Individuals can engage in sustainable economic activities both as investors and consumers. To examine their dual roles in promoting sustainability, we analyze preferences for sustainable investment compared to green consumption through a survey of Japanese individuals. We find no substantial difference in non-monetary motivations for sustainable activities, as the proportion of respondents choosing sustainable investments with low returns is comparable to that for green consumption with high price. Furthermore, environmental orientation has a common effect on both sustainable investment and green consumption. Specifically, individuals with high environmental orientation prefer sustainable investments with low returns and also green consumption at high product prices. However, environmental orientation has no significant effect on risky sustainable investments, indicating that strong pro-environmental awareness may not be sufficient to overcome the risks associated with investment activities.
{"title":"Dual effects of individuals’ sustainability orientation on investment and consumption: Evidence from environmental issues in Japan","authors":"Hiroyuki Aman , Norihiro Kasuga , Taizo Motonishi , Chisako Yamane","doi":"10.1016/j.japwor.2025.101332","DOIUrl":"10.1016/j.japwor.2025.101332","url":null,"abstract":"<div><div>Individuals can engage in sustainable economic activities both as investors and consumers. To examine their dual roles in promoting sustainability, we analyze preferences for sustainable investment compared to green consumption through a survey of Japanese individuals. We find no substantial difference in non-monetary motivations for sustainable activities, as the proportion of respondents choosing sustainable investments with low returns is comparable to that for green consumption with high price. Furthermore, environmental orientation has a common effect on both sustainable investment and green consumption. Specifically, individuals with high environmental orientation prefer sustainable investments with low returns and also green consumption at high product prices. However, environmental orientation has no significant effect on risky sustainable investments, indicating that strong pro-environmental awareness may not be sufficient to overcome the risks associated with investment activities.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"76 ","pages":"Article 101332"},"PeriodicalIF":1.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145520228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01Epub Date: 2025-11-19DOI: 10.1016/j.japwor.2025.101333
Akihiro Yoshimura, Reo Takaku
Over the last several decades, many developed countries have increased patient cost-sharing to contain healthcare expenditures. Some influential studies, including the RAND Health Insurance Experiment, suggest that increasing patient cost-sharing reduces unnecessary medical care by mitigating ex-post moral hazard. However, most existing studies in this field focus on short-run effects, in which the health status of the insured and provider behaviors remain unchanged. In this study, we analyze the medium-term impact of the 2003 coinsurance rate increase on inpatient care utilization by using public hospital data in Japan covering a 12-year period. Difference-in-differences and event study analyses robustly showed that the number of inpatients decreased a few years after the 2003 reforms. However, inpatient costs per patient day began to increase after four years, mainly due to increased medical resources. Eventually, despite the initial reduction in the number of inpatients, we found that the effects on total inpatient costs were negligible in the medium run. These findings indicate that many existing studies may overestimate the cost-containment effects of patient cost-sharing in the medium- and long-term.
{"title":"Medium-run effects of patient cost-sharing on the demand-side and supply-side of inpatient care: A natural experiment in Japan","authors":"Akihiro Yoshimura, Reo Takaku","doi":"10.1016/j.japwor.2025.101333","DOIUrl":"10.1016/j.japwor.2025.101333","url":null,"abstract":"<div><div>Over the last several decades, many developed countries have increased patient cost-sharing to contain healthcare expenditures. Some influential studies, including the RAND Health Insurance Experiment, suggest that increasing patient cost-sharing reduces unnecessary medical care by mitigating ex-post moral hazard. However, most existing studies in this field focus on short-run effects, in which the health status of the insured and provider behaviors remain unchanged. In this study, we analyze the medium-term impact of the 2003 coinsurance rate increase on inpatient care utilization by using public hospital data in Japan covering a 12-year period. Difference-in-differences and event study analyses robustly showed that the number of inpatients decreased a few years after the 2003 reforms. However, inpatient costs per patient day began to increase after four years, mainly due to increased medical resources. Eventually, despite the initial reduction in the number of inpatients, we found that the effects on total inpatient costs were negligible in the medium run. These findings indicate that many existing studies may overestimate the cost-containment effects of patient cost-sharing in the medium- and long-term.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"76 ","pages":"Article 101333"},"PeriodicalIF":1.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145614568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-06-02DOI: 10.1016/j.japwor.2025.101313
Hyunjung Cho , Gahee Bak , Junyun Kim , Hongshik Lee
This paper examines one of the theoretical hypotheses of Keller and Yeaple (2013) in order to investigate how trade costs and the level of firm-level knowledge intensity of a parent firm affect its knowledge transfer to foreign affiliates. Specifically, we focus on Keller and Yeaple (2013)’s second prediction that the share of intra-firm imports from the parent declines in trade costs, but this decline is weaker in knowledge-intensive settings. Using a panel of Korean manufacturing firms over 2007–2018, we separate knowledge transfer into (a) knowledge-embedded intra-firm trade and (b) direct communication (human resource secondments). We then analyze the role of trade costs and knowledge intensity on each channel via fixed effects and dynamic panel estimations. We find that trade costs significantly reduce intra-firm exports of knowledge-embedded inputs; however, a higher knowledge intensity mitigates this effect. On the other hand, trade costs and knowledge intensity do not exert a significant influence on direct communication.
