Shinichi Yamaguchi
| ■Faculty | The Center for Global Communications (GLOCOM) | |||
| ■Position | Assistant Professor (Koshi) | |||
Researcher Profile & Settings
Name
Affiliation
- The Center for Global Communications (GLOCOM) Assistant Professor (Koshi)
Education
- Apr. 2012- Mar. 2015Keio University Graduate School of Economics Ph.D.
- Apr. 2010- Mar. 2012Keio University Graduate School of Economics Master
- Apr. 2006- Mar. 2010Keio University Department of Economics
Degree
- Ph.D. (Economics)
Association Memberships
- JAPAN ASSOCIATION OF SIMULATION AND GAMING, THE INFOSOCIONOMICS SOCIETY, DIGITAL GAMES RESEARCH ASSOCIATION JAPAN, THE SOCIETY FOR SOCIO-INFORMATICS, THE JAPAN SOCIETY OF INFORMATION AND COMMUNICATION RESEARCH , THE ACADEMIC ASSOCIATION FOR ORGANIZATIONAL SCIENCE
Academic & Professional Experience
- Jul. 2018- TodayAssistant Professor, International University of Japan
- Apr. 2015- Jun. 2016International University of Japan
Research Activities
Research Areas
- Economics / Economic statistics
Published Papers
- The Boosting Effect of E-WOM on Macro-level Consumption: A Cross-Industry Empirical Analysis in JapanShinichi YAMAGUCHI, Hirohide SAKAGUCHI, Kotaro IYANAGAThe Review of Socionetwork Strategies 12(2) 167-181 Dec. 2018 [Refereed]
- Consumer Surplus of Information Sharing on the Internet in JapanShinichi YamaguchiInfoCom REVIEW(70) 2-11 Jan. 2018 [Refereed]
- The Significance of a Free-Business Model in Creative IndustriesYAMAGUCHI Shin-ichiJournal of Information and Communication Research 35(3) 23-34 Dec. 2017
The current development of information and communication technologies, such as the rapid popularization of the Internet and increasingly fast lines of communication, has dramatically changed the creative industries' business model. One of the noteworthy changes is the large increase in the distribution of a Freemium business model. Freemium is a new business model: a basic service is provided free of charge, but money is charged for virtual goods or other value-added functions. However, many economists and company managers are concerned about the substitution effect: consumers whose consumption is satisfied through free goods stop purchasing paid goods, causing revenues from paid goods to decrease. In this paper, I discuss the impact of free digital distribution on the number of physical sales in the music industry from the view point of complementary effects and substitution effects.
The results showed that the complementary effect of free digital distribution is greater than the substitution effect, so free digital distribution has a significant positive impact on the number of physical sales in the music industry. It was found that the number of physical sales increases by about 0.19% when free digital distribution views increase by 1%. In addition, short term free digital distribution does not have a significant positive effect, but long term free digital distribution does. Furthermore, the number of physical sales which resulted when free digital distribution was provided was significantly larger than when free digital distribution was not provided. From the above, it is proposed that music companies should provide long term free digital distribution.
- The Substitution Effect of Mobile Games on Console Games: An Empirical analysis of Japanese Video Game IndustryShinichi YAMAGUCHI, Kotaro IYANAGA, Hirohide SAKAGUCHI, Tatsuo TANAKAThe Review of Socionetwork Strategies 11(2) 95-110 Dec. 2017 [Refereed]
- An Empirical Analysis of Flaming Participants' Motives山口 真一InfoCom review(69) 61-74 Jul. 2017 [Refereed]
- An empirical analysis of network effects by users坂口洋英, 山口真一, 彌永浩太郎, 田中辰雄, 田中辰雄情報通信学会誌 34(4) 143-152 Mar. 2017 [Refereed]
- The Impact of Consumer Payments on Long-Term Sales in Freemium:YAMAGUCHI Shin-ichi, SAKAGUCHI Hirohide, IYANAGA Koutaro, TANAKA TatsuoJournal of Information and Communication Research 34(3) 69-79 Dec. 2016 [Refereed]
Freemium is a new business model in information and communication industries: a basic service is provided free of charge, but money is charged for virtual goods or other value-added functions. The number of freemium services is increasing rapidly. Particularly, mobile games that do not set a flat-rate charge but which charge for virtual goods have high profitability and a high growth rate. However, we do not deeply understand the freemium business model because there are few empirical studies. In this paper, I discuss the impact of consumer payments on long-term sales in mobile game industries. The results showed that ARPPU (average revenue per paid user) from the previous term (t-1) has a significant non-linear effect on sales for the current term (t). Furthermore, sales(t) became the maximum value when ARPPU(t-1) was about 11,754 yen. Therefore, it is suggested that firms should operate ARPPU at approximately 11,754 yen from the viewpoint of long-term sales maximization. In addition, non-flat-rate charge freemium has received wide attention as a successful technique. The results of this study may be applicable to other industries besides mobile games.
- AN EMPIRICAL ANALYSIS OF THE GAME INDUSTRY TO DEMONSTRATE DECREASED IMPACT OF NETWORK EXTERNALITIES OVER TIMEShinichi YamaguchiOrganizational science 49(3) 60-71 Mar. 2016 [Refereed]
- An Empirical Analysis of Actual Examples of "Flaming" and Participants CharacteristicsYAMAGUCHI Shin-ichiJournal of Information and Communication Research 33(2) 53-65 Sep. 2015 [Refereed]In this paper, I perform the six hypotheses testing about flaming actual situation and flaming participants characteristics by empirical analysis. Flaming is defined that slander comments rush to social media for the speech content and actions of a person. I. The number of flaming has increased in recent years. II Flaming is more likely to occur in companies. III. The number of flaming participants is small. IV. Flaming participants are heavy Internet users. V. Flaming participants have less annual income. VI. Flaming participants believe that may be acceptable to insult others on the Internet.
