Yoshihiko Kadoya Calls for PhD Students and Postdoctoral Researchers
Join a World-Leading Research Lab in Digital Finance, Health Economics, and Well-Being
—— Led by Distinguished Professor Yoshihiko Kadoya, Hiroshima University ——
International Recognition: 5 Kadoya Lab members among the SciVal Top 500
In October 2025, five members of the Kadoya Lab were ranked among the world’s Top 150 researchers in Elsevier’s SciVal Topic
“Financial Literacy and Its Impact on Wellbeing.”
Prof. Yoshihiko Kadoya ranked 9th worldwide, followed by Dr. Mostafa S. R. Khan (10th),
and three other members within the Top 150.
This recognition highlights Kadoya Lab’s global leadership in empirical research on digital financial literacy and wellbeing, reinforcing our commitment to advancing world-class, policy-relevant research.
Five Kadoya Lab members ranked among the Top 150 authors in SciVal’s Topic “Financial Literacy and Its Impact on Wellbeing.”
Source: Elsevier SciVal Database (2025)
Kadoya Lab at Hiroshima University welcomes motivated PhD students and Postdoctoral researchers worldwide.
We specialize in Digital Financial Literacy, Behavioral Finance, and Health & Well-Being, combining large-scale data and advanced econometrics.
Web of Science has selected Yoshihiko Kadoya as a world top-level scientist (THE World University Rankings survey respondent) for 5 years in a row.
According to Elsevier’s SciVal, Prof. Yoshihiko Kadoya is among the world’s top researchers in Financial Literacy and Its Impact on Wellbeing.
Kadoya Lab’s Cutting-Edge Research Projects
Why don’t you join Kadoya Lab’s cutting-edge research projects that fully develop your skills?
These include but are not limited to:
Financial Literacy & Sustainable Health / Household Economics
Selected studies (10)
- Understanding money reduces worry about old age
- For Americans, understanding money eases old age anxiety
- “What makes you anxious about life after 65?” ―Advice to the worlds’ aging population from Japan
- Schools and Media Key to Cutting Financial Literacy (page 37)
- Financial literacy empowers aging population in Japan
- Can financial literacy explain lack of investment in risky assets in Japan?
- Financial Literacy, Financial Education, and Cancer Screening Behavior: Evidence from Japan
- Does Financial Literacy Influence Preventive Health Check-up Behavior in Japan?
- Who became victims of financial frauds during the COVID-19 pandemic in Japan?
- Information sources for investment decisions: Evidence from Japanese investors
Human Services & Long-Term Care
Selected studies (3)
- Book Release of “Human Services and Long-term Care: A Market Model” By Yoshihiko Kadoya
- Cognitive decline reduces household spending among older people
- The Economic Burden of Dementia: Evidence from a Survey of Households of People with Dementia and Their Caregivers
Emotion & Productivity
Selected studies (4)
- Biometric devices help pinpoint factory workers’ emotions and productivity
- Biometric devices help pinpoint factory workers’ emotions & productivity (QS Wow News)
- How is emotion associated with driving speed? A study on taxi drivers in Japan
- Could having access to real-time data on your emotions help improve mental health? Evidence from a Randomized Controlled Trial of Japanese Office Workers
Tactile Marketing
Selected studies (1)
- Consumers’ Willingness to Pay for Tactile Impressions: A Study Using Smartphone Covers
Family Care-Giving, Natural Experiments & Asian Studies
Selected studies (5)
- China’s one-child generation not so selfish after all
- India’s Preference For Sons Mostly Due To Need For Elderly Care: Study
- Access to Antenatal Care in Lao PDR: Analysis Using National Level Survey
- Impact of changing socioeconomic conditions on family caregiving norms: Evidence from Japan
- The Association of Caregivers’ Socio-Economic Conditions with Family Caregiving Norms: Evidence from China
Addiction & Health Behavior
Selected studies (8)
- Financial literacy may reduce gambling frequency: Evidence from Japan
- Financial Literacy and Gambling Behavior in the United States
- Financial Literacy, Financial Education, and Smoking Behavior: Evidence From Japan
- Do Financial Literacy and Financial Education Influence Smoking Behavior in the United States?
