IB Geography Topic 1.3.1 Trends in Family Size, Sex Ratios, and Aging Revision Notes (SL/HL)

IB Geography Topic 1.3.1 Trends in Family Size, Sex Ratios, and Aging Revision Notes (SL/HL) | RevisionDojo

Written by official IB examiners

Demographic Shifts Lead to Sizable Social Implications

Definition

Demographic shift

A demographic shift refers to changes in the characteristics of a population over time, including its size, age structure, family composition, and sex ratios.

These shifts are influenced by factors like birth rates, death rates, migration, and social norms.
They have profound implications for economies, societies, and policies.

Family Size: Shrinking in HICs and MICs, Larger in LICs

Why Are Families Shrinking in HICs and MICs?

In High-Income Countries (HICs), family sizes decreased significantly and have been low over the past decades. Currently the same process is taking place in MICs, especially in Upper Middle-Income Countries.
This trend is driven by several factors:
1. Economic Costs: Raising children is expensive, with costs including education, healthcare, and housing
2. Cultural Change: Emancipation of women combined with other factors allowed them to make independent decisions about life-style choices, reproductive health, marriages, etc.
3. Career Priorities: Many individuals delay or forgo having children to focus on careers.
4. Access to Contraception: Widespread availability of family planning allows for greater control over reproduction.
5. Urbanization: In urban areas, space is limited, making large families less feasible.

Example

In Japan, the average household size has fallen from 4.14 in 1960 to 2.33 in 2020.
This decline reflects broader societal shifts towards smaller families.

Why Do Families Remain Larger in LICs?

In Low-Income Countries (LICs), family sizes tend to be larger due to:
1. Economic Benefits: Children often contribute to household income through labor.

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Duis aute irure dolor in reprehenderit

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Note

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Excepteur sint occaecat cupidatat non proident

Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit.

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

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Demographic Shifts Lead to Sizable Social Implications

Definition

Demographic shift

A demographic shift refers to changes in the characteristics of a population over time, including its size, age structure, family composition, and sex ratios.

These shifts are influenced by factors like birth rates, death rates, migration, and social norms.
They have profound implications for economies, societies, and policies.

Family Size: Shrinking in HICs and MICs, Larger in LICs

Why Are Families Shrinking in HICs and MICs?

In High-Income Countries (HICs), family sizes decreased significantly and have been low over the past decades. Currently the same process is taking place in MICs, especially in Upper Middle-Income Countries.
This trend is driven by several factors:
1. Economic Costs: Raising children is expensive, with costs including education, healthcare, and housing
2. Cultural Change: Emancipation of women combined with other factors allowed them to make independent decisions about life-style choices, reproductive health, marriages, etc.
3. Career Priorities: Many individuals delay or forgo having children to focus on careers.
4. Access to Contraception: Widespread availability of family planning allows for greater control over reproduction.
5. Urbanization: In urban areas, space is limited, making large families less feasible.

Example

In Japan, the average household size has fallen from 4.14 in 1960 to 2.33 in 2020.
This decline reflects broader societal shifts towards smaller families.

Why Do Families Remain Larger in LICs?

In Low-Income Countries (LICs), family sizes tend to be larger due to:
1. Economic Benefits: Children often contribute to household income through labor.

Definition

Paywall

(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

1 Changing Population3 subtopics

2 Global Climate - Vulnerability and Resilience3 subtopics

3 Global Resource Consumption and Security3 subtopics

4 Power, Places and Networks (HL only)3 subtopics

5 Human Development and Diversity (HL only)3 subtopics

6 Global Risks and Resilience (HL only)3 subtopics

Option A Freshwater - Drainage Basins4 subtopics

Option B Oceans and Coastal Margins4 subtopics

Option C Extreme Environments4 subtopics

Option D Geophysical Hazards4 subtopics

Option E Leisure, Tourism and Sport4 subtopics

Option F The Geography of Food and Health4 subtopics

Option G Urban Environments5 subtopics

IB Geography 1.3.1 Trends in Family Size, Sex Ratios, and Aging Notes

1 Changing Population3 subtopics

2 Global Climate - Vulnerability and Resilience3 subtopics

3 Global Resource Consumption and Security3 subtopics

4 Power, Places and Networks (HL only)3 subtopics

5 Human Development and Diversity (HL only)3 subtopics

6 Global Risks and Resilience (HL only)3 subtopics

Option A Freshwater - Drainage Basins4 subtopics

Option B Oceans and Coastal Margins4 subtopics

Option C Extreme Environments4 subtopics

Option D Geophysical Hazards4 subtopics

Option E Leisure, Tourism and Sport4 subtopics

Option F The Geography of Food and Health4 subtopics

Option G Urban Environments5 subtopics

Demographic Shifts Lead to Sizable Social Implications

Family Size: Shrinking in HICs and MICs, Larger in LICs

Why Are Families Shrinking in HICs and MICs?

Why Do Families Remain Larger in LICs?

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account

Demographic Shifts Lead to Sizable Social Implications

Family Size: Shrinking in HICs and MICs, Larger in LICs

Why Are Families Shrinking in HICs and MICs?

Why Do Families Remain Larger in LICs?

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

Unlock the rest of this chapter with a free account