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In economics, the long-run is a theoretical concept in which all markets are in equilibrium, and all prices and quantities have fully adjusted and are in equilibrium.The long-run contrasts with the short-run, in which there are some constraints and markets are not fully in equilibrium.
The DAD–SAS model is a macroeconomic model based on the ... (Dynamic aggregate demand) curve is in the long run a horizontal line called the EAD (Equilibrium ...
The equilibrium level of national income in the IS–LM diagram is referred to as aggregate demand. Keynesians argue spending may actually "crowd in" (encourage) private fixed investment via the accelerator effect, which helps long-term growth. Further, if government deficits are spent on productive public investment (e.g., infrastructure or ...
The AD–AS or aggregate demand–aggregate supply model (also known as the aggregate supply–aggregate demand or AS–AD model) is a widely used macroeconomic model that explains short-run and long-run economic changes through the relationship of aggregate demand (AD) and aggregate supply (AS) in a diagram.
These factors move slowly, so that it is a reasonable approximation to take them as given in a medium-term time scale, though labour market policies and competition policy are instruments that may influence the economy's structures and hence also the medium-run equilibrium; the long run (e.g. a couple of decades or more): On this time scale ...
The applicability of Say's law in theoretical long-run conditions is one motivation behind the study of general equilibrium theory in economics, which studies economies in the context where Say's law holds true.
A standard Solow model predicts that in the long run, economies converge to their balanced growth equilibrium and that permanent growth of per capita income is achievable only through technological progress. Both shifts in saving and in population growth cause only level effects in the long-run (i.e. in the absolute value of real income per ...
However, many see the concept of flexible prices as useful in the long-run analysis since prices are not stuck forever: market-clearing models describe the equilibrium economy gravitates towards. Therefore, many macro-economists feel that price flexibility is a reasonable assumption for studying long-run issues, such as growth in real GDP ...