- Financial Literacy and Exercise Behavior: Evidence from Japan
- Financial Literacy, Financial Education, and Cancer Screening Behavior: Evidence from Japan
- Financial Literacy and Impulsivity: Evidence from Japan
- Impulsivity and Alcohol-Drinking Behavior: Evidence from Japan
COVID-19 Pandemic
Selected studies (11)
- Willing or Hesitant? A Socioeconomic Study on the Potential Acceptance of COVID-19 Vaccine in Japan
- Who Is Next? A Study on Victims of Financial Fraud in Japan
- COVID-19 Vaccine hesitancy among the younger generation in Japan
- Loneliness during the COVID-19 pandemic: Are older people at higher risk?
- Who became lonely during the COVID-19 pandemic?
- A longitudinal study on loneliness during the COVID-19 pandemic in Japan
- Has Smartphone Use Influenced Loneliness during the COVID-19 Pandemic in Japan?
- Pandemic Fatigue in Japan: Factors Affecting the Declining COVID-19 Preventive Measures
- Loneliness during the COVID-19 pandemic: A comparison of urban and rural areas
- Does the easing of COVID-19 restrictive measures improve loneliness conditions? Evidence from Japan
- How does Smartphone Use Impact Loneliness in the Post-COVID landscape in Japan?
Interview: Yoshihiko Kadoya (Distinguished Professor)
Interview: Yoshihiko Kadoya (Researchers Leading the World)
Interview: Yoshihiko Kadoya (Distinguished Professor, p.13)
Interview: Yoshihiko Kadoya (Distinguished Researcher)
Together with Hiroshima Institute of Health Economics Research (HiHER), we are actively engaged
with international research collaborations.
We also have collaborated with many business and public organizations. See this for instance.
Publication Opportunities
“Publish or Perish.” This is very true in academia, where publications matter. With that in mind, Kadoya Lab would provide you with numerous opportunities for publication.
In fact, Kadoya Lab students have many publications:
Abdul-Salam Sulemana, PhD
Possible Financial Supports
If you wish, Yoshihiko Kadoya can help you to get scholarships including the MEXT Scholarship (Japanese Government Scholarship) and the JDS Scholarship (Japanese Government Scholarship).
As of 2025, all PhD students at Kadoya Lab have received major scholarships, including MEXT, JICA-JDS, JICA-SDGs, and HU’s Excellent Student Scholarship. See Student Achievement for the details.
All of them have published multiple Web-of-Science indexed papers during their PhD period.
For the admission, the applicants must have
- a master’s degree or its equivalent
- proficiency in English
- passion for empirical research
- a good command of stata (not mandatory but preferable)
More info
Admission Page
*Make sure to contact Yoshihiko Kadoya via email prior to making the application
Hiroshima University (HU)
- HU is recognized by the Japanese Government as one of Japan’s Top Global Universities (Type A)
- HU is a research university
- HU is consistently ranked 10th – 15th out of over 700 universities in Japan
- HU is surrounded by many national (research) institutions such as AIST, RIKEN, and JICA
- The tuition of HU is very affordable for research university (annual tuition fee is only 535,800 JPY [approx. 5,000 USD/year]) Click here for the details (see page 7)
- The living expenses of the HU main campus (Higashi-Hiroshima) area are particularly affordable, compared to those of most other cities among the OECD member countries (click here for the details) and the campus life would probably be very convenient for you: if you live in the dormitory or apartments located in the university town like Shitami area, almost all you need for your daily life like shopping mall, electric store, DIY shop, banks, convenience stores, post office, cafes, and restaurants, are within walking distance.
- The HU area is very safe! (Japan is one the world’s safest countries)
- The location of HU main campus (Higashi-Hiroshima) is reasonably accessible everywhere: a) the campus is directly connected to the city of Hiroshima (A-bomb dome area) by highway bus (about 1 hour ride); b) Shinkansen station, the local line of the Japan Railway (JR) local line, Highway, and Hiroshima International Airport are nearby. Click here for the details
- See student life for the details
- See HU update to follow the updates of HU