Ebehi Iyoha - Publications - Faculty & Research

2025
Working Paper

Navigating Choppy Waters: How U.S. Trade Policy Uncertainty Affects Small Businesses

By: David Atkin, Zoë Cullen and Ebehi Iyoha

This paper explores the impact of recent changes in the US trade policy environment on small businesses. Drawing on a survey of more than 4,000 small businesses conducted between March 22 and 31, 2025, we examine firms’ knowledge, expectations, and decisions during... View Details

Keywords: Trade; Risk and Uncertainty; Government Legislation; Globalization; International Relations; Small Business

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February 13, 2025
Article

Research: The Costs of Circumventing Tariffs

By: Jaya Y. Wen, Ebehi Iyoha, Edmund Malesky and Sung-Ju Wu

When tariffs are levied against a specific country, that country might attempt to circumvent the tariff by rerouting products through a third country to avoid the higher taxes. Research in the aftermath of the 2018 U.S.-China trade war examined this phenomenon, finding... View Details

Keywords: Trade; Global Strategy; International Relations; United States; China

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2025
Working Paper

Exports in Disguise? Trade Rerouting During the U.S.-China Trade War

By: Ebehi Iyoha, Edmund Malesky, Jaya Wen and Sung-Ju Wu

This paper introduces a new measure of tariff evasion through rerouting and applies it to the 2018 U.S.–China trade war, focusing on Vietnam as a transit country. We use transaction-level trade data and define rerouting as the flow of a granular eight-digit Harmonized... View Details

Keywords: Trade; International Relations; Logistics; China; Viet Nam; United States

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2023
Working Paper

Estimating Productivity in the Presence of Spillovers: Firm-Level Evidence from the U.S. Production Network

By: Ebehi Iyoha

This paper examines the extent to which productivity gains are transmitted across U.S. firms through buyer-supplier relationships. Many empirical studies measure firm-to-firm spillovers using firm-level productivity estimates derived from control function approaches.... View Details

Keywords: Supply and Industry; Partners and Partnerships; Production

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July 2023 (Revised October 2023)
Teaching Note

Wordle

By: Ebehi Iyoha and Christina Wallace

Teaching Note for HBS Case No. 323-032. View Details

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September 2022 (Revised November 2023)
Case

Wordle

By: Karen G. Mills, Christina Wallace, Ebehi Iyoha, Gabriella Elanbeck and Morgane Herculano

After sourdough bread, countertop chive gardens, and vaccine selfies came a pandemic-era trend that everyone seemed to be in on: one daily chance to guess a five-letter word and crow about your success on social media via little green and yellow squares. From a... View Details