Performance information

• A choice experiment for different preparation methods of eggs: The impact of sensory, health, and animal welfare　　　　　　　　　　　　　　　
  Kenju Akai; Keiko Aoki
  Food Quality and Preference, Volume：105348, May 2025, [Reviewed], [Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1016/j.foodqual.2024.105348
  DOI ID：10.1016/j.foodqual.2024.105348, ORCID：169725226
• Relationship between health behavior compliance and prospect theory-based risk preferences during a pandemic of COVID-19　　　　　　　　　　　　　　　
  Yan Zhou; Keiko Aoki; Kenju Akai
  China Economic Review, First page：102181, Last page：102181, Apr. 2024, [Reviewed]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.chieco.2024.102181
  DOI ID：10.1016/j.chieco.2024.102181, ISSN：1043-951X
• A comparison between Spain and Japan with respect to the color, expected taste scale, and sustainability of strawberries: A choice experiment　　　　　　　　　　　　　　　
  Keiko Aoki; Kenju Akai
  Food Quality and Preference, Volume：103, First page：104671, Last page：104671, Jan. 2023, [Reviewed], [Lead, Corresponding]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.foodqual.2022.104671
  DOI ID：10.1016/j.foodqual.2022.104671, ISSN：0950-3293, ORCID：149251312
• Testing hypothetical bias in a choice experiment: An application to the value of the carbon footprint of mandarin oranges
  Keiko Aoki; Kenju Akai
  PLOS ONE, Volume：17, Number：1, First page：e0261369, Last page：e0261369, Jan. 2022, [Reviewed]
  This study investigates “hypothetical bias,” defined as the difference in the willingness to pay for a product attribute between hypothetical and non-hypothetical conditions in a choice experiment, for the carbon footprint of mandarin oranges in Japan. We conducted the following four treatments: a non-hypothetical lab economic experiment, a hypothetical lab survey, a hypothetical online survey, and a hypothetical online survey with cheap-talk. Each treatment asked participants to choose one of three oranges based on price and carbon emissions level. Next, participants were asked to answer questions on demographics and the following three kinds of environmental factors: environmental consciousness, purchasing behavior for goods with eco-labels, and daily environmental behavior. Using the random parameter logit model, the willingness to pay per 1g of carbon emission reduction were 0.53 JPY, 0.52 JPY, 0.54 JPY, and 0.58 JPY in the non-hypothetical lab economic experiment, hypothetical lab survey, hypothetical online survey and hypothetical online survey with cheap-talk, respectively. The complete combinatorial test of the willingness to pay for carbon emission reductions indicates no hypothetical bias between any treatment combinations. Our findings reveal that environmental attributes for food are less likely to show hypothetical bias than other goods. The results of the main effect with an interaction term show that environmental consciousness reduces the coefficients of carbon emissions in all treatments. Therefore, a psychological scale is useful for showing whether hypothetical bias emerges with treatment or participants’ personal backgrounds.
  Public Library of Science (PLoS), Scientific journal
  DOI：https://doi.org/10.1371/journal.pone.0261369
  DOI ID：10.1371/journal.pone.0261369, ISSN：1932-6203, eISSN：1932-6203, ORCID：106596530
• Redesigning parking facilities using a parking service satisfaction survey at Izumo local airport in Japan　　　　　　　　　　　　　　　
  Kenju Akai; Keiko Aoki; Yasuko Ueda; Kazuo Kanetsuku
  Transportation Research Interdisciplinary Perspectives, Volume：11, First page：100433, Last page：100433, Sep. 2021, [Reviewed]
  Elsevier BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.trip.2021.100433
  DOI ID：10.1016/j.trip.2021.100433, ISSN：2590-1982
• Effect of disclosing the relation between effort and unit reliability on system reliability: An economic experiment　　　　　　　　　　　　　　　
  Ryoji Makino; Kenju Akai; Jun-ichi Takeshita; Takanori Kudo; Keiko Aoki
  PLOS ONE, Volume：16, Number：4, First page：e0249722, Last page：e0249722, Apr. 2021, [Reviewed], ［International magazine］
  The purpose is to experimentally examine the effect of disclosing the risk probability of each unit in a production system on human behavior and the resulting system reliability. We used an economic experiment based on the theoretical model of Hausken (2002) to evaluate the effect of disclosing the relation between effort and unit reliability. We conducted first the non-disclosed-risk experiment and then the disclosed-risk experiment within subjects in both series and parallel systems. Our experimental results show that disclosing the relation between effort and unit reliability has two positive effects. First, subjects succeeded in improving the system reliability while cutting back on efforts to reduce the risk of their units when the risk probability was disclosed. In each system, the disclosed-risk condition achieves significantly higher system reliability on average than does the non-disclosed-risk condition, although the average level of effort is significantly lower under the disclosed-risk condition than under the non-disclosed-risk condition. Second, disclosing the risk probability simplified the subjects’ decision-making process and reduced its cost because subjects made their decisions on the amount of effort to exert based only on the risk probability information without considering other factors, such as the number of accidents.
