Introduction to Economics and Microeconomic Theory

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Introduction to Economics and Microeconomics

Learning Objectives
After reading this chapter, you are expected to learn about:
  • Understand the meaning and scope of the subject Economics
  • Understand the meaning of and the disctinction between the terms Microeconomics and Macroeconomics
  • Understand the subject matter of Microeconomics
  • Understand the importance and significance of Microeconomics
  • Understand the limitations of Microeconomics

Understanding Economic Theory

What is Economics?

In your daily life you must have experienced that as a human being you hold many desires and requirements but the means to satisy them are limited. For example, let us assume that you are a student of an undergraduate programme and as you are still studying, you don't have any regular source of income except for the monthly pocket money of Rs. 750 which your parents are giving to you every month. This pocket money is the only monetary source for you to take care of your monthly expenses. Thus, we can say that you have limited monetary resource of Rs. 750 per month to satisfy your various desires and requirements. Let us further assume that your various desires and requirements are follows:

In nutshell, your desires and requirements are many and your means are limited (Rs. 750 that you get every month as pocket money). In such a case, you will have to prioritize your desires and requirements on the basis of their importance and the gains associated with them. In other words, you will be able to satisfy only some of your desires and requirements and not all as you have limited means or resources. Thus in above example you might be position to satisfy only following few desires and requirements:

This action of yours through which you allocated your limited resource (pocket money of Rs. 750 per month) in order to satisfy your various desires and requirements while ensuring maximization of your gain or return is the crux of the subject Economics.

Economics is thus a social science which studies human behaviour when an individual is encountered with unlimited desires but holds limited means to satisfy them. Economics studies that how individuals (i.e; an Individual human being or an individual firm or an Industry etc) optimise their resources to maximize their gains.

To quote words of famous economists, following are few well accepted definitions of 'Economics':

"Economics is the study of people in the ordinary business of life"

"Economics is the science which studies human behaviour as a relationship between given ends and scarce means which have alternative uses"

"Economics is the study of how socities use scarce resources to produce valuable commodities and distribute them among different people"

Economics is thus a social science which studies following:

  1. How an individual uses his limited resources to maximise his well being
  2. How companies use their limited resources to maximise their business gains and profit
  3. How an Industry uses the limited resources in order to maximize gains of the firms which are part of the Industry as well as the Industry as a whole
  4. How society at large uses the limited resources at its disposal in order to produce required goods or commodities and distribute them among various individuals in society.

Various aspects of economic theory study and analyze thefollowing: Production and factors of production (Land , Labor, Capital and Organization), Cost, Factors impacting Demand and Supply, Demand and Supply analysis, Pricing under various market situations, Factor Pricing, Welfare analysis, Consumption, Money, National Income, Investment, Distribution, Problem of economic growth and development etc. }}

Micro and Macro Economics

Microeconomics and Macroeconomics

As the terms imply, Microeconomics focuses on micro or small segment of economy and it studies the decision making process and econtomic problems of individuals ( household, firm, industry etc) in an economy with respect to that how they use scarce means or resources at their disposal for satisfying their unlimted ends. On the other hand Macroeconomics looks at a larger picture and is study of economy as a whole.

In order to understand the concepts (Microeconomics and Macroeconomics) better, we can say that Microeconomics is the study of an individual human being, an individual household, an individual firm or an individual industry etc with respect to how they use/divide their given scarce means among the possible alternative uses/ends in order to maximize their gain or well being. Microeconomic theory does not study the economy as a whole and instead studies the individuals and their gain maximizing behaviour in any economy. Microeconomics studies and analyzes individual (human being, household, firm, industry etc) behaviour with respect to issues like production, consumption, distribution, price determination etc.

Macroeconomics on the other hand, studies the aggregate or overall economic behaviour of households, firms, industries etc in any economy.It focuses on broader economic issues like business cycles, inlation, deflation, stagflation, issues related to economic growth and development,national income, employment, money and monetary policy, fiscal policy etc.

Understanding the difference between Micro and Macro Economics

Case Study

Understanding differance between Micro and Macroeconomics

Case 1

Let us assume that your mother is managing various household expenses and requirements with the limited monetary resource she holds. Let us further assume that this limited resource is the income of your father earned on monthly basis. Your mother, thus every month, undertakes budgeting or allocation of resource exercise in order meet various household requirement with the limited means that she holds in such a way, that such allocation of resources leads to maximisation of benefits or gains for the individual household. This is crux of the subject Microeconomics.

