Essential Economic Principles and Market Functions

Fundamental Economic Principles

Defining Economy and its Core Branches

Economy: The study of how societies use scarce resources to produce valuable commodities and distribute them. It is the study of how individuals choose to act under conditions of scarcity and the consequences of those choices for society.

Microeconomics: The study of the behavior of individual institutions, such as markets, firms, and households.

Macroeconomics: The study of economic behavior as a whole, focusing on total product, price levels, and employment, including factors such as the evolution of unemployment and interest rates.

Economic Analysis and Efficiency

Positive Economics: The analysis of facts and behavior within the economy.

Normative Economics: The study of what the economy should be, involving value judgments.

Efficiency: A situation where a company makes good use of scarce resources, occurring when it can produce a greater quantity of goods.

Opportunity Cost: The value of the option lost when choosing an alternative; it represents the value of the goods or services that are given up.

Production Possibility Frontier: A graph that shows the quantities of products an economy can obtain, given specific quantities of factors and existing technology.

Market Dynamics and Price Determination

The Role of Markets and Competition

Market Economy: A form of economic organization in a society where decisions are made by households and firms interacting in markets to exchange goods and services.

Market: A mechanism through which buyers and sellers jointly fix the price and quantity of a particular asset.

Market Price: The value of a good expressed in money, which represents the will of the participating parties.

Market Equilibrium: The condition agreed upon between buyers and sellers, achieved through the price mechanism.

Perfect Competition: A market situation in which no individual business or consumer can influence the market price on their own.

Competitive Market: A market with many buyers and sellers such that individual agents cannot influence the price.

Supply, Demand, and Equilibrium

• Law of Demand: The principle that the quantity demanded of a product increases when the price decreases, and vice versa.
• Law of Supply: The principle that the quantity supplied of a product increases as the price increases, keeping other factors constant.
• Market Equilibrium State: A situation in which the quantity demanded is equal to the quantity offered, reached when an equilibrium price is established.
• Excess Supply: Situations where the quantity supplied exceeds the demand because the price is higher than the equilibrium price.

Elasticity and Economic Indicators

Understanding Elasticity

Price Elasticity of Demand: A measure of the change in the quantity demanded of a good in response to a change in its price.

Income Elasticity of Demand: A measure of the change in the quantity demanded of a good in response to a change in consumer income.

Price Elasticity of Supply: A measure of the change in the quantity of a good in response to a change in its price.

Measuring National Production: GDP

GDP (Gross Domestic Product): The market value of all final goods and services produced within a country during a certain period of time.

Value Added: The value generated by transforming raw materials into a viable product through the use of inputs.

Nominal GDP: The production of final goods and services valued at the prices current at the time of production.

Real GDP: The production of final goods and services valued at constant prices from a base year.

Inflation and Environmental Policy

Inflation: A general rise in the prices within an economy.

Environmental Policies

Environmental policies are generally divided into two groups:

1. Measures of regulation and control: Examples include fishing licenses and air emissions limitations.
2. Economic instruments: Examples include taxes and subsidies.