  Public Library of Science (PLoS), English, Scientific journal
  DOI：https://doi.org/10.1371/journal.pone.0249722
  DOI ID：10.1371/journal.pone.0249722, eISSN：1932-6203, PubMed ID：33826677, PubMed Central ID：PMC8026045
• Continuous efforts leads to a value for hypertensive patients: Development of a casual smart Na/K meter and smart Na/K application linked by NFC to android　　　　　　　　　　　　　　　
  Kenju Akai; Tetsuya Hirotomi; Aoi Mishima; Keiko Aoki; Tsunetaka Kijima; Toru Nabika
  International Journal of Automation Technology, Volume：14, Number：5, First page：791, Last page：799, 2020, [Reviewed]
  © 2020, Fuji Technology Press. All rights reserved. This study develops a casual smart Na/K meter to measure the sodium and potassium in urine for hypertensive patients. To prevent hypertension from leading to cardiopathies, it is useful to reduce salt intake. The Omron Healthcare Co., Ltd. lunched the prototype, a casual Na/K meter to measure the salt intake from a diet. Nevertheless, it lacks the function to make the patients grasp the historical data. This study improves that meter by adding the NFC and developing the software application linked to Android smartphones and smart watches. Smartphones can store the data and display the historical data. Smart watches make up a part of their daily lives by alerts and messages. The concept of this study provides a continuous value for hypertensive patients. That value is similar to the learning value but it exists beyond the learning effect. For the learning value, after the subjects learn something and obtain the skills, ability, and knowledge, the value is fixed and completed. On the other hand, for the continuous value, the learning value is also included and the subjects receive the learning value; however, they need to continue that behavior until death. If they stop reducing salt intake, they return to hypertension. If they get satisfied with obtaining the learning value and stop their actions, they never receive the continuous value that exists beyond the learning value. The continuous value is brewed in the transtheoretical model of health behavior change. Throughout these stages, to encourage their behavioral change and obtain the continuous value, this study employs Fogg’s theory applied to developing the communication devices. The application stocks the historical data and displays it on the smartphones. The smart watches classify alerts into five colored displays from green (good) to red (bad). It can be helpful for the patients to make the reduction of salt intake as their dietary habit. In the future, the appli cation needs to be improved for making patients adapt with their diets and motivations.
  Scientific journal
  DOI：https://doi.org/10.20965/ijat.2020.p0791
  Scopus：https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85090935077&origin=inward
  Scopus Citedby：https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85090935077&origin=inward
  DOI ID：10.20965/ijat.2020.p0791, ISSN：1881-7629, eISSN：1883-8022, SCOPUS ID：85090935077
• The impact of information on taste ranking and cultivation method on rice types that protect endangered birds in Japan: Non-hypothetical choice experiment with tasting　　　　　　　　　　　　　　　
  Keiko Aoki; Kenju Akai; KIYOKAZU Ujiie; Takeshi Shimmura; Nariaki Nishino
  Food Quality and Preference, Volume：75, Number：75, First page：28, Last page：38, Jul. 2019, [Reviewed]
  We investigate consumers' reactions to information on rice types produced using a cultivation method that protects the crested ibis (Nipponia nippon), a symbol of the endangered birds of Japan. We employ a non-hypothetical choice experiment with real monetary incentives, in which participants taste three types of rice—Niigata rice, Sado rice, and Sado-Ibis certified rice (Ibis rice)—and choose one to take home. The participants make decisions twice in each choice set, once before and once after tasting. Three information treatments are used: information about taste ranking from chefs and consumers, cultivation method, and no-information. Comparing the expected and actual willingness to pay (WTP) for Ibis rice, only the cultivation method information increases the WTP, which triples. The WTP in the taste ranking information treatment becomes lower among the participants who refer to chefs, but there is no significant difference in preferences between the expected and actual stages among all participants. For Sado rice, the WTP increases when we provide no-information or information on the cultivation method. In both cases, the WTP changes from negative to positive relative to Niigata rice; however, this WTP is less than that for Ibis rice. These results imply that consumers are more sensitive to information of process and effort for a cultivation method that protects endangered species than to the information about taste ranking.