{"title":"The knowledge transfer patterns of multinational firms: The evidence from Korean firm-level analysis","authors":"Hyunjung Cho , Gahee Bak , Junyun Kim , Hongshik Lee","doi":"10.1016/j.japwor.2025.101313","DOIUrl":"10.1016/j.japwor.2025.101313","url":null,"abstract":"<div><div>This paper examines one of the theoretical hypotheses of Keller and Yeaple (2013) in order to investigate how trade costs and the level of firm-level knowledge intensity of a parent firm affect its knowledge transfer to foreign affiliates. Specifically, we focus on Keller and Yeaple (2013)’s second prediction that the share of intra-firm imports from the parent declines in trade costs, but this decline is weaker in knowledge-intensive settings. Using a panel of Korean manufacturing firms over 2007–2018, we separate knowledge transfer into (a) knowledge-embedded intra-firm trade and (b) direct communication (human resource secondments). We then analyze the role of trade costs and knowledge intensity on each channel via fixed effects and dynamic panel estimations. We find that trade costs significantly reduce intra-firm exports of knowledge-embedded inputs; however, a higher knowledge intensity mitigates this effect. On the other hand, trade costs and knowledge intensity do not exert a significant influence on direct communication.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"75 ","pages":"Article 101313"},"PeriodicalIF":1.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144221449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-06-30DOI: 10.1016/j.japwor.2025.101321
Kodai Matsumoto
The purpose of this study is to verify whether receiving public assistance affects the well-being of the older people. When socially nondependency norms have formed, receiving public assistance may reduce well-being. The study focuses on older people in Japan, where public assistance is minimal. Based on the findings, for individuals aged 65 years and older, the negative impact is weak and often not statistically significant. However, welfare benefits have a positive effect on elderly men while exerting a negative effect on elderly women. Moreover, regional differences are found among the working-age population, but not among the elderly.
{"title":"Effects of welfare receipt on well-being: Evidence from older people in Japan","authors":"Kodai Matsumoto","doi":"10.1016/j.japwor.2025.101321","DOIUrl":"10.1016/j.japwor.2025.101321","url":null,"abstract":"<div><div>The purpose of this study is to verify whether receiving public assistance affects the well-being of the older people. When socially nondependency norms have formed, receiving public assistance may reduce well-being. The study focuses on older people in Japan, where public assistance is minimal. Based on the findings, for individuals aged 65 years and older, the negative impact is weak and often not statistically significant. However, welfare benefits have a positive effect on elderly men while exerting a negative effect on elderly women. Moreover, regional differences are found among the working-age population, but not among the elderly.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"75 ","pages":"Article 101321"},"PeriodicalIF":1.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-08-14DOI: 10.1016/j.japwor.2025.101322
Chun-Fu Hsu , Cho-Han Su , Kuo-I Chang
Japan has been addressed the largest market for cut flower imports and consumption in Asia. Since 2000, the floral industry in Japan has faced a decline in production due to an aging workforce and rising costs, while domestic demand for cut flowers has remained stable. The supply-demand gap has been boosted by increasing imports. The import and household consumption survey data from January 2002 to December 2021 and dynamic EC-AIDS model are employed to estimate the expenditure, own-price compensated, and cross-price elasticities between domestic and imported cut flowers in Japan. Our findings show that domestic floral business promotion policy enacted since 2014 had no significant impacts on structural change of demand between imported and domestic cut flowers. The empirical results indicate that domestic cut flowers in Japan are substitutes for those from major import source countries, though the degree of substitutions are limited. Notably, not only the complementary relationship of orchids but also an expenditure elasticity with 2.62 of Chrysanthemum between Japan and Taiwan, suggesting a greater sustainable potential in the Japanese Market.
