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Nagata Lab
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A lab that explores, using corporate data, how management decisions are evaluated in the market.

AboutAbout the lab
Tackling the puzzles of capital markets with corporate data.
The Nagata Lab conducts empirical research in corporate finance and accounting, focusing on problems arising in the real economy and society.
It focuses on how management decisions, such as CSR (corporate social responsibility) and corporate governance, affect capital markets and firm value.
Recent master's thesis topics include earnings management, outside directors and firm performance, and institutional investors and ESG.
In the lab seminar, to deepen understanding of real-world issues that do not necessarily have a single right answer, students also work in teams, for example by discussing corporate governance topics.
Key terms
- Empirical research
- Research that collects and analyzes real data to test whether ideas and hypotheses are correct
- Corporate governance
- A system for overseeing and disciplining management so that a company is run properly for its shareholders and others
- Earnings management
- Managers intentionally shifting the profits reported in financial results, within the limits of accounting rules
ResearchResearch themes
The Nagata Lab studies, in accounting and corporate finance, how management decisions, including CSR and corporate governance, affect capital markets and firm value. Recent master's theses and specified-topic research projects cover earnings management, board independence, institutional investors and ESG, and the effects of CSR.
*Illustrative imageDo outside directors change companies?
The number of outside directors is increasing at Japanese companies. Using corporate data, the lab examines how board independence and the breadth of outside directors' experience affect company performance and efforts toward social responsibility.
*Illustrative imageReading how profits are presented
Managers sometimes adjust the figures in their financial results to make profits look better. The lab analyzes how managers' career backgrounds, the COVID-19 pandemic, and the introduction of investor stewardship codes affect this "earnings management," as well as the relationship between the quality of narrative disclosure and stock prices.
*Illustrative imageDoes CSR protect companies?
Can CSR activities that take society and the environment into account act as insurance that protects a company in times of crisis? The lab examines stock price movements during the COVID-19 pandemic and the Russia–Ukraine crisis, as well as the effects of small and medium-sized enterprises' contributions to their local communities.
MembersFaculty
The Nagata Lab consists of faculty members and doctoral and master's students.
- ProfessorKyoko NagataPublications ↗
- Assistant ProfessorMariko Yasu
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Elegant boardroom (Unsplash)” Benjamin Child / CC0 (cropped)
- Do outside directors change companies?: “WCUGU Board of Directors' meeting 2025 01” UgandaWiki / CC BY-SA 4.0 (cropped)
- Reading how profits are presented: “Wachovia National Bank 1906 statement” Wachovia National Bank, Winston, NC / Public domain (cropped)
- Does CSR protect companies?: “Employee Volunteer CSR PotholeRaja” Bprathap79 / CC BY-SA 4.0 (cropped)
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