  Elsevier, English
  DOI：https://doi.org/10.1016/j.foodqual.2018.11.021
  DOI ID：10.1016/j.foodqual.2018.11.021, ISSN：0950-3293, CiNii Articles ID：120006708498, CiNii Books ID：AA10827650, Web of Science ID：WOS:000465064000005
• A choice experiment to compare preferences for rice in Thailand and Japan: The impact of origin, sustainability, and taste　　　　　　　　　　　　　　　
  Keiko Aoki; Kenju Akai; Kiyokazu Ujiie
  FOOD QUALITY AND PREFERENCE, Volume：56, First page：274, Last page：284, Mar. 2017, [Reviewed]
  Japan and Thailand have joined the Trans-Pacific Partnership, which introduces cheaper US-produced rice into the domestic markets of these countries. This study investigates consumers' preferences for cheaper US-produced rice in Japan and Thailand. To compare the willingness to pay for rice in these two countries, we employ a choice experiment that comprises five attributes: country of origin, fair trade label, cultivation method, taste ranking, and price. The random parameter logit model estimation results show that Japanese people prefer organic rice more than Thai people do and dislike US rice much more than Thai people do. Thai people prefer fair trade more than Japanese people do. The willingness to pay for taste ranking is identical across these countries. Taste ranking has the lowest and second lowest willingness to pay in Japan and Thailand, respectively. Further, gender is the most influential socioeconomic characteristic. Japanese women prefer premium rice with various attributes and dislike US-produced rice more than Thai women do. These results suggest that US-produced rice is unacceptable for Japanese people regardless of the price level, while it could be acceptable for Thai people if the price level is adequately low. Additionally, it is reasonable for Japanese rice producers to grow organic rice to compete in the market, while Thai rice suppliers prefer to enhance their fair trade labels. (C) 2016 Elsevier Ltd. All rights reserved.
  ELSEVIER SCI LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.foodqual.2016.03.001
  DOI ID：10.1016/j.foodqual.2016.03.001, ISSN：0950-3293, eISSN：1873-6343, Web of Science ID：WOS:000389163000007
• Changing Investment Behavior under Disclosure of CO₂ Emissions: An Approach with Economic Experiments　　　　　　　　　　　　　　　
  西野成昭; 本田智則; 赤井研樹; 青木恵子; 稲葉敦
  日本LCA学会誌, Volume：13, Number：1, First page：60‐72, Jan. 2017, [Reviewed]
  Japanese
  DOI：https://doi.org/10.3370/lca.13.60
  DOI ID：10.3370/lca.13.60, ISSN：1880-2761, J-Global ID：201702221805860533
• An economic lab experiment for the best offer and approval in face-to-face service interaction situation　　　　　　　　　　　　　　　
  Kenju Akai; Keiko Aoki; Kenta Onoshiro
  Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Volume：10371, First page：64, Last page：74, 2017, [Reviewed]
  This article investigates what types of social distance affect the best offer from an employee and its approval from a customer in general service situation. We conduct the deception game (Gneezy, 2005) and investigate the effects of the social distance (face-to-face vs. anonymous interaction) in a laboratory experimental economics method. We observed increases in the rate at which employees made best offers and the rates at which customers accepted offers when face-to-face interactions were conducted. But a statistically significant difference was not observed. Also, the level of trust in others reported by the subject playing the role of the employee had a statistically significant positive effect in cases in which the employee made a best offer. It was also observed that, regardless of whether the interaction was conducted face to face or anonymously, if the subject playing the role of the customer exhibited a low level of tolerance for falsehood, he or she was less likely to accept offers.
  Springer Verlag, English, International conference proceedings
  DOI：https://doi.org/10.1007/978-3-319-61240-9_7
  DOI ID：10.1007/978-3-319-61240-9_7, ISSN：1611-3349, SCOPUS ID：85025143317, Web of Science ID：WOS:000457334400007
• The Value of Community for Resolving Social Isolation
  Keiko Aoki; Kenju Akai; Nariaki Nishino
  Serviceology for Designing the Future, First page：263, Last page：271, Oct. 2016, [Reviewed], [Lead]
  Springer Nature, English
  DOI：https://doi.org/10.1007/978-4-431-55861-3_18
  DOI ID：10.1007/978-4-431-55861-3_18, ORCID：30527921
• 回復期における看護師に期待される口腔機能管理の可視化から連携を考える　　　　　　　　　　　　　　　
  永長周一郎; 寺尾洋; 園井教裕; 木森久人; 品川隆; 太田博見; 中村弘之; 青木恵子; 赤井研樹; 角保徳; 八重田淳
  老年歯科医学, Volume：30, Number：2, First page：103, Last page：104, Sep. 2015, [Reviewed]
  Japanese
  ISSN：0914-3866, J-Global ID：201502215283074206
• 生態系サービスを保つ持続可能な農業システムのマルチエージェントシミュレーション　　　　　　　　　　　　　　　
  赤井研樹; 工藤孝則; 青木恵子; 西野成昭
