What is the name of the phenomenon in which a small change in consumer demand can have an amplified effect throughout the supply chain?

The Bullwhip Effect is a well-documented supply chain phenomenon that describes how small fluctuations in demand at the retail level can cause progressively larger fluctuations in demand at the wholesale, distributor, manufacturer, and raw material supplier levels. The variability of orders increases as one moves upstream in the supply chain, away from the final customer. This amplification occurs due to factors like demand forecast updating, order batching, price fluctuations, and rationing games, leading to inefficiencies such as excess inventory, stockouts, and poor customer service. The name is an analogy to a cracking whip, where a small flick of the wrist can cause a large wave at the end.

A. Pareto Principle: This principle, also known as the 80/20 rule, suggests that for many outcomes, roughly 80% of consequences come from 20% of the causes. It is used for prioritization, not to describe demand amplification.

C. Supply and Demand: This is a fundamental economic model that determines asset prices in a market. It is a broad concept and does not specifically describe the amplification of demand variability up the supply chain.

D. Amplification Concept: While the phenomenon involves amplification, this is not the formally recognized academic or industry term. The correct and specific term for this supply chain dynamic is the Bullwhip Effect.

1. Lee, H. L., Padmanabhan, V., & Whang, S. (1997). The bullwhip effect in supply chains. Sloan Management Review, 38(3), 93-102. In the abstract and introduction (p. 93), the authors define the bullwhip effect as the phenomenon where "orders to the supplier tend to have larger variance than sales to the buyer... and the distortion propagates upstream in an amplified form."

2. Chopra, S., & Meindl, P. (2016). Supply Chain Management: Strategy, Planning, and Operation (6th ed.). Pearson. Chapter 11, "Managing Uncertainty in the Supply Chain: Safety Inventory," explicitly discusses the Bullwhip Effect, stating, "The bullwhip effect is the phenomenon in which fluctuation in orders increases as they move up the supply chain from retailers to wholesalers to manufacturers to suppliers" (p. 329).

3. Forrester, J. W. (1958). Industrial Dynamics: A Major Breakthrough for Decision Makers. Harvard Business Review, 36(4), 37-66. This foundational article first identified the demand amplification phenomenon in supply chains, which was later termed the Bullwhip Effect. Forrester describes how production and inventory fluctuations are amplified at each stage of a supply system (Section: "System Oscillations," pp. 42-44).