Use the IS-LM-PC model and assume the economy is experiencing a positive output gap. What would be an optimal response of the central bank?

Question

BlackTom AI · Accepted Answer

We start by restating the scenario: using the IS-LM-PC framework, the economy currently has a positive output gap, meaning actual output exceeds potential output and inflation pressures are likely rising.

First, consider what the IS-LM-PC model implies when faced with a positive output gap. The Phillips curve (PC) links higher output and higher inflation, so the central bank faces inflationary pressures if it keeps policy too expansionary. The prudent response is to tighten monetary policy to cool demand and bring output back toward potential, which typically involves raising the policy interest rate, reducing the money stock, or otherwise restricting credit growth.

Now, evaluate typical policy instruments and their effects: a higher interest rate shifts the LM curve to the left, dampening investment and consumption, lowering aggregate demand, and narrowing the output gap. This also helps curb rising inflation expectations embedded in the PC, stabilizing prices in the medium run.

If the multiple-choice options were to include measures such as easing monetary policy (lowering rates, expanding the money supply), those would be inconsistent with a positive output gap and rising inflation, and would tend to widen the gap further, not reduce it. A recommendation to do nothing (a neutral stance) would also fail to address the overheating economy.

In short, with a positive output gap and inflationary risk, the canonical optimal response in the IS-LM-PC framework is a monetary tightening stance to cool demand and keep inflation from accelerating.

Note: since the provided options are incomplete here (the answer_options field is empty), there is no listed choice to analyze directly. If the intention was to select from a set of possible actions, the correct action would generally be to tighten monetary policy (e.g., raise the policy rate or reduce the money supply). Otherwise, the prompt as given does not present an evaluable option set to judge against this reasoning.

Use the IS-LM-PC model and assume the economy is experiencing a positive output gap. What would be an optimal response of the central bank?单项选择题

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