Yamada, Hiroyuki



Faculty of Economics (Mita)




Papers 【 Display / hide

  • Decomposing Vietnamese gender equality in terms of wage distribution

    Vu T., Yamada H.

    Pacific Economic Review (Pacific Economic Review)  23 ( 5 ) 705 - 731 2018.12

    ISSN  1361374X

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    © 2018 John Wiley & Sons Australia, Ltd We decompose the gender wage gap in terms of wage distribution in Vietnam during 2002–2014 using two methods. The first method uses two estimated counterfactual distributions; the second uses an estimated recentred influence function. We focus on the formal sector and find evidence for a consistent gender wage gap, with the price of skills being the main contributor. In contrast, labour market discrimination does not have a crucial influence. Some gender equality gained by the distribution of skills can be explained by the rise in women's education and women's participation in specific industries, occupations and the growing private sector.

  • Life course consequences of low birth weight: Evidence from Japan

    Matsushima M., Shimizutani S., Yamada H.

    Journal of the Japanese and International Economies (Journal of the Japanese and International Economies)  50   37 - 47 2018.12

    ISSN  08891583

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    © 2018 Elsevier Inc. This study provides the first evidence on a variety of life course outcomes of birth weight in Japan by employing new datasets covering the middle and older generations. We have several interesting observations. First, low birth weight is significantly associated with adverse outcomes in early life including school performance and self-rated health. Second, no negative effect of low birth weight is found on educational attainment or primary job status. Third, health outcomes due to low birth weight at older ages are not negatively affected except for difficulty in mobility and higher risk of diagnosis with hypertension or diabetes. Overall, our findings suggest that the negative effect of lower birth weight seems to fade out over the life course.

  • The Effects of Risk Preferences on the Adoption of Post-Harvest Technology: Evidence from Rural Cambodia

    Shimamoto D., Yamada H., Wakano A.

    Journal of Development Studies (Journal of Development Studies)  54 ( 10 ) 1819 - 1837 2018.10

    ISSN  00220388

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    © 2017, © 2017 Informa UK Limited, trading as Taylor & Francis Group. We investigate how rice farmers’ risk preferences affect the adoption of post-harvest technology in Cambodia, focusing on moisture meters. We find that risk-averse farmers are more likely to adopt moisture meters, although the degree of farmers’ loss aversion or the extent to which they tended to overweight small probabilities do not affect the adoption. In the setting of our study, the effects of farmers’ risk preferences on agricultural technology adoption can be described by using expected utility theory. However, controlling for loss aversion and probability weighting improves the precision of examining the effects of farmers’ risk preferences on adoption.

  • Health Insurance Coverage and Firm Performance: Evidence Using Firm Level Data from Vietnam

    Yamada H., Vu T.

    B.E. Journal of Economic Analysis and Policy (B.E. Journal of Economic Analysis and Policy)  18 ( 4 )  2018

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    © 2018 Walter de Gruyter GmbH, Berlin/Boston. In literature, there is limited direct evidence regarding the effect of health insurance coverage on firm performance and worker productivity. We study the impacts of health insurance on medium-and large-scale domestic private firms' performance and productivity in Vietnam, using a large firm level census dataset. We find statistically, but suggestive, positive health insurance effects on both aggregate profit and profit per worker for both complying and non-complying firms when using the full sample. We further restrict the sample to specific industries. The positive health insurance effects could exist for both complying and non-complying firms in the heavy manufacturing and construction sector, while such positive effects could be only significant for complying firms in the wholesale/retail sectors. We could not find any evidence of positive health insurance effects in the light manufacturing sector. These results imply that the impacts of health insurance could be industry specific.

Papers, etc., Registered in KOARA 【 Display / hide

Research Projects of Competitive Funds, etc. 【 Display / hide

  • Development Econometrics Rooted in Historical and Cultural Factors


    MEXT,JSPS, Grant-in-Aid for Scientific Research, 挑戦的研究(萌芽), Principal investigator

  • 地理空間情報科学をいかに開発経済学に融合出来るか


    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Principal investigator

  • Globalization and its influences on domestic economies: evidences using firm and plant level data in Vietnam and Japan


    MEXT,JSPS, Grant-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (B), Principal investigator

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    Using the officially collected enterprise-level data in Vietnam, I conducted empirical research to capture the dynamic structural changes in economy and society of the country. Where it is possible, I attempted to use a panel data constructed from the original data. Concretely, I studied (1) factors associating with the survival of multinational enterprises (MNE) in Vietnam during 2000-2011 using Cox hazard models, (2) how the origin of foreign investors affects the degree of horizontal and vertical technological spillovers, and (3) the impacts of health insurance coverage on medium and large-scale domestic private firms’ performance and productivity. Regarding the effect of import penetration on domestic employment, which is an important topic for both developing and developed countries, I studied using the plant-level panel data in Japan as well as the Vietnamese data mentioned above.


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