  自動制御連合講演会(CD-ROM), Volume：58th, First page：ROMBUNNO.2E3‐4, 2015, [Reviewed]
  Japanese
  J-Global ID：201602234882593069
• An Evaluation of Rapid Oral Bacterial Detection Apparatus for an Oral Healthcare Service
  Keiko Aoki; Kenju Akai; Noriko Yoshida; Yoshiko Aoki
  Serviceology for Services, First page：159, Last page：168, Jul. 2014, [Reviewed], [Lead]
  Springer Nature, English
  DOI：https://doi.org/10.1007/978-4-431-54816-4_18
  DOI ID：10.1007/978-4-431-54816-4_18, ORCID：30527871
• An Actual Purchasing Experiment for Investigating the Effects of Eco-Information on Consumers' Environmental Consciousness and Attitudes Towards Agricultural Products　　　　　　　　　　　　　　　
  Aoki Keiko; Akai Kenju; Ujiie Kiyokazu; Shinmura Takeshi; Nishino Nariaki
  International Journal of Automation Technology, Volume：8, Number：5, First page：688, Last page：697, 2014, [Reviewed]
  

  This study investigates the effects of eco-information on the environmental consciousness and attitudes of consumers towards agricultural products. We focus on Japanese rice to provide recommendations to protect the Ibis, an endangered bird in Japan, and evaluate how Ecologically Conscious Consumer Behavior (ECCB) affect consumers' Willingness To Pay (WTP) via the choice experiment method. Participants are provided with the necessary eco-information pertaining to rice production, and are required to taste and purchase the rice. The results indicate that consumers with high ECCB display higher WTP after they are provided with the necessary eco-information pertaining to rice production.

  
  Fuji Technology Press Ltd., English
  DOI：https://doi.org/10.20965/ijat.2014.p0688
  DOI ID：10.20965/ijat.2014.p0688, ISSN：1881-7629, CiNii Articles ID：130007674080, ORCID：14409155, SCOPUS ID：84906976719
• Do Consumers Select Food Products Based on Carbon Dioxide Emissions?　　　　　　　　　　　　　　　
  Keiko Aoki; Kenju Akai
  ADVANCES IN PRODUCTION MANAGEMENT SYSTEMS: COMPETITIVE MANUFACTURING FOR INNOVATIVE PRODUCTS AND SERVICES, AMPS 2012, PT II, Volume：398, Number：PART 2, First page：345, Last page：352, 2013, [Reviewed]
  This study investigates whether consumers select foods based on the levels of carbon dioxide emissions by a real choice experiment. Respondents are asked to purchase one orange based on price and level of CO2 emissions under no monetary incentives. The willingness to pay estimate for the reduction of 1g of CO2 emissions per orange is significantly lower for the low environmentally conscious group than it is for the high environmentally conscious group.
  SPRINGER-VERLAG BERLIN, English, International conference proceedings
  DOI：https://doi.org/10.1007/978-3-642-40361-3_44
  DOI ID：10.1007/978-3-642-40361-3_44, ISSN：1868-4238, ORCID：14409156, SCOPUS ID：84887909559, Web of Science ID：WOS:000391209900044
• Does the Carbon Footprint Enhance the Sustainability Food Production and Transportation Service System? Real Buying Experiment in Japan　　　　　　　　　　　　　　　
  Keiko Aoki; Kenju Akai
  ADVANCES IN PRODUCTION MANAGEMENT SYSTEMS, APMS 2013, PT II, Volume：415, First page：18, Last page：25, 2013, [Reviewed]
  To examine whether the carbon footprint induce the sustainability local food production and service system, this study investigate the relationship between consumers' environmental consciousness and willingness to pay for carbon dioxide emissions on food products by using a choice experiment under the real buying experiment. The results show that consumers with higher environmental consciousness value the higher WTP for the reduction of carbon dioxides.
  SPRINGER-VERLAG BERLIN, English, International conference proceedings
  ISSN：1868-4238, Web of Science ID：WOS:000391207800003
• Does an Information Service Provider Improve the Market?　　　　　　　　　　　　　　　
  Kenju Akai; Keiko Aoki; Nariaki Nishino
  ADVANCES IN PRODUCTION MANAGEMENT SYSTEMS, APMS 2013, PT II, Volume：415, First page：26, Last page：32, 2013, [Reviewed]
  This study aims to theoretically analyze whether the information service provider improves the market efficiency. We construct a model where a good supplied by a producer has a risk to be harmful for a consumer because of an accident and it brings monetary losses to both consumers and producers. The accident risk is endogenously determined by the efforts of producers and consumers and the information of safety provided by the producers. The information service provider requires producers to provide information and certifies the credibility of information. In the equilibrium, if the entry cost for the information service provider is small, the optimal effort levels spent by the consumer and producer increase and the risk of accident decreases, which improves the market efficiency.
