There is a temporary demand shock Ep = -0.05. In the short run, immediately following this shock, output and inflation are given by: OY=0.975, π = +0.005 Y = 0.975, π = -0.005 OY 1.025, T = +0.005 OY 1.025, π = -0.005
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- Consider an AD-AS model with AD curve Y – Y* = - αγ (π - π*) + εand AS curve π = π + φβ(Y – Y*) + εwith parameter values α = 0.5, γ = 1, φ = 1, β = 0.5,and with inflation target π* = 0.02 and potential output normalised to Y* = 1.Starting from a long-run equilibrium with π = π* suppose there is a temporary demand shock ε = -0.05. Which of the following is TRUE? 1.In the short run, output is 5% below trend 2.In the short run, output is 4% below trend 3.In the short run, inflation is 1% 4.In the long run, output is 5% below trendConsider an AD-AS model with AD curve Y - Y* = −αy(n − ñ*) + € and AS curve π = π² + ¢ß(Y – Y*) + €s with parameter values a = 2, y = 1, p = 1 and ß = 2 and with inflation target * = : 0.01 and potential output normalised to Y* : = 1. e T Starting from a long-run equilibrium with ² = *, suppose there is a temporary supply shock €s = 0.05. Which of the following is FALSE? In the short run, inflation is 1% above target In the short run, output is 2% below potential In the short run, the real interest rate rises O In the short run, the real interest rate fallsConsider the short-term model characterized by the following AS and AD curves: Ý, = à – bm(x, – ñ) (AD] and A; = x; + vỶ, + õ, (AS). The economy is in steady state at time t = -1 (that is, a-1 = ñ, ō-1 = 0, and ā = 0). It is hit by a one-time inflation shock öy = .025 at time i = 0. For now, expectations are adaptive: 7 = ,-1. You'll use the answer to this question in several follow-up questions. To keep track of your results, you should use a spreadsheet application. If you don't already have one, you can use this hyperlinked template e (it's a Google Sheet). Calculate zo assuming b = 0.5, m = 2, ñ = 0.03, and ū = 1. Enter your answer as a percentage and round to the nearest hundredth.
- Consider the ASIAD model. The AS curve is: Y, = a - bm(n, - 7) and the AD curve is: T, = T;-1 + TỸ, +ō. where a is inflation and Y is short-run output. The subscript t indexes time. T = 0.01, 0 = 0.02, ā = 0.04, b = 0.05, and m = 0.04 are fixed strictly positive parameters. Assume the inflation target n is 0.02 (or 2%). Imagine the Bank of England decides to increase its inflation target to 0.04 (or 4%) What happens to short-run output Ỹ in the period immediately after the shock? a. increases O b. decreases Oc. stays the sameA Central Bank is said to have a more hawkish stance when it reacts more aggressively against deviations of inflation from target. Recall that the AD curve is given by: Ýį = ā – bm(T; – ñ), and the AS curve is given by Tt = Tt-1 + ū¥Ýt +ō Knowing this, saying that the Central Bank became more hawkish is equivalent to say: Inflation, AS AD Output, Ỹ O That ā decreased, thus moving down the AD curve. O That b decreased, thus making the AD curve steeper. That ū increased, thus making the AS curve steeper. O That ñ decreased, thus flattening the AD curve. O That the equilibrium inflation moved to below ĩñ. That b decreased, thus making the AD curve flatter. O That ā increased, thus moving up the AD curve. O That ñ increased, thus flattening the AD curve.- Consider an AD-AS model with AD curve Y - Y* = -αy(π − π*) + €D and AS curve π = π² + ¢ß(Y−Y*) + es with parameter values a = 2, y = 1,6 = 1, ß = 2, and with inflation target * = 0.01 and potential output normalised to Y* = 1. Starting from a long-run equilibrium with ² = π*, = π*, suppose there is a temporary supply shock es = 0.05 and a temporary demand shock ED = 0.05. Which of the following is TRUE? In the short run, inflation is 1% above target O In the short run, output is 2% below potential O In the short run, the real interest rate rises O In the short run, the real interest rate falls
- Consider the AS/AD model. The AS curve is: Y, = a – bm(r, - 7) and the AD curve is: Thy = T-1 + DỸ, +ō. where r is inflation and Y is short-run output. The subscript t indexes time. ī = 0.01,0 = 0.02, ā = 0.04, b = 0.05, and m = 0.04 are fixed strictly positive parameters. Assume the inflation target is 0.02 (or 2%). Calculate Y at the steady state. (If you answer is 3%, do not put the percentage sign enter 3 or 0.03).Q1 [Inflation in a monetary OLG model] Consider an overlapping generations model in which individuals live for two periods, young and old. The economy begins in period 1, when there are NO numbers of the initial old. In each period t 2 1, Nt young individuals are born, where Nt = nNt-1 and n>1. There is only one good in this economy. The good cannot be stored from one period to the next. In each period, each young individual is endowed with y units of the consumption good and old individuals have zero endowment. The young generations' preference can be expressed use the following utility function: u(c1,t, c2,t+1) = log(c1,t) + B log(c2,t+1) Members of the initial old generation only live for one period and have utility u(co,1) = logc0,1. In this economy, individuals can use fiat money to facilitate trades between different generations. Assume the stock of fiat money M grows at a constant rate y, i.e., Mt = yMt-1, where y >1. The money created each period is used to finance a lump- sum…Consider the AS/AD model. The AS curve is: Ỹ, = a – bm(r, – T) and the AD curve is: T; = T;-1 + UY, +ō. t where t is inflation and Y is short-run output. The subscript t indexes time. ū = 0.01, ō = 0.02, ā = 0.04, b = 0.05, and m = 0.04 are fixed strictly positive parameters. Assume the inflation target T is 0.02 (or 2%). Calculate T at the steady state. (If you answer is 3%, do not put the percentage sign enter 3 or 0.03).
- Determine the impact of the each of following types of shocks on output and inflation in the short-run and long-run. (Use AS-AD-LRAS curves to illustrate your reasoning). A decline in consumer confidence. An increase in inflation expectations. An increase in export demand.Consider the classical AS-AD model with misperceptions. Assume that the economy is initially at its general equilibrium. Now, suppose the central bank considers an increase in the nominal money supply that is not anticipated by households or firms. a. How does the misperception theory work? b. Which of the three markets is first affected (labor, goods, or asset market)? Explain and show graphically how this market is affected by an unanticipated increase in the nominal money supply. c. Use the classical version of the AS-AD model with misperceptions to explain and to show graphically how an unanticipated increase in the nominal money supply affects the short-run equilibrium. d. Use the classical version of the AS-AD model with misperceptions to explain and to show graphically how an unanticipated increase in the nominal money supply affects the long-run (general) equilibrium.During July 2020, Japan’s u was 2.6%; economists have estimated that Japan’s un is 2.5%. If Japan has an accelerationist PC, what would have happened to Japan’s inflation rate during July? Explain fully by showing where Japan was functioning using the appropriate graph. Make all your assumptions clear; calculations not required.
