# Purchasing power parity { "id": "S85109168", "title": "Purchasing power parity", "url": "/topics/S85109168", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "91b6cc2810aa7d9a", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "10088133810010064448", "address_version": "morton4x16-v1", "coordinates": [ 0, 20, 19110, 49152 ], "answer_status": "Directory metadata; local answer requires separate source review", "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap" } Here are entered works discussing the theory which states that exchange rates between currencies are in equilibrium when their purchasing power is the same in each of two countries. Directory metadata is not a factual answer or evidence of a global knowledge gap. Source: https://id.loc.gov/authorities/subjects/sh85109168 No owner-reviewed local answer yet.