Let us further assume that in the country where you are residing, the problem of Inflation (Inflation is an economic problem in which an economy experiences continous and persistent rise in prices of goods and services being sold in the economy) emerges and this disturbs the monthly household budget of your mother. Your mother cannot control or manage the problem of inflation as inflation is a macroeconomic issue. Thus, in order to deal the impact of inflation on her household budget, your mother will have to reallocate her limited monetary resource among various goods and services which she is currently buying. This reallocation of resource exercise will most likely result in substitution of expensive goods and services with the cheaper alternative options available in the market. Your mother will be forced to do so because any increase in prices of goods and services in any economy shrinks the real income of the individuals in the economy. This is on account of the fall in the value of money and thus real income due to continous and persistent rise in prices

In this case the resource allcation exercise which your mother undertakes is subject matter microeconomic theory while the problem of Inflation is part of study of Macroeconomic theory.

Case 2

Most of the clients or customers of Infosys Technologies(a very successful Indian Information Technology firm) are located in the overseas markets like USA, Europe, Latin America etc. Infosys provides its clients with on-sight as well as off-sight IT service and support. Infosys Technologies, over the last few years, has been successful in managing its resources (primarily talented human resource) in such a way so as to maximize the return/profit of the company. The management of resources at the Infosys Technologies among various requirements/enf for the profit maximization is focus of microeconomic theory.

As already discussed, most of the clients of Infosys Technologies are located overseas and thus the earnings of the company are in terms of foreign currencies like US Dollars (USD), Euros etc. The excahnge rate movement of US Dollar (USD), Euro etc and the factors impacting the exchange rate of USD, Euro etc in the Indian market is a macroeconomic issue and is dependent on the macroeconomic factors like Inflation, GDP growth rate, Balance of Payments etc. It is thus beyond the capability of Infosys to control or manage such macroeconomic variables. However, any change in the value of USD or Euro vis-a vis Indian rupee impacts the earnings of Infosys. In order to manage the risk and uncertainity associted with the earnings flow, the Infosys Technologies can use hedging techniques.

In this case the issue of allocation and management of resources at the disposal of Infosys for maxisimising the gains or profit for the company is a Microeconomic issue while the issue of fluctation in the value of USD, Euro etc is an outcome of changes in the macroeconomic variables like inflation, balance of payment, GDP growth rate etc and is thus a macroeconomic issue which is beyond the control of the company.

Scope of Microeconomics

Microeconomic theory deals with four important issues at an individual level. ==These issues are:==

The scope and subject matter of Microeconomics covers following three aspects:

The theory of 'Firm and Product Pricing' analyses and discusses following topics:

In brief, the theory of Firm and Product pricing discusses demand and supply environment encountered by individual firms, industries etc. It discusses how given resources can be allocated for production in order to ensure maximization of profit or minimization of cost for a firm. It also discusses various market situations possible and determination of product pricing under various market situations.

The theory of 'Factor Pricing' analyses and discusses following:

In brief, the Factor pricing theory discusses how the reward or return for the various factors of production (Land, Labor, Capital and Organization) can be decided when they are contributing to the production activities.

The 'Welfare theory' discusses the following:

In brief, the Welfare theory discusses and understand the criteria of 'Social Welfare' for any economy and how the same can be achieved in the economy. It also discusses the determination of welfare maximizing output-mix, commodity distribution and resource allocation.

Ceteris Paribus

Ceteris Paribus

It is a latin phrase which means 'Other things remain constant'. The assumption of 'Ceteris Paribus' is integral part of microeconomics theory. By using the assumption of 'Ceteris Paribus', it becomes easy to understand the relationship between two variables or in other words the impact of change in one variable on the other variable while other variables remain constant.

For example while explaining the Law of Demand, which states that There is an inverse relationship between the price and the demand of a good or service. Thus, whenever the price increases the demand for the good decreases and whenever the price decreases the demand for the good increases - provided other things remain constant or Ceteris Paribus. Here, the assumption of 'Ceteris Paribus' helps us in understanding the relationship existing between only price and the demand of good under consideration. By assuming that 'other things remain constant', it becomes easy to eliminate the impact of other factors on demand of a good or service. Here, it becomes important for us to understand that various determinants of demand are - Price of the good, price of related goods, income of an individual, advertisement, fashion, fad etc. In case,we assume that all other determinants of demand except the price of the good in question remain constant then it is possible for us to undersatnd the impact of change in only the price of a product on the demand of the product.

