The optimum population is the population that, when combined with the country's other available resources or methods of production, yields the highest return or revenue per head. Confucius was the first to propose the notion of the optimal population. Edwin Cannan proposed the optimum theory of population in his book Wealth (1924). Robbins, Carr-Saunders, and Dalton popularised the hypothesis. This article will explain to you the Optimum Population Theory which will be helpful in Geography preparation for the UPSC Civil service exam.

Optimum Population Theory

• The optimum population is the population size that produces the most income per head.
• Any increase or decrease in population size above or below the optimal level reduces revenue per head.
• Given a country's natural resource pool, production technique, and capital stock, there is a certain population size that corresponds to the highest per capita income.
• Other things being equal, any variation from the optimum population size will result in a decrease in per capita income.
• If population growth is accompanied by a rise in per capita income, the country is under-populated and can afford to raise its population until it reaches the optimal level.
• If an increase in population leads to a decrease in per capita income, the country is overpopulated and requires a population decrease until per capita income is maximized.
• At the optimal point, per capita income is the highest; beyond that, the average labor product begins to decline.
• The optimal population is not a fixed point; it fluctuates if any of the components change.
• If manufacturing methods and processes improve, output per person increases and the optimal point shifts upwards.
• The country's optimal point will rise as its natural resource supply grows.
• The optimum population is subject to change in response to quantitative and qualitative changes in the means of production.
• As a result, the optimal point is always changing higher or lower. We cannot establish a country's optimal population on a permanent basis since its productive elements and techniques change with time.

Over-Population

• If the population continues to grow and the optimum is reached, we will reach the over-population stage.
• There will be an overabundance of individuals in the land. The country's resources will not be adequate to provide all citizens with productive work.
• Average productivity will plummet, per capita income will fall, and the standard of life will deteriorate.
• These are the consequences of overpopulation. Food scarcity, sickness and mortality, overstressed resources, an increase in independents, and open and concealed unemployment are the economic consequences of overpopulation.

Under-Population

• A country is considered to be under-populated if its population is less than optimal, i.e. less than what it should be.
• The population is insufficient to fully exploit the country's resources. The resources are great, and much can be produced; yet, men are insufficient.
• The community will not be able to benefit from the economies of scale. In such circumstances, a rise in population will be accompanied by an increase in per capita income.
• When the shortfall is filled, the per capita income reaches its maximum and the optimum is realized.

Optimum Population Theory - Postulations

• A country's natural resources are granted at a certain moment in time, but they vary throughout time.
• Production procedures remain unchanged.
• The capital stock remains constant.
• People's habits and preferences do not change.
• Despite population growth, the working population-to-total population ratio stays stable.
• The working hours of labor remain constant.
• Organizational modes in business are consistent.

Dalton’s Formula

• In the form of a formula, Dalton has inferred overpopulation and underpopulation, which result in divergence from the optimal level of population.
• Maladjustment is the divergence from the ideal (M).
• Maladjustment is determined by two variables: the ideal population level O and the actual population-level A.
• The maladjustment is then M= ((A – O) / O).
• If M is greater than one, the country is overpopulated; if it is less than one, the country is underpopulated.
• When M is zero, the country has the optimal population.

Optimum Population Theory - Examples

• Despite being the third most populous country, the United States is not overpopulated; rather, Saharan nations are overpopulated due to a lack of resource usage.
• Singapore has a high population density, yet it has been able to sustain its population well thanks to efficient resource usage.

Superiority over Malthusian Theory

• The idea is preferable to the Malthusian theory since it applies to all nations regardless of economic situations.
• The hypothesis linked the population problem to the country's entire population, including agricultural and industrial.
• The idea is dynamic in the sense that per capita income may rise over time as output increases owing to advancements in knowledge, skill, capital, and equipment.
• The idea takes an optimistic and realistic approach to the population problem.

Optimum Population Theory - Drawbacks

• Despite its advantages over the Malthusian theory of population, the optimal theory has severe flaws.
• There is no evidence of an optimal level in any country.
• It is difficult to determine the optimal level.
• It is not feasible to calculate the correct per capita income.
• The distribution of per capita income is ignored. The optimal level is not permanent but fluctuates over time.
• It disregards social and institutional circumstances.
• There is no place for it in governmental policies. Does not describe the factors that influence population increase.