{"title":"Towards sustainable floral business in Japan: Evidence from dynamic demand system between domestic and imported cut flowers","authors":"Chun-Fu Hsu , Cho-Han Su , Kuo-I Chang","doi":"10.1016/j.japwor.2025.101322","DOIUrl":"10.1016/j.japwor.2025.101322","url":null,"abstract":"<div><div>Japan has been addressed the largest market for cut flower imports and consumption in Asia. Since 2000, the floral industry in Japan has faced a decline in production due to an aging workforce and rising costs, while domestic demand for cut flowers has remained stable. The supply-demand gap has been boosted by increasing imports. The import and household consumption survey data from January 2002 to December 2021 and dynamic EC-AIDS model are employed to estimate the expenditure, own-price compensated, and cross-price elasticities between domestic and imported cut flowers in Japan. Our findings show that domestic floral business promotion policy enacted since 2014 had no significant impacts on structural change of demand between imported and domestic cut flowers. The empirical results indicate that domestic cut flowers in Japan are substitutes for those from major import source countries, though the degree of substitutions are limited. Notably, not only the complementary relationship of orchids but also an expenditure elasticity with 2.62 of Chrysanthemum between Japan and Taiwan, suggesting a greater sustainable potential in the Japanese Market.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"75 ","pages":"Article 101322"},"PeriodicalIF":1.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-06-03DOI: 10.1016/j.japwor.2025.101312
Teru Nishikawa , Kiyotaka Sato
This paper empirically examines the effect of the drastic amendment of the Foreign Exchange and Foreign Trade Act (FEFTA) in 1998 on the exchange rate exposure of ten Japanese automobile firms. By conducting panel estimation using the firm-level explanatory variables constructed originally, we find that (1) the degree of automobile firms’ exchange rate exposure increased significantly during the post-1998 FEFTA amendment period; (2) however, more profitable automobile firms with higher ROE and facing larger exchange rate volatility could reduce their exposures after the 1998 FEFTA amendment because they could conduct efficient operational hedging through expanding supply chains and more readily utilize efficient hedging instruments to reduce group-wide foreign exchange risk; (3) more sales in and exports to Southeast Asian countries significantly reduced automobile firms’ exposures, because they tended to invoice their exports to Southeast Asian countries not in USD but in the yen. Our findings would be insightful for Asian economies that move gradually toward foreign exchange liberalization. Efficient operational and financial hedging, as well as invoice currency choice, significantly affect the degree of exposure after foreign exchange liberalization.
{"title":"Foreign exchange liberalization and exchange rate exposure: Firm-level evidence of the Japanese Automobile Industry","authors":"Teru Nishikawa , Kiyotaka Sato","doi":"10.1016/j.japwor.2025.101312","DOIUrl":"10.1016/j.japwor.2025.101312","url":null,"abstract":"<div><div>This paper empirically examines the effect of the drastic amendment of the Foreign Exchange and Foreign Trade Act (FEFTA) in 1998 on the exchange rate exposure of ten Japanese automobile firms. By conducting panel estimation using the firm-level explanatory variables constructed originally, we find that (1) the degree of automobile firms’ exchange rate exposure increased significantly during the post-1998 FEFTA amendment period; (2) however, more profitable automobile firms with higher ROE and facing larger exchange rate volatility could reduce their exposures after the 1998 FEFTA amendment because they could conduct efficient operational hedging through expanding supply chains and more readily utilize efficient hedging instruments to reduce group-wide foreign exchange risk; (3) more sales in and exports to Southeast Asian countries significantly reduced automobile firms’ exposures, because they tended to invoice their exports to Southeast Asian countries not in USD but in the yen. Our findings would be insightful for Asian economies that move gradually toward foreign exchange liberalization. Efficient operational and financial hedging, as well as invoice currency choice, significantly affect the degree of exposure after foreign exchange liberalization.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"75 ","pages":"Article 101312"},"PeriodicalIF":1.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-09-01Epub Date: 2025-07-07DOI: 10.1016/j.japwor.2025.101320
Kiichi Tokuoka
Using Japanese household data, this study tests the hypothesis that experiencing growth in land prices over a lifetime influences homeownership. To test this experience hypothesis, this study calculates the lifelong weighted average of real land price growth while estimating a parameter that determines the shape of the weight function. The study then corroborates the results using US data. The results — using both Japanese and US data — support the hypothesis and are consistent with the belief channel; that is, experiencing price growth affects homeownership by influencing expectations of returns from housing investment.
