial sector over others.
Expansive Population Policy
Government policy that encourages large families and raises the rate of population growth.
Restrictive Population Policy
Government policy designed to reduce the rate of natural increase. (ex. Chinese can only have 1 child)
Negative Population Growth
The decline in population due to less than replacement births or extensive deaths.