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Pieter (Jop) WOLTJER

Researcher – Wageningen Economic Research

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Penn World Table

Article: Is Egypt Really More Productive than the United States?

The Data behind the Penn World Table

ABSTRACT: A new feature in recent versions of the Penn World Table (PWT) is data on comparative levels of total factor productivity (TFP) across countries. TFP is defined as the efficiency with which inputs are transformed into outputs, and differences across countries can be due to factors such as better technology or better resource allocation. Yet, surprisingly, in PWT version 10.0, a number of low-income countries have a TFP level well above that of the United States. Continue reading “Article: Is Egypt Really More Productive than the United States?”

Working Paper: Inconsistencies in Comparing Relative Prices Over Time

Patterns and Facts

ABSTRACT: Purchasing power parities (PPPs) aim to measure relative price levels across countries, like inflation aims to measure relative price levels over time. Ideally, the change in PPPs over time should be consistent with relative inflation, Continue reading “Working Paper: Inconsistencies in Comparing Relative Prices Over Time”

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