  SPRINGER-VERLAG BERLIN, English, International conference proceedings
  ISSN：1868-4238, Web of Science ID：WOS:000391207800004
• A Choice Experiment for Air Travel Services　　　　　　　　　　　　　　　
  Kenju Akai; Keiko Aoki; Nariaki Nishino
  ADVANCES IN PRODUCTION MANAGEMENT SYSTEMS: COMPETITIVE MANUFACTURING FOR INNOVATIVE PRODUCTS AND SERVICES, AMPS 2012, PT II, Volume：398, Number：PART 2, First page：353, Last page：360, 2013, [Reviewed]
  Our purpose of this study is evaluating preferences for air travel services connected between the east and west central cities in Japan, Tokyo and Osaka, to consider the appropriate re-allocation design of airports in Japan. We employ a choice experiment and recruit more than 500 respondents in east and west areas in Japan and investigate their preferences. Our results are as follows. The existing airline connected west hub airport, Itami, in Osaka and east hub airport, Haneda, in Tokyo is much preferred to the other lines connected cities surrounding Osaka and Tokyo. Kobe and Kansai international airports are preferable to Itami airport, while Haneda is the much preferable to Ibaraki and Narita international airports. Increasing the mileage program and the availability of web check-in have positive significant effects but these impacts are small. These results imply that the most important factor for using air travel services is convenience for traveling by using the nearest airports. In this meaning, if the new airlines can be connected to Haneda, the government's re-allocation plan from Itami airport to Kobe and Kansai international airports has a chance to succeed to minimize the economic efficiency loss for the people traveling between east and west areas in Japan.
  SPRINGER-VERLAG BERLIN, English, International conference proceedings
  DOI：https://doi.org/10.1007/978-3-642-40361-3_45
  DOI ID：10.1007/978-3-642-40361-3_45, ISSN：1868-4238, ORCID：14409157, SCOPUS ID：84887932638, Web of Science ID：WOS:000391209900045
• On the employment preferences of nurses using an Internet choice experiment　　　　　　　　　　　　　　　
  青木 恵子; 赤井 研樹; 青木 喜子
  医療経済研究, Volume：23, Number：2, First page：111, Last page：127, Jun. 2012, [Reviewed]
  医療経済研究機構, Japanese, Scientific journal
  ISSN：1340-895X, CiNii Articles ID：40019389625, CiNii Books ID：AN10465438
• 相談することで高齢者が投資詐欺にあうことを防げるか : 実験を利用した検証　　　　　　　　　　　　　　　
  北村 智紀; 中嶋 邦夫; 赤井 研樹; 青木恵子
  Volume：0, Number：94, First page：62, Last page：71, 2012, [Reviewed]
  Japanese, Scientific journal
  ISSN：0914-4609, CiNii Articles ID：40019298079, CiNii Books ID：AN10217141
• 近接した公立病院における産婦人科共同運用についての包括的研究　　　　　　　　　　　　　　　
  橋本洋之; 久松武志; 福井温; 青木恵子; 赤井研樹; 瀋俊毅; 馬場幸子; 荻田和秀; 光田信明; 長松正章; 森重健一郎; 木村正; 西條辰義
  周産期学シンポジウム, Number：28, First page：83, Last page：86, Sep. 2010
  Japanese
  ISSN：1342-0526, J-Global ID：201002258918504095, CiNii Articles ID：50007585585
• Analysis of the factors influencing maternity institution choice among pregnant women in Sennan area of Osaka prefecture by applying choice experiment method　　　　　　　　　　　　　　　
  瀋 俊毅; 青木 恵子; 赤井 研樹; et al.
  Journal of health care and society, Volume：20, Number：2, First page：185, Last page：197, Jul. 2010, [Reviewed]
  医療科学研究所, Japanese, Scientific journal
  ISSN：0916-9202, CiNii Articles ID：40017251342, CiNii Books ID：AN10372213
• Consumer reaction to information on food additives: Evidence from an eating experiment and a field survey　　　　　　　　　　　　　　　
  Keiko Aoki; Junyi Shen; Tatsuyoshi Saijo
  JOURNAL OF ECONOMIC BEHAVIOR & ORGANIZATION, Volume：73, Number：3, First page：433, Last page：438, Mar. 2010, [Reviewed]
  Both the presence/absence of food additives and provision of accurate information pertaining to the same are considered to be important factors affecting individuals' purchase decisions. In this paper, we apply the choice experiment approach under both real (the laboratory experiment) and hypothetical (the field survey) environments to investigate how consumers value a food additive (sodium nitrite) present in ham sandwiches and whether the provision of information about sodium nitrite affects individuals' choice. The results suggest that in both real and hypothetical situations, participants do not favor the use of sodium nitrite, per se, regardless of whether or not the detailed information is provided. Moreover, the willingness to pay values for ham sandwiches without sodium nitrite are estimated to be lower in the experiment and higher in the survey after negative and positive information is provided, implying that the effect of information provision differs between these two environments. In addition, further investigation of the participants' reasons for choosing ham sandwiches indicates that the information related to flavor seems to have more influence on the consumers' choice behavior in a real situation, while the information associated with health risk is like to play a relatively more important role in a hypothetical situation. (C) 2009 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jebo.2009.11.007
  DOI ID：10.1016/j.jebo.2009.11.007, ISSN：0167-2681, Web of Science ID：WOS:000276124800011
• Effects of prior investment and personal responsibility in a simple network game
  Aoki, K.; Ohtsubo, Y.; Rapoport, A.; Saijo, T.
