Publications

The KCG has various series of publications to provide research findings and policy implications to different interested groups, e.g., students, academics, policy makers and the public.

KCG Working Paper No. 32: Estimation of empirical models for margins of exports with unknown non-linear functional forms: A Kernel-Regularized Least Squares (KRLS) approach

29th January 2024
KCG Secretary
Publications
Publications
Author: Joachim Wagner

Empirical models for intensive or extensive margins of trade that relate measures of exports to firm characteristics are usually estimated by variants of (generalized) linear models. Usually, the firm characteristics that explain these export margins enter the empirical model in linear form, some-times augmented by quadratic terms or higher order polynomials, or interaction terms, to take care or test for non-linear relationships.

KCG Working Paper No. 31: Does Immigration Affect Native Wages? A Meta-Analysis

22nd January 2024
KCG Secretary
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Publications
Authors: Clément Nedoncelle, Léa Marchal, Amandine Aubry, and Jérôme Héricourt

The impact of immigration on native workers’ wages has been a topic of long-standing debate. This meta-analysis reviews 42 studies published between 1987 to 2019, offering a comprehensive as-sessment of reduced-form estimates of the wage effect of immigration[...]

KCG Working Paper No. 30: Technological Sophistication Made in China? – New Insights from Germany’s Evaluation of COVID-19 Antigen Rapid Tests

13th November 2023
KCG Secretary
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Publications
Authors: Silas Dreier and Wan-Hsin Liu

By analyzing a unique dataset from Germany’s evaluation of COVID-19 antigen rapid tests, we show that Chinese firms can excel under today’s global competition and produce tests at quality levels higher than China’s income level would suggest[...]

KCG Working Paper No. 29: Exports and firm survival in times of COVID-19 – Evidence from eight European countries

9th November 2023
KCG Secretary
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Publications
Author: Joachim Wagner

This paper uses firm level data from the World Bank Enterprise surveys conducted in 2019 and from the COVID-19 follow-up surveys conducted in 2020 in eight European countries to investigate the link between exporting before the pandemic and firm survival until 2020[...]

KCG Working Paper No. 28: Big Data Analytics and Exports – Evidence for Manufacturing Firms from 27 EU Countries

22nd September 2023
KCG Secretary
Publications
Publications
Author: Joachim Wagner

The use of big data analytics (including data mining and predictive analytics) by firms can be expected to increase productivity and reduce trade costs, which should be positively related to export activities. This paper uses firm level data from the Flash Eurobarometer 486 survey conducted in February – May 2020 to investigate the link between the use of big data analytics and export activities in manufacturing enterprises from the 27 member countries of the European Union[...]

KCG Working Paper No. 26: Special Economic Zones in Ghana: A Case Study of Enclaves in Tema, Dawa and Sekondi

6th June 2023
KCG Secretary
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Publications
Authors: Vera Acheampong, Nana Yaw Agyeman Owusu and Nina Kupzig

Many countries introduced concepts related to Special Economic Zones (SEZs) to promote export-led economic growth. However, the concepts and implementation of SEZs vastly differ, resulting in large differences between and within countries. Therefore, this study seeks to assess the current state of Ghana’s Special Economic Zones while identifying challenges to SEZ enclave development in Ghana[...]

KCG Working Paper No. 25: Special Economic Zones and Household Welfare: New Evidence from Ghana

5th June 2023
KCG Secretary
Publications
Publications
Authors: Charles G. Ackah, Robert D. Osei, Nana Y.A. Owusu and Vera Acheampong

The study evaluates the impact of Special Economic Zones (SEZs) on household welfare (per capita consumption expenditure (PCE) and poverty status) in Ghana using the Ghana Socioeconomic Panel Survey Dataset. SEZs spillover effect on household welfare within a binary treatment condition may lead to finding inadequacy for policy[...]

Africa’s Female Entrepreneurs – Underfunded or Underperforming?

23rd May 2023
KCG Secretary
Authors: Charles Ackah, Holger Görg, Aoife Hanley and Cecília Hornok (Small Business Economics, 2024, 62:1051–1074)

We explore the export performance of Africa’s underperforming female entrepreneurs, using the Ghanaian ISSER-IGC panel, a comprehensive dataset of manufacturing firms for 2011–2015. Uniquely, the data provides information about the severity of key business constraints, across both male and female entrepreneurs[...]