Purchasing Power Parity, PPP
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
The exchange rate between two currencies should equal the ratio of the price levels of the two countries. That is, "how many Big Macs can one dollar buy in China versus in the United States."
SCAFFOLDING EFFECT
Reduce cognitive load
Strip away the real value obscured by money illusion. When evaluating cross-border salaries or market potential, do not only look at nominal exchange rates. $10,000 in India and $10,000 in the United States have a world of difference in quality of life (purchasing power). Decisions must be based on PPP, not exchange rates.
Anchor fast decisions
Purchasing power parity (PPP) holds that in long-run equilibrium, a basket of homogeneous goods should have the same price across countries when converted at the exchange rate, thereby deriving the real exchange rate and comparable income that eliminate price differences.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- zh.wikipedia.orghttps://zh.wikipedia.org/wiki/%E8%B4%AD%E4%B9%B0%E5%8A%9B%E5%B9%B3%E4%BB%B7verified
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