  Current Research in Social Psychology, Volume：13, Number：2, First page：10, Last page：21, 2007, [Reviewed]
  Scientific journal
  ORCID：14409159, SCOPUS ID：35549004070

• 塩分摂取量と血圧上昇に関する正負の情報が高血圧罹患者と非罹患者の減塩価値に与える影響:選択型実験法を用いたアンケート調査　　　　　　　　　　　　　　　
  赤井研樹; 青木恵子; 木島庸貴; 磯村実; 並河徹
  日本高血圧学会臨床高血圧フォーラムプログラム・抄録集(CD-ROM), Volume：7th, First page：180, 19 May 2018
  Japanese
  J-Global ID：201902283220770285
• 低ADL患者の口腔ケアと口腔内細菌数の定点観測を通した誤嚥性肺炎予防の取り組み　　　　　　　　　　　　　　　
  赤井研樹; 青木恵子
  日本口腔ケア学会雑誌, Volume：12, Number：3, First page：203, Last page：203, 28 Apr. 2018
  (一社)日本口腔ケア学会, Japanese
  ISSN：1881-9141, 医中誌Web ID：2019016289, J-Global ID：201802276304298898
• 看護師による細菌数測定装置「細菌カウンタ」を用いた中期的口腔ケア:慢性期低ADL高齢入院患者の場合　　　　　　　　　　　　　　　
  青木恵子
  日本口腔ケア学会雑誌, Volume：11, Number：3, First page：172, 22 Apr. 2017
  Japanese
  ISSN：1881-9141, J-Global ID：201802264065171918
• オンライン書籍要約サービスの消費者需要分析　　　　　　　　　　　　　　　
  赤井研樹; 都築辰弥; 青木恵子; 西野成昭
  自動制御連合講演会(CD-ROM), Volume：59th, First page：ROMBUNNO.ThB8‐5, 2016
  Japanese
  J-Global ID：201702218651006379
• 回復期における看護師に期待される口腔機能管理の可視化から連携を考える　　　　　　　　　　　　　　　
  永長周一郎; 寺尾洋; 園井教裕; 木森久人; 品川隆; 太田博見; 中村弘之; 青木恵子; 赤井研樹; 角保徳; 八重田淳
  日本老年医学会雑誌, Volume：52, First page：54, Last page：55, 25 May 2015
  (一社)日本老年歯科医学会, Japanese
  ISSN：0300-9173, 医中誌Web ID：2016013630, J-Global ID：201502234463896321
• 選択型実験法を用いた看護師の職場選択に対する選好調査 (2010年度(第14回)研究助成「研究要旨」)　　　　　　　　　　　　　　　
  青木 恵子; 赤井 研樹; 青木 喜子
  Number：203, First page：40, Last page：42, Nov. 2011
  Japanese
  CiNii Articles ID：40019077601, CiNii Books ID：AN10526190
• Can Consulting with Other People Prevent Elderly Persons from Becoming Victims of Fraudulent Investments? An Experimental Study　　　　　　　　　　　　　　　
  Kitamura Tomoki; Nakashima Kunio; Akai Kenju; Aoki Keiko
  Journal of Behavioral Economics and Finance, Volume：4, Number：0, First page：139, Last page：140, 2011
  We experimentally examine whether consulting with other persons before making investment decisions can prevent elderly people from becoming victims of fraudulent investments. Elderly subjects are faced with deciding a hypothetical investment allocation between a fraudulent investment and an ordinary stock investment trust. The fraudulent investment’s principal is guaranteed and has a far higher expected return compared to the current financial market condition. Subjects are asked to decide two times for different combinations of the two products. We set up two treatment groups. One group is such that subjects have to consult with each other about investments before deciding the allocations, and the other group is such that subjects have to decide by themselves. We compare the investment allocations of the two groups. We find that, for the first decision, subjects who consult with each other have a higher allocation to the fraudulent investment. This suggests that consulting with families or other close relations may not help prevent elderly people from becoming victims of fraudulent investment. We also find that, for the second decision, investment allocation to fraudulent investment is less than that of the first decision for subjects who consult with each other. This suggests that experience may be important for effective consulting. It may be helpful to expose elderly people to the details of fraudulent investment technique in order to reduce the number of victims. It may be also useful to point out specific contents of consulting such as comparing current and past saving interest rates.
