Paper1 Basic economic problem Quantitative elements - - methods to calculate GDP GNP Essay questions 1 open circular flow 2 Features/phases of business cycles

Gross Domestic Product (GDP) can be calculated using three main approaches. The expenditure approach sums up all spending on final goods and services: consumption by households, investment by businesses, government spending, and net exports (exports minus imports). The income approach adds up all income earned by factors of production: wages, rent, interest, and profits. The production approach, also known as the value-added approach, calculates the total value of goods and services produced, subtracting the cost of intermediate goods at each stage of production to avoid double-counting.

Gross National Product (GNP) is calculated by adjusting GDP for net factor income from abroad. This involves adding income earned by domestic residents from foreign sources and subtracting income earned by foreign residents from domestic sources. Essentially, GNP measures the total income earned by a nation's residents, regardless of where the income was earned.

Essay questions

The open circular flow model illustrates the continuous movement of money, goods, and services between households, firms, the government, and the foreign sector. Households provide factors of production to firms and receive income, which they use for consumption, saving, or paying taxes. Firms produce goods and services, pay for factors of production, and undertake investment. The government collects taxes from households and firms and injects money through government spending. The foreign sector introduces exports (injections) and imports (leakages), connecting the domestic economy to the global market.

Business cycles are recurrent, but not periodic, fluctuations in economic activity over a period of time. They are characterized by four main phases: expansion, a period of economic growth with increasing employment and output; a peak, the highest point of economic activity before a downturn; contraction or recession, a period of declining economic activity, employment, and output; and a trough, the lowest point of the recession before recovery begins. These cycles vary in duration and intensity, influenced by factors like investment, interest rates, and consumer confidence.