Demography Flashcards
Definition
• Study of Population trends and their causes and consequences
Causes
• Causes of population growth are grouped as natural (births and deaths) and migration (immigration and emigration)
Measures of birth
- Raw numbers of births
- Birth rate (number per 1000 members of the population)
- TFR (total fertility rate) average number of children a woman has during her lifetime
Consequences of birth rate
• Falling birth rate means a falling population unless death rate also falls or is migration patterns compensate
Reasons for drop in birth rate
o Falling infant mortality- 5/1000- as less infants die, parents stop having more children to compensate. IMR has fallen because of better hygiene, housing and sanitation etc
o Change in the role of women- better access to divorce, abortion, contraception, better education and career prospects have changed attitudes towards having children, as it can be postponed and avoided
o Child centred-ness- children are an economic liability, they are expensive because of long periods of dependency caused by requirements to be in education.
Measures of death
- Raw Numbers of deaths
- Death rate (number per 1000 member of the population)
- Infant Mortality Rate (deaths under the age of 1 per 1000 live births)
Patterns of death
- Death rate has dropped from 18 to 9 between 1900 and 2005
- IMR has fallen from 154 in 1900 to 5 in 2005
- Falling death rate has balanced out the falling birth rate, increased life expectancy (male: 77, female: 81) causes an ageing population
Reasons for changing death rate
o Improved Public Heath- public sanitation, housing improvements, clean water etc.
o Medical Improvements- immunisation has eradicated some diseases though diseases of affluence (heart disease, cancer etc) have risen, antibiotics
o Better nutrition:as a result of laws controlling food standards
o Occupation change- less manual work
o Improved welfare provision- vulnerable groups are better cared for (eg elderly)
Consequences of death rate
- Age pyramid is more like a rectangle, because of ageing population
- Declining need for new schools with more demand for elderly care homes
- Rise in one-person households (mostly females as they live longer)
- Causes policies to benefit elderly as they are more likely to vote (78% turnout 2015 election, with a overall turnout of 66.1%)
- Dependency ratio increased, which can effect all aspects of life
Immigration definition
number of people entering a country
Emigration definition
number of people leaving a country
Net migration definition
immigration - emigration
Migration patterns
- Until the 1980s there way more emigration than immigration
- Mainly to the USA, Australia, New Zealand and Canada (more recently to EU countries)
- Mostly young adults
- Economic reasons
- After WW2, many fled the weak economy of the UK
Immigration
- In the last 20 years more immigrants have been from Europe
- Main reasons are economic and political persecution (UK advertised to Caribbean for workers in 50s and Asians were driven out of Eastern Africa in 60s and 70s)
- Since the 1980s borders have limited immigration from non EU countries
Effects of migration
- Net migration is now 200,000 per year
- Immigration has been increased by globalisation
- Immigration increases diversity
- Some immigrants have professional skills and bring wealth to the economy
- 2015 General Election highlighted immigration as a major concern Marxists would say this provides a basis for the ruling class to control the working class