Figure 8.12: Positive Feedback, Instability, and the Start of a Price Bubble
Figure 8.12 illustrates how positive feedback can amplify an initial price shock, leading to market instability. This process is characteristic of the beginning of an asset bubble, such as a runaway increase in house prices. The figure shows that both a price rise and a price fall can trigger self-reinforcing feedback loops that push the price further from its equilibrium (). This dynamic corresponds to an unstable equilibrium, represented graphically by a Price Dynamics Curve (PDC) that is steeper than the 45-degree line. Such a positive feedback process continues until a change in market expectations breaks the cycle.
0
1
Tags
Economics
Economy
Introduction to Macroeconomics Course
Ch.8 Economic dynamics: Financial and environmental crises - The Economy 2.0 Macroeconomics @ CORE Econ
The Economy 2.0 Macroeconomics @ CORE Econ
CORE Econ
Social Science
Empirical Science
Science
Related
Non-Self-Correcting Disequilibrium in the Housing Market
Asset Price Bubble
Mechanism of Price Amplification via Positive Feedback
Unstable Equilibrium and Positive Feedback in Price Dynamics
Figure 8.12: Positive Feedback, Instability, and the Start of a Price Bubble
Imagine the market for a specific type of rare, tradable art. Initially, the market is stable. A prominent collector unexpectedly purchases a piece at a price 20% above the recent average. If other market participants interpret this event as a signal that prices will continue to rise, what is the most likely immediate effect on the market?
Following an initial, unexpected price increase for a speculative asset, a destabilizing, self-reinforcing cycle begins. Arrange the following stages of this cycle in the correct chronological order.
Analyzing Market Dynamics in 'TechTown'
Evaluating Price Signals in Asset Markets
Consider an asset market where recent price movements have been consistently amplified in the same direction. In this context, an unexpected, sharp decrease in the asset's price would likely be interpreted by market participants as a 'buy low' opportunity, leading to a rapid price recovery.
Contrasting Market Responses to Price Signals
Match each market scenario with the price dynamic it best illustrates.
In an asset market experiencing a positive feedback loop, an initial price increase leads to expectations of further gains. This encourages more buying, which in turn pushes the price even higher. This self-reinforcing cycle drives the market price progressively ______ from its fundamental value.
An analyst is studying three different asset markets. Which of the following scenarios best illustrates a destabilizing, self-reinforcing cycle where price signals amplify market movements away from a stable state?
Contrasting Market Reactions to Price Increases
Figure 8.12: Positive Feedback, Instability, and the Start of a Price Bubble
Analyzing Market Stability
Consider a market where the price in the next period is determined by the price in the current period. The relationship is such that for every $1 increase in the current price above its equilibrium level, the price in the next period increases by $1.20. If the price is currently 5% above its equilibrium level, what is the most likely outcome for the price in the subsequent periods, assuming no other market changes?
Consider a market where the price is at an unstable equilibrium. If a minor, temporary supply surplus causes the price to fall slightly below this equilibrium point, the market's internal dynamics will cause the price to self-correct and return to the original equilibrium level.
The Mechanics of Price Instability
Match each description of a market's price adjustment process with its corresponding characteristic or outcome.
The Dynamics of Market Instability
In a market characterized by an unstable equilibrium, a positive feedback mechanism ensures that any initial price deviation from the equilibrium level will cause a subsequent price change that is ______ in magnitude than the initial deviation.
A market for a specific asset is at an unstable equilibrium. A sudden, small increase in demand causes the price to rise slightly. Arrange the following events in the logical sequence that describes the resulting positive feedback loop.
Imagine a market where the price in one period determines the price in the next. This relationship is plotted on a graph with the current period's price on the horizontal axis and the next period's price on the vertical axis. A 45-degree line on this graph represents a constant price. In this specific market, the curve showing the price relationship is steeper than the 45-degree line. If a small, temporary event causes the price to move slightly away from the point where the curve and the 45-degree line intersect, what is the most likely outcome?
Evaluating a Policy Intervention in an Unstable Market
The US Housing Bubble and Collapse (c. 2000-2006)
House Price-to-Income Ratio
Model of Asset Price Dynamics
Sustenance of Price Bubbles by Expectations
Figure 8.12: Positive Feedback, Instability, and the Start of a Price Bubble
Imagine a new type of collectible asset is introduced. Initially, its price rises moderately. This initial increase attracts media attention, leading to a widespread belief that prices will continue to climb sharply. As a result, a large number of new buyers enter the market, motivated primarily by the expectation of rapid financial gains. This surge in demand causes the asset's price to skyrocket, far beyond what its utility or scarcity would normally justify. Which statement best analyzes the core mechanism driving this price escalation?
Evaluating a Potential Market Bubble
A speculative market for a new asset goes through a full cycle of rapid price increase followed by a sudden collapse. Arrange the following events to correctly represent the typical lifecycle of this phenomenon.
Distinguishing Market Fundamentals from Speculative Bubbles
A period of rapid and sustained price increase for an asset is sufficient evidence to conclude that an asset price bubble is occurring, even if the asset's underlying fundamental value is also increasing at a similar rate.
The Mechanism of a Market Crash
Match each term related to speculative asset markets with its correct description.
An asset price bubble occurs when the market price of an asset significantly and persistently exceeds its estimated ________, driven by a self-reinforcing cycle of expectations about future price increases rather than by improvements in the asset's underlying economic productivity or utility.
Consider two scenarios where the price of a company's stock is rising rapidly.
- Scenario 1: The price increase is driven by the company's announcement of a revolutionary new technology that is expected to double its future profits. Financial analysts have revised their long-term valuation of the company upwards to match the new stock price.
- Scenario 2: The price increase is fueled by intense social media discussion and news reports of early investors making large, quick profits. Many new buyers are purchasing the stock, stating their belief that the price will continue its rapid ascent, allowing them to sell for a gain in the near future, despite the company's underlying profits remaining unchanged.
Based on these descriptions, which statement correctly analyzes the situations?
Analyzing a Market Crash