First, based on an analysis of the descriptive statistics, hypothesis I - III were all confirmed. In other words, a lot of flaming has occurred and caused damage to human psychologies and corporate revenues in recent years, however, the number of flaming participants was very small. It was about 1.5% of the Internet users. In addition, the number of flaming was 200 per year.
Second, on the basis of the econometric analysis it was found that the five variables, "male", "annual income", "having children", "having unpleasant feelings on the Internet" and "may be acceptable to insult others on the Internet" were associated with flaming participation behavior. On the other hand, the variables such as "education" and "Internet time" had no significant effect. From these facts, while the hypothesis VI was supported, IV and V were rejected. - The Impact of Paid and Free Digital Distribution on Physical Sales:An Empirical Analysis of the Late-Night Animation MarketYAMAGUCHI ShinichiJournal of Information and Communication Research 33(1) 15-27 Jun. 2015 [Refereed]In this paper, I discuss the impact that paid and free digital distribution have on the number of physical sales in the creative industry from the view point of complementary effects and substitution effects. Additionally, using panel data in which products are treated as groups and episodes of TV programs are treated as series, I estimate the relationship between the number of digital distribution views and the number of package physical sales in the late-night animation market.The results showed that the complementary effect of free digital distribution is greater than a substitution effect, so free digital distribution has a significant positive impact on the number of physical sales. It was found that the number of physical sales increases by about 0.10% when free digital distribution views increase by 1%. In addition, paid digital distribution had no significant effect. From the above, it is proposed that digital distribution leads to an increase in the consumer surplus and the producer surplus in late-night animation market at least.Furthermore, while a more detailed analysis revealed that both paid and free digital distribution had an effect on physical sales of products aimed at men, no such effects were seen for products aimed at women. In addition, free digital distribution of original works has a positive effect on physical sales, while paid and free digital distribution of other works have no effects. It was also found that free digital distribution of works by unknown producers has a positive effect on physical sales, while paid and free distribution of works by well-known producers have no effects.
- The Impact of Copyright Infringement on Phisical Sales in the Game IndustryYAMAGUCHI, ShinichiInformation and Communications Policy Review 9 178-201 2014 [Refereed]
- Behavioral Determinants of Social Game Users : Empirical Analysis of The Network EffectYAMAGUCHI, ShinichiInfoCom review(62) 2-17 2014 [Refereed]
- Payment Behavior Determinants and Addiction of Mobile Content UsersYAMAGUCHI, ShinichiInformation and Communications Policy Review 7 109-131 2013 [Refereed]
- The Effect of Free Online Distribution on Content Product Sales : An Empirical Analysis on BD/DVD Sales of Television ContentYAMAGUCHI, ShinichiInfoCom review(60) 2-14 2013 [Refereed]
Books etc
- ネット炎上の研究田中 辰雄, 山口 真一Joint Work勁草書房 Apr. 2016 4326504226
- ソーシャルゲームのビジネスモデル: フリーミアムの経済分析田中 辰雄, 山口 真一Joint Work勁草書房 May 2015 4326504064
Conference Activities & Talks
- The Impact of Official and Informal Free Goods: An Empirical Analysis of Creative Industries in JapanShinichi Yamaguchi, Hirohide Sakaguchi, Kotaro Iyanaga, Tatsuo Tanaka44th Annual Conference of the European Association for Research in Industrial Economics (EARIE) Sep. 2017
- Prescription Prediction towards Computer-Assisted Diagnosis for Kampo MedicinceMi, Xiaoyu et al.International Conference on Computer Application Technologies 2015 Sep. 2015
- International Competitiveness and Policy Support of Social GamesYAMAGUCHI, ShinichiJul. 2015
- An Empirical Analysis of Flaming Occurrence and the Consumer Characteristics of Flaming ParticipantsYAMAGUCHI, ShinichiInternational Conference on Computer Application Technologies 2015 Jun. 2015
- The Impact of Free Digital Distribution on Physical Sales:An Empirical Study of the Music Industry in JapanYAMAGUCHI ShinichiTransactions of the Academic Association for Organizational Science Jun. 2015Sales strategy that uses free digital distribution is a new business model in the creative industry. However, it has raised many important management questions the extent to which free digital distribution either crowd out or complement consumption of products. In this paper, we analyze the effect of free digital distribution on physical sales in Japanese music market. The results showed that the complementary effect of free digital distribution is greater than a substitution effect, so free digital distribution has a significant positive impact on the number of physical sales. It was found that the number of physical sales increases by about 0.27% when free digital distribution views increase by 1%. Furthermore, while a more detailed analysis revealed free digital distribution of works by unknown producers has a positive effect on physical sales, while free distribution of works by well-known producers have no effects. In addition, free digital distribution of long movies has a strong positive effect on the number of physical sales than one of short movies. It was also found that free digital distribution of pop music and idol music has a positive effect on physical sales, while free digital distribution of other music have no effects.
- Payment Behavior Determinant of Social Games: Empirical Analysis of Network EffectsYAMAGUCHI, ShinichiMay 2013
Misc
- The Economic Impact of Information Sharing on the InternetShinichi Yamaguchi et al.Innovation Nippon 2015 Research Report Feb. 20160