  Association of Behavioral Economics and Finance, Japanese
  DOI：https://doi.org/10.11167/jbef.4.139
  DOI ID：10.11167/jbef.4.139, ISSN：2185-3568, CiNii Articles ID：130004554884
• Consumer reaction to information on food additives: Evidence from an eating experiment and a field survey　　　　　　　　　　　　　　　
  Shen Junyi; Keiko Aoki; Junyi Shen; Tatsuyoshi Saijo
  Working Paper in Experimental Social Sciences, EXPSS-E-8, Osaka University, First page：1, Last page：29, 2008
• Deception and Confession: Experimental Evidence from a Deception Game in Japan
  Keiko Aoki; Kenju Akai; Kenta Onoshiro
  SSRN Electronic Journal, [Reviewed]
  Elsevier {BV}
  DOI：https://doi.org/10.2139/ssrn.1677773
  DOI ID：10.2139/ssrn.1677773, ORCID put code：30527917
• Do Consumers Select Food Products Based on Carbonddioxide Emissions? Evidence from a Buying Experiment in Japan
  Keiko Aoki
  SSRN Electronic Journal, [Reviewed]
  Elsevier {BV}
  DOI：https://doi.org/10.2139/ssrn.1439432
  DOI ID：10.2139/ssrn.1439432, ORCID put code：30527876

• Service Engineering for Gastronomic Sciences: An Interdisciplinary Approach for Food Study　　　　　　　　　　　　　　　
  Takeshi Shimmura; Tomomi Nonaka; Satomi Kunieda; Editors, [Contributor], 8 Consumer Behavior for Information on Food Products
  Springer Nature Singapore Pte Ltd, Jun. 2020
• 低所得労働者の社会的包摂に対する価値の評価と包摂のための社会保障制度設計
  赤井, 研樹; 青木, 恵子
  Oct. 2016
  Japanese, Total pages：77p
  CiNii Books：http://ci.nii.ac.jp/ncid/BB22503119
  CiNii Books ID：BB22503119
• 非自発的孤立・無縁ゼロ社会創成のためのセーフティネット設計
  青木, 恵子; 赤井, 研樹
  2013
  Japanese, Total pages：96p
  CiNii Books：http://ci.nii.ac.jp/ncid/BB12570200
  CiNii Books ID：BB12570200

• 経済学を実験する　　　　　　　　　　　　　　　
  青木恵子
  Nov. 2024, [Invited]
  Japanese, Public discourse
• 経済学を実験する　　　　　　　　　　　　　　　
  青木恵子
  Nov. 2023, [Invited]
  Japanese, Public discourse
• The Effect of Service Provider-Receiver Balance of Profits and Monitoring by Service Associations on Service Providers' Lying Offers: An Economic Experiment with Students　　　　　　　　　　　　　　　
  K. Aoki
  the 8th International Conference on Serviceology, Re-connection & New-connection for Sustainable Growth, Sep. 2023
  English, Oral presentation
• Testing the association between attributes valued for raw egg consumption and personal risk tolerance using a choice experiment　　　　　　　　　　　　　　　
  K. Aoki
  15th Pangborn Sensory Science Symposium, Aug. 2023
  English, Poster presentation

• Apr. 2025 - Present
  Microeconomics with Experiments
• Apr. 2025 - Present
  応用ミクロ経済学
• Apr. 2024 - Present
  １年次プレゼミ
• Apr. 2023 - Present
  演習（２年次以降）
• Dec. 2022 - Present
  Microeconomics, Saitama University
• Apr. 2022 - Present
  経済学入門（ミクロ経済学担当）
• Apr. 2022 - Present
  Experiment and Behaviour Economics, Saitama University
• Apr. 2022 - Present
  Microeconomics, Saitama University
• Apr. 2024 - Mar. 2025
  プレゼミ（再履）
• Apr. 2009 - Mar. 2013
  Experimental Economics, Osaka University

• 福祉型バイオマスタウンのための食農福エネルギー経済循環システム設計　　　　　　　　　　　　　　　
  Apr. 2023 - Mar. 2027
  Grant amount(Total)：4680000, Direct funding：3600000, Indirect funding：1080000
  Grant number：23K01370
• Co-creation for stable security systems to enhance trust among labors　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2021 - 31 Mar. 2025
  Shimane University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  Grant number：21K01461
• A Study of the Interaction between Expectation, Price, and Fundamentals to Understand Bubbles Through Experiments and Surveys　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2021 - 31 Mar. 2025
  Tokoha University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  Grant number：21K01571
• 企業経営者に対する産業事故抑止インセンティブ付与方法の経済実験による検証　　　　　　　　　　　　　　　
  01 Apr. 2020 - 31 Mar. 2023
  Grant amount(Total)：17420000, Direct funding：13400000, Indirect funding：4020000
  Grant number：20H02402
• Design for a sustainable social system employed biomass　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2020 - 31 Mar. 2023
  Kyushu University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  Grant number：20K01681
• 実験社会科学を応用した高血圧予備群抑止のための若者の減塩価値調査と学食介入実験　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2018 - 31 Mar. 2021
  Shimane University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  Grant number：18K09942
• 持続可能な生物多様性農村社会共創のための経済システム設計　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), 01 Apr. 2017 - 31 Mar. 2020
  Kyushu University
  Grant amount(Total)：4550000, Direct funding：3500000, Indirect funding：1050000
