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Pieter (Jop) WOLTJER

Postdoc Economic History – University of Groningen

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Total Factor Productivity

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”

Working Paper: What is new in PWT 10.0?

ABSTRACT: The release of the Penn World Table version 10.0 is the fifth release since the switch to the ‘Next Generation of the Penn World Table’, see Feenstra, Inklaar and Timmer (2015). PWT 10.0 is a database with information on relative levels of income, output, input and productivity, covering 183 countries between 1950 and 2019. Continue reading “Working Paper: What is new in PWT 10.0?”

Article: The Composition of Capital and Cross-country Productivity Comparisons

ABSTRACT: The role of physical capital is typically found to be limited in accounting for differences in GDP per worker, but this result may be because capital is customarily assumed to be a homogenous unit. This assumption is misleading,  Continue reading “Article: The Composition of Capital and Cross-country Productivity Comparisons”

Article: The Sources of Growth in a Technologically Progressive Economy

The United States, 1899-1941

ABSTRACT: We develop new aggregate TFP growth estimates for the United States between 1899 and 1941, and sectoral estimates at the most disaggregated level so far, 38 industries. We include hard-to-measure services, and a refined measure of sectoral labour quality growth.  Continue reading “Article: The Sources of Growth in a Technologically Progressive Economy”

Working Paper: What is new in PWT 9.1?

ABSTRACT: The release of the Penn World Table version 9.1 is the fourth release since the switch to the ‘Next Generation of the Penn World Table’, see Feenstra, Inklaar and Timmer (2015). PWT 9.1 does contain important new and revised data. Continue reading “Working Paper: What is new in PWT 9.1?”

Working Paper: The Sources of Growth in a Technologically Progressive Economy

The United States, 1899-1941

ABSTRACT: We develop new aggregate and sectoral Total Factor Productivity (TFP) estimates for the United States between 1899 and 1941 through better coverage of sectors and better-measured labor quality, and find TFP-growth was lower than previously thought, Continue reading “Working Paper: The Sources of Growth in a Technologically Progressive Economy”

Column: Onwards and Upwards

American Productivity Growth during the Great Depression

The Great Depression is considered one of the darkest times for the US economy, but some argue that the US economy experienced strong productivity growth over the period. This column reassesses this performance using improved Continue reading “Column: Onwards and Upwards”

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