{"title":"Do lifelong experiences of land prices affect homeownership in Japan?","authors":"Kiichi Tokuoka","doi":"10.1016/j.japwor.2025.101320","DOIUrl":"10.1016/j.japwor.2025.101320","url":null,"abstract":"<div><div>Using Japanese household data, this study tests the hypothesis that experiencing growth in land prices over a lifetime influences homeownership. To test this experience hypothesis, this study calculates the lifelong weighted average of real land price growth while estimating a parameter that determines the shape of the weight function. The study then corroborates the results using US data. The results — using both Japanese and US data — support the hypothesis and are consistent with the belief channel; that is, experiencing price growth affects homeownership by influencing expectations of returns from housing investment.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"75 ","pages":"Article 101320"},"PeriodicalIF":1.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Corrigendum to “A nowcasting model of industrial production using alternative data and machine learning approaches” [Jpn. World Econ. 71 (2024) 101271]","authors":"Kakuho Furukawa , Ryohei Hisano , Yukio Minoura , Tomoyuki Yagi","doi":"10.1016/j.japwor.2025.101297","DOIUrl":"10.1016/j.japwor.2025.101297","url":null,"abstract":"","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"74 ","pages":"Article 101297"},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-05-09DOI: 10.1016/j.japwor.2025.101311
Somyung Kim , Kiyool Ohk
This study examines the effects of investors’ regret aversion and regret premium on investment decision-making and stock returns in the Japanese and U.S. stock markets from a behavioral finance perspective. Using regret variables, we demonstrate that regret aversion significantly impacts asset pricing. Our empirical results show that investors demand a higher regret premium when holding high-regret assets, and this relationship persists even after controlling for various firm characteristics. By analyzing market states and dynamics, we find that regret aversion is particularly strong in down markets, though its influence weakens in up markets. Market dynamics analysis reveals that regret premiums are most pronounced during simultaneous upward market trends. Robustness tests using cumulative returns and industry-adjusted short-term return reversals further confirm the significant influence of regret on stock returns. Additionally, our analysis of irrational investor behavior, including the disposition effect and psychological price barriers, shows that regret aversion is more pronounced in the context of unrealized capital losses and when asset prices deviate significantly from psychological price barriers. This study provides comprehensive insights into the impact of regret aversion and market dynamics on investor behavior and asset pricing, challenging traditional finance theories grounded in the assumption of rational decision-making.
{"title":"Regret aversion in Japanese and U.S. stock markets: Analyzing the effects of market conditions","authors":"Somyung Kim , Kiyool Ohk","doi":"10.1016/j.japwor.2025.101311","DOIUrl":"10.1016/j.japwor.2025.101311","url":null,"abstract":"<div><div>This study examines the effects of investors’ regret aversion and regret premium on investment decision-making and stock returns in the Japanese and U.S. stock markets from a behavioral finance perspective. Using regret variables, we demonstrate that regret aversion significantly impacts asset pricing. Our empirical results show that investors demand a higher regret premium when holding high-regret assets, and this relationship persists even after controlling for various firm characteristics. By analyzing market states and dynamics, we find that regret aversion is particularly strong in down markets, though its influence weakens in up markets. Market dynamics analysis reveals that regret premiums are most pronounced during simultaneous upward market trends. Robustness tests using cumulative returns and industry-adjusted short-term return reversals further confirm the significant influence of regret on stock returns. Additionally, our analysis of irrational investor behavior, including the disposition effect and psychological price barriers, shows that regret aversion is more pronounced in the context of unrealized capital losses and when asset prices deviate significantly from psychological price barriers. This study provides comprehensive insights into the impact of regret aversion and market dynamics on investor behavior and asset pricing, challenging traditional finance theories grounded in the assumption of rational decision-making.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"74 ","pages":"Article 101311"},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-03-06DOI: 10.1016/j.japwor.2025.101299
Fabien Rondeau , Yushi Yoshida
With internationally fragmented processes of production via global value chains, value-added components of a country’s export include the importer’s contributions as well as that of exporters. The exchange rate sensitivity of export price reflects these value-added components. We examine the effect of value-added contributions of exporters and importers on the degree of exchange rate pass-through by focusing on the Japanese import prices by industries. Our results show that exchange rate pass-through increases for industries with a higher contribution of exporting countries’ value added and for industries with a lower contribution of the importing country’s value added. The differentials in value added among industries help explain the dynamics of exchange rate pass-through at the industry level.
{"title":"Global value chains and exchange rate pass-through into the import prices of Japanese industries","authors":"Fabien Rondeau , Yushi Yoshida","doi":"10.1016/j.japwor.2025.101299","DOIUrl":"10.1016/j.japwor.2025.101299","url":null,"abstract":"<div><div>With internationally fragmented processes of production via global value chains, value-added components of a country’s export include the importer’s contributions as well as that of exporters. The exchange rate sensitivity of export price reflects these value-added components. We examine the effect of value-added contributions of exporters and importers on the degree of exchange rate pass-through by focusing on the Japanese import prices by industries. Our results show that exchange rate pass-through increases for industries with a higher contribution of exporting countries’ value added and for industries with a lower contribution of the importing country’s value added. The differentials in value added among industries help explain the dynamics of exchange rate pass-through at the industry level.</div></div>","PeriodicalId":46744,"journal":{"name":"Japan and the World Economy","volume":"74 ","pages":"Article 101299"},"PeriodicalIF":1.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}