As already stated above, the assumption of 'Ceteris Paribus' is an integral part of economic theory and helps in exploring relation ship between following: Demand and Price, Demand and Income, Demand and price of related goods, Supply and Price, relationship between variable factors of production and the output in the short run, Impact of change in variable factors of the cost of production of a firm in the short run etc.

Importance and Significance of Microeconomics

The study of Microeconomic theory helps in following:

Case Study

Understanding Government Tax Policy

Have you ever wondered why the tax imposed by government on Goods like Cigrattes, Liqour etc is very high? This is so because the Government understands that consumer demand for such products is inelastic and high tax rate on such goods will result in higher tax collection for the Government and thus Government comes out with the policy of high taxes on such commodities.

Similarly, if the Government of a country wishes to discourage consumption of certain Goods then it can impose very high taxes on such category of Goods. For example Government tax is very high on Imported Cars and Other Luxary Products in India.

In the same manner, if Government of a country wishes to encourage consumption of certain category of goods or may be investment in production of certain category of Goods then it reduces the related taxes for encouraging Production/Consumption of such Goods.

Limitations of Microeconomics

The study of Microeconomics gives us useful insight into operational aspects of an economy at the micro or individual level. As discussed above, the study of Microeconomic theory can help us in deciding upon the best resource allocation process for the maximisation of social welfare. The study of Microeconomic theory also helps in demand forecasting, deciding the economic policies of the government, price determination under various market situations etc. However there are certain shortcomings of the Microeconomic theory as well. We need to understand these limitation in order to complete our understanding of the Microeconomic theory.

The limitations of Microeconomics are as follows:


  1. How an individual uses his limited resources to maximise his well being
  2. How companies use their limited resources to maximise their business gains and profit
  3. How an Industry uses the limited resources in order to maximize gains of the firms which are part of the Industry as well as the Industry as a whole
  4. How society at large uses the limited resources at its disposal in order to produce required goods or commodities and distribute them among various individuals in society.
  1. Theory of Firm and Product Pricing
  2. Theory of Factor Pricing (As per economic theory there are four factors of Production – Land, Labour, Capital and Organization)
  3. Welfare Economics

Self-Assessment Questions (SAQs) {{{n}}}
Self Assessment Questions on Introduction to Microeconomics

Points added for a correct answer:  
Points for a wrong answer:
Ignore the questions' coefficients:

1. Economics is

the study of how socities use scarce resources to produce valuable commodities and distribute them among different people
How ordinary human beings earn their living
How factors of production earn their returns

2. Macroeconomics

analyses and discusses issues impacting economy as a whole
is study of how individual firms, industries, households etc maximize their well being
is study of components like production, consumption, product pricing, demand and supply at an individual level

3. Microeconomics is

Study economic variables impacting economy as a whole
Study of economic behavior of an individual firm, industry, household, consumers etc in an economy
fall in the valuation of a firm in the market

4. The Study of Microeconomics assists in

Demand Forecasting
Price Determination
Framing the government Policies
Understanding Consumer Behaviour
All of the above

Your score is 0 / 0

True or False Quiz

  • Microeconomics and Macroeconomics
    • are two differnt aspects of economic theory.
      • True
    • are two different terms used in the economic theory which however are same in terms of their meaning and reference.
      • False
  • The subject matter of Microeconomics includes following:
    • The heory of Firm and Product Pricing, Theory of Factor Pricing and Welfare Economics
      • True
    • The theory of Inflation, Business cycles, National Income and Employment etc
      • False
  • The subject matter of Theory and Firm and Product Pricing is
    • Study of how reward for the factors of production - Land, Labor, Capital and Organization is determined
      • False
    • Study of theory of Demand, Supply, Production, Cost,Markets etc
      • True
  • The subject matter of Welfare theory covers following issues:
    • how can we ensure welfare of aged and children in any society and how welfare of companies operating in any economy can be achieved
      • False
    • how can we determie the welfare maximizing output-mix, commodity distribution and resource allocation for maximising welfare of any society.
      • True
  • Following are the limitations of Microeconomics
    • Wrong assumption of full employment in any economic system, unrealistic assumption of Lassiez Faire economy, assumption of Static equilibrium etc
      • True
    • Wrong assumption of two factor production model, assumption that demand creates its own supply etc
      • False

Try to observe how your mother or father are utilizing their monthly income in order to meet the daily reqirements of the family. Discuss with them that how changes in economic variables like inflation, slowdown of economic activity, appreciation or depreciation of domestic currency (for example Rupee) is impacting their household budgeting decision. Try to analyze and record what in your view is aspect of Microeconomic theory and what is the aspect of macroeconomic theory

Key Terms

References and Bibliography

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