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Get PDF* Revised: [10-29, 2010]本稿は,リーマン破綻の前後各2 カ月における,中国(中国本土・香港),日本,米国株式市場の日中ボラティリティについて,各株式市場の時系列に沿った縦断的考察と,国際的株式市場との比較を通じた横断的考察の両面から分析を行ったものである。具体的には,2008 年7 月15 日から11 月28 日のサンプル期間を,リーマン破綻前後で分割し,日中ボラティリティに何らかの変化が生じたか,その変化は各株式市場で異なるか否かを検証した。実証結果から,以下の点が明らかになった。リーマン破綻発生後,すべての市場において日中ボラティリティは急激に高まったものの,中国株式市場への影響は限定的で,市場リスクは,米国,日本といった先進市場を下回っていた。また,リーマン破綻以降,日中ボラティリティの長期記憶性が強まっており,株価下落ショックがボラティリティに与える影響が弱まっていることが示された
＜書評＞조이제 / 카터 에커트 편 『한국 근대화 , 기적의 과정』［日本語版］趙利済／渡辺利夫／カーター・J・エッカート編 『朴正煕の時代韓国の近代化と経済発展』 / ベルナール・レミィ著 大清水裕訳 ディオクレティアヌスと四帝統治 / デニス・フリン著 秋田茂、西村雄志編 グローバル化と銀 / 川北 稔 私と西洋史研究 : 歴史家の役割
Get PDF조이제 / 카터 에커트 편 『한국 근대화 , 기적의 과정』 서울 : 월간 조선사 , 2005 년 2 월 , A5 판 , 583 쪽 ,28000 원 , ISBN:8991491049 / ［日本語版］趙利済／渡辺利夫／カーター・J・エッカート編 『朴正煕の時代韓国の近代化と経済発展』 東京大学出版会、2009 年11 月刊、A5 判、271 頁、3800 円＋税、ISBN978-4-13-026137-1ベルナール・レミィ著 大清水裕訳 ディオクレティアヌスと四帝統治 白水社文庫クセジュ、2010 年7 月刊、155+vii 頁、1050 円＋税、ISBN978-4-560-50948-7デニス・フリン著 秋田茂、西村雄志編 グローバル化と銀 山川出版社、2010 年5 月刊、163 頁、B6 判、1500 円＋税、ISBN978-4-634-47507-6川北 稔 私と西洋史研究 : 歴史家の役割 創元社、2010 年4 月刊、272 頁、四六判、2500 円＋税、ISBN978-4-422-20288-
Economic and Behavioral Factors in an Individual's Decision to Take the Influenza Vaccination in Japan
Get PDF* Revised: Economic and Behavioral Factors in an Individual's Decision to Get an Influenza Vaccination in Japan [10-23, 2010]In this paper, we investigate what people in Japan consider when deciding to take the influenzavaccination. We develop an economic model to explain the mechanism by which people decide totake the influenza vaccination. Using our model and the data obtained from a large-scale surveywe conducted in Japan, we demonstrated that people make rational decisions about vaccinationsafter considering its cost and benefits. People consider the probability of infection, severity of thedisease, and the vaccination's effectiveness and side effects. The time discount rate is anotherconsideration because the timing of costs and benefits of the vaccination differ. Risk aversion(fearing the contraction of the flu and vaccination's side effects) also affects the decision. Peoplealso deviate from rationality—altruism and status quo bias play important roles in thedecision-making. Overconfidence indirectly affects the decision via perception variables such asthe subjective probability of infection and assessment of influenza's severity. The decision alsodepends on attributes such as gender, age, and marital status. If the general perception of flu andvaccination is inaccurate, supplying accurate information regarding those may increase ordecrease the vaccination rate, depending on whether this perception is, respectively, higher orlower than the objective rates. Thus, we examine whether the general perception is biased. Oursurvey suggests that disseminating information on the vaccination's effectiveness may increase therate of vaccination, whereas that on the probability of infection may have the opposite effect
Can the health insurance reforms stop an increase in medical expenditures for middle- and old-aged persons in Japan?
Get PDF* Revised: Can the Health Insurance Reforms stop an increase in medical costs of middle- and old-aged persons in Japan? [10-13, 2010]Using two-period panel data from the Nippon Life Insurance ResearchInstitute, this paper tests the hypothesis that an increase in the self-pay ratio of medicalexpenditures associated with the Japanese health insurance reforms of April 2003reduced household medical expenditures. We find that the increase in the self-pay ratiohad a positive but insignificant effect on the share of medical expenses in householdexpenditure. However, when we employ the data as repeated cross-sectionalobservations to increase the sample size, the increase in the self-pay ratio has asignificantly positive effect on the share of medical expenditures. This providescorroborating evidence that middle- and old-aged persons were unable to reduce theirdemand for medical services with the increase in the self-pay ratio. An additionalfinding is that medical services are a necessary good, particularly for those aged 61years or older and those with medical expenditures accounting for a relatively highshare of medical expenditures in high household expenditure