Conclusion

By optimal population, we mean the ideal number of people a country should have in relation to its resources. The optimal population size is that which, when combined with available natural resources and a particular level of technology, gives the maximum income per capita in a country. The term "optimal population" refers to the best and most desired size of a country's population. The optimal theory of population is predicated on two key assumptions.

FAQs

Question: What is the Optimum Population Theory?

Question: Who proposed the Optimum Population Theory?

Question: How does the Optimum Population Theory differ from Malthusian Theory?

Question: What happens if a population exceeds the optimum level?

Question: What are the limitations of the Optimum Population Theory?

MCQs

1. Who is credited with formulating the Optimum Population Theory?

a) Thomas Malthus

b) Edwin Cannan

c) David Ricardo

d) Adam Smith

2. According to the Optimum Population Theory, what is the result of a population below the optimum level?

a) Overpopulation

b) Underutilization of resources

c) Maximum economic efficiency

d) Environmental degradation

3. What does the Optimum Population Theory primarily aim to achieve?

a) Social equality

b) Maximum use of natural resources

c) Maximum per capita income

d) Rapid industrialization

4. Which of the following is a potential consequence of exceeding the optimum population level?

a) Increase in per capita income

b) Decrease in resource utilization

c) Diminishing returns on resources

d) Balanced economic growth

5. What is a major limitation of the Optimum Population Theory?

a) It assumes all resources are renewable

b) It fails to account for technological progress

c) It overestimates the impact of migration

d) It provides an exact calculation of optimum population

GS Mains Questions and Model Answers

Q1: “The Optimum Population Theory provides an ideal balance between population size and resource utilization.” Discuss in the context of contemporary economic challenges.

Answer: The Optimum Population Theory suggests that there is an ideal population size for a region or country where resources are used efficiently to maximize per capita income and living standards. In the context of contemporary economic challenges, this theory is highly relevant. Overpopulation in many developing countries has led to resource depletion, unemployment, and environmental degradation, while underpopulation in some developed nations has resulted in labor shortages and economic stagnation. By achieving an optimum balance between population size and resources, countries can address these issues and promote sustainable development. Technological advancements and policies that encourage efficient resource use and population control are essential to achieving this balance.

Q2: Examine the relevance of the Optimum Population Theory in the context of sustainable development.

Answer: The Optimum Population Theory is highly relevant to sustainable development as it advocates for a balance between population size and the resources available in a given region. Sustainable development seeks to meet the needs of the present without compromising the ability of future generations to meet their own needs. Overpopulation leads to the overuse of resources, environmental degradation, and economic instability, which are antithetical to sustainability. By ensuring that population growth is aligned with resource availability and technological advancements, the Optimum Population Theory provides a framework for achieving long-term economic and environmental sustainability.

Q3: How can developing countries use the Optimum Population Theory to guide their economic planning?

Answer: Developing countries can use the Optimum Population Theory to guide their economic planning by assessing their resource availability and determining the population size that can be supported efficiently. By focusing on achieving an optimum population, they can ensure that resources like land, water, and energy are used in a sustainable manner to maximize economic output. Policies such as improving education, family planning, and investing in technology can help these countries manage population growth and resource use, leading to higher per capita income and improved living standards.

Previous Year Questions on Optimum Population Theory

1. UPSC CSE 2018

Q1: Discuss the relevance of the Optimum Population Theory in the context of modern economic development.

Answer:The Optimum Population Theory remains relevant in modern economic development, as it highlights the importance of balancing population size with resource availability to maximize per capita income. In developing countries, rapid population growth can strain resources and infrastructure, leading to diminished returns. On the other hand, developed countries with aging populations may face underutilization of resources. However, advancements in technology, global trade, and migration patterns complicate the simple application of the theory in the modern context.

2. UPSC CSE 2019

Q2: Compare and contrast the Optimum Population Theory with the Malthusian Theory of population growth.

Answer: The Malthusian Theory emphasizes the negative impact of overpopulation, predicting that population growth will outstrip food production, leading to famine and poverty. In contrast, the Optimum Population Theory focuses on finding a balance between population size and resource use to achieve maximum per capita income. While Malthusian theory is pessimistic about population growth, the Optimum Population Theory suggests that there is an ideal population level for economic prosperity. Both theories, however, do not fully account for technological progress or policy interventions in addressing population issues.