Economic terminologies form the building blocks of the Indian Economy syllabus.
Core Microeconomic and Macroeconomic Terminologies
Scarcity and Choice
- Economic Problem: The fundamental challenge arising from the gap between limited resources and unlimited human wants.
- Opportunity Cost: The cost of the next best alternative foregone when making a choice. For example, if the government invests in defense, the opportunity cost might be the schools that could have been built with the same funds.
- Marginalism: The study of small incremental changes. Decisions are often made by comparing Marginal Benefit and Marginal Cost.
The Nature of Goods
- Public Goods: Non-excludable and non-rivalrous goods (e.g., national defense, street lighting) provided by the state because the market cannot price them efficiently.
- Merit Goods: Goods that the government encourages because they provide benefits to society beyond the individual consumer (e.g., education, vaccination).
- Demerit Goods: Goods whose consumption is discouraged due to negative externalities (e.g., alcohol, tobacco).
- Giffen Goods: A type of inferior good for which demand increases as the price increases, defying the Law of Demand (e.g., staple bread during a famine).
- Veblen Goods: Luxury items where high prices increase demand due to their status symbol or “snob value” (e.g., premium luxury cars).
Production and Growth Indicators
Output and Value Addition
- Gross Value Added (GVA): The measure of the value of goods and services produced in an area, industry, or sector of an economy.
- Formula: GVA = GDP + Subsidies – Taxes.
- Factor Cost: The total cost of all factors of production (land, labor, capital, entrepreneurship) used to produce a commodity.
- Market Price: The price at which a product is actually sold in the market; it includes indirect taxes and excludes subsidies.
Resource Utilization and Capacity
- Production Possibility Frontier (PPF): A curve representing all maximum output possibilities for two goods, given a set of inputs.
- Capital-Output Ratio (COR): The amount of capital required to produce one unit of output. A lower COR indicates higher capital efficiency.
- Incremental Capital-Output Ratio (ICOR): The additional capital required to produce an additional unit of output. It is a key indicator of the efficiency of the Indian economy.
Market Dynamics and Price Mechanisms
Inflation and Price Stability
- Headline Inflation: The raw inflation figure reported through the Consumer Price Index (CPI) that includes volatile food and energy prices.
- Core Inflation: Inflation that excludes the volatile food and energy sectors; it represents the long-term trend in the price level.
- Deflation: A general decline in prices, often caused by a reduction in the supply of money or credit.
- Disinflation: A temporary slowing of the pace of price inflation (e.g., inflation dropping from 6% to 4%).
Elasticity and Demand
- Price Elasticity: The responsiveness of quantity demanded to a change in price.
- Cross Elasticity: The responsiveness of demand for one good to a change in the price of another good (Substitutes vs. Complements).
- Engel’s Law: An observation that as income rises, the proportion of income spent on food falls, even if actual expenditure on food rises.
Income Flow and Structural Terms
Sectors and Flows
- Primary Sector: Activities involving the extraction of natural resources (Agriculture, Mining).
- Secondary Sector: Activities that process raw materials into finished goods (Manufacturing, Construction).
- Tertiary Sector: The service sector (Banking, IT, Tourism).
- Quaternary Sector: Knowledge-based services (R&D, Information Services).
- Quinary Sector: High-level decision-making (CEOs, Government officials).
Income Distribution and Poverty
- Lorenz Curve: A graphical representation of the distribution of income or wealth within a population.
- Gini Coefficient: A statistical measure of distribution derived from the Lorenz Curve. A value of 0 represents perfect equality; 1 represents perfect inequality.
- Disguised Unemployment: A phenomenon where more people are employed than necessary (common in Indian agriculture), meaning marginal productivity of labor is zero.
Comparative Summary Table of Economic Terms
| Term | Domain | Definition/Significance |
| Laissez-faire | Economic System | A policy of minimum governmental interference in the economic affairs of individuals and society. |
| Price Mechanism | Market Economy | The system where price is determined by the interaction of supply and demand. |
| Invisible Hand | Classical Economics | Adam Smith’s concept that individual self-interest leads to social and economic benefits. |
| Ceteris Paribus | General Theory | A Latin phrase meaning “all other things being equal,” used to isolate the effect of one variable. |
| Paradox of Thrift | Macroeconomics | The idea that if everyone saves more during a recession, aggregate demand falls and everyone ends up poorer. |
Fact-Sheet for UPSC Prelims
- Base Year: The starting point for an index (like GDP or CPI) against which subsequent years are compared. Currently, India uses 2011-12 for most major indices.
- Real vs. Nominal GDP: Real GDP is adjusted for inflation (calculated at constant prices), while Nominal GDP is calculated at current market prices.
- GDP Deflator: A measure of the level of prices of all new, domestically produced, final goods and services in an economy.
- Transfer Payments: Payments made by the government to individuals without any corresponding exchange of goods or services (e.g., old-age pensions, scholarship). These are excluded from National Income calculations.
- Consumer Surplus: The difference between what a consumer is willing to pay and what they actually pay.
- Crowding Out Effect: A situation where increased government spending, financed by borrowing, leads to an increase in interest rates and a reduction in private investment.