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LAW OF COMPARATIVE ADVANTAGE: A basic principle that states every nation has a production activity that incurs a lower opportunity cost than that of another nation, which means that trade between the two nations can be beneficial to both if each specializes in the production of a good with lower relative opportunity cost. While this law is fundamental to the study of international trade, it also applies to other activities, especially the specialization and the division of labor.
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                           LONG-RUN TREND: The pattern of potential real gross domestic product of an economy based on full employment of available resources. The long-run trend is commonly represented as a positively-sloped line in a diagram depicting business-cycle phases. This slope captures the economy's expansion in its production possibilities resulting from increases in the quantity and quality of resources. The long-run trend is a positively-sloped line on a diagram that plots the movement of actual real gross domestic product over time. It is primarily used to identify unemployment and inflation problems generated by the business-cycle instability. If actual real gross domestic product is below the long-run trend, then the economy is not living up to its full employment potential and the economy has in a contraction and unemployment. If actual real gross domestic product is above the long-run trend due to an expansion, then the economy is temporarily overshooting its full employment potential, and inflation is likely to occur. Long Run Growth | 
| The diagram displayed in this exhibit can be used to illustrate the macroeconomy's long-run trend. The red line represents the value of real gross domestic product (real GDP) over a period of several months. Clearly real GDP rises, then falls, then rises, then falls. This is the instability, the ups and downs, that are a fundamental part of business cycles.To reveal the long-run trend of real GDP, or potential real GDP, click the [Long-Run Trend] button. This blue line represents the amount of real GDP that the economy can produce if all resources are fully employed, resulting in potential real GDP. It has a positive slope because the economy's production capabilities increase over time due to increases in the quantity and quality of resources. Historically, this long-run trend represents approximately a 3 percent annual growth of production capabilities and potential real GDP. Clearly actual real GDP does not follow this long-run trend of potential real GDP. During some periods actual real GDP is greater than potential real GDP and in other periods actual real GDP is less than potential real GDP, indicated by the red line lying above or below the blue line. During some periods actual real GDP is growing faster than potential real GDP, in other periods actual real GDP is growing slower than potential real GDP, indicated by the red line having a steeper or flatter slope than the blue line. And in some cases actual real GDP declines even though potential real GDP continues to expand. The fact that actual real GDP does not coincide with the long-run trend of potential real GDP is the essence of business cycles and instability of the macroeconomy.
 Recommended Citation:LONG-RUN TREND, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: July 12, 2025]. Check Out These Related Terms... | | | | | | | | | | Or For A Little Background... | | | | | And For Further Study... | | | | | | | | | | | | | | Related Websites (Will Open in New Window)... | | | |
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WHITE GULLIBON [What's This?]
Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius trying to buy either a wall poster commemorating yesterday or pink cotton balls. Be on the lookout for slightly overweight pizza delivery guys. Your Complete Scope
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Okun's Law posits that the unemployment rate increases by 1% for every 2% gap between real GDP and full-employment real GDP.
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"What gets measured gets done." -- Peter Drucker, educator
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GEB Games and Economic Behavior
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