  Grant number：17K03679
• 食品の公共財的属性に対する消費者選好の適正な評価手法についての研究　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), 01 Apr. 2016 - 31 Mar. 2019
  University of Tsukuba
  Grant amount(Total)：10920000, Direct funding：8400000, Indirect funding：2520000
  Grant number：16H04985
• Design for a safe and secure social system on foods, agriculture and environment　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), 01 Apr. 2014 - 31 Mar. 2018
  Aoki Keiko, Yokohama National University
  Grant amount(Total)：3770000, Direct funding：2900000, Indirect funding：870000
  This study investigates consumers’ value for biodiversity foods and theoretical model on efforts of consumers and producers because of designing for a safe and secure social system on foods, agriculture and environment. The first task is to measure consumer’s value by employing a choice experiment with experimental economic. The result shows that process information influence that value positively. The second task is to construct the economic model in sequential games about efforts of consumers and producers for preventing endangered animal. The result shows that the equilibrium is to have the efforts of them for it. The third task is to survey such examples at home and abroad. The result shows that peoples’ consciousness about a deal influence to let the system be good.
  Grant number：26780142
• Strategic information transition system on middle-term food safety problem　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Grant-in-Aid for Young Scientists (B), 2011 - 2012
  AOKI Keiko, Osaka University
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  A first purpose “Trust information for consumers” was conducted in a real buying experiment and a hypothetical survey. Both of them were recruited subjects as students and non-students. Subjects selected one of three oranges based on price and the amount of carbon dioxide (CO2) in front of oranges. Since subjects received monetary endowment at each session, they selected an orange under it. The results both the experiment and the survey were shown that high environmental consciousness consumers value oranges with low CO2. Moreover there was not shown a Hypothetical bias such that willingness to pay in hypothetical condition is higher than that in real condition.Second purpose “Theoretical analysis on food safety for producer’s behavior” was constructed under double moral hazard problem. Consumers and producers had an internal effort variable, respectively. According to the models, social function with information provider on safety was constructed also. Based on risk function consisted both effort variables, maximization problems in each player were solved. The theoretical proof was shown the validity of information provider.
  Grant number：23730276
• Strategic information transition's experiment on food safety problem　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity start-up, Grant-in-Aid for Research Activity start-up, 2009 - 2010
  AOKI Keiko, Osaka University
  Grant amount(Total)：2639000, Direct funding：2030000, Indirect funding：609000
  The purpose in the study is to investigate the lying behavior under monetary incentive by using a modified deception game. In the experiment, participants consist of students in the Osaka University and residents around one. In the game, one person in a room and other person in another room interact with each other. The participants can earn more the real money when they tell a lie than when they tell the truth. The results are the followings. The percentage of the lying behavior is about 40% on average. The most percentage of the lying behavior is about 50% when participants are in anonymity condition and the most different payoff between pairs. In the face-to-face condition as compared to anonymity one, liars intend to confess the lying to persons in the pair. The percentage of deceived persons is about 68% among told a lie participants, which they intend to believe the partners even though they are told a lie.
  Grant number：21830059
• 食品の安全性認知の脳内反応の解明と実験経済学を用いた制度設計への応用　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows, Grant-in-Aid for JSPS Fellows, 2007 - 2008
  Osaka University
  Grant amount(Total)：1800000, Direct funding：1800000
  Grant number：07J03647

• 経済学を実験する：実験室からフィールドへ　　　　　　　　　　　　　　　
  Myself, 12 Jan. 2024, [Paper]
• 経済学を実験すること　　　　　　　　　　　　　　　
  Myself, 09 Sep. 2022, [Paper]