--- _id: '7630' abstract: - lang: eng text: In this paper, we analyze a credence goods model adjusted to the health care market with regulated prices and heterogeneous experts. Experts are physicians and are assumed to differ in their cost of treating a small problem. We investigate the effects of this heterogeneity on the physicians’ level of fraud and on the patients’ search for second opinions. We find that introducing a fraction of more efficient low-cost physicians always increases social welfare, but in some cases only because of the raised physicians’ surplus. When the low-cost physicians’ cost advantage is small, imposing a share of low-cost physicians does not change the equilibrium fraud level. When the cost advantage is large, however, different changes in the fraud level occur depending on the share of generated low-cost physicians, the search rate and the initial level of fraud. author: - first_name: Joachim Maria Josef full_name: Heinzel, Joachim Maria Josef id: '53445' last_name: Heinzel citation: ama: 'Heinzel JMJ. Credence Goods Markets with Heterogeneous Experts. Vol 118. Paderborn University: CIE Working Paper Series; 2019.' apa: 'Heinzel, J. M. J. (2019). Credence Goods Markets with Heterogeneous Experts (Vol. 118). Paderborn University: CIE Working Paper Series.' bibtex: '@book{Heinzel_2019, place={Paderborn University}, series={CIE Working Paper Series}, title={Credence Goods Markets with Heterogeneous Experts}, volume={118}, publisher={CIE Working Paper Series}, author={Heinzel, Joachim Maria Josef}, year={2019}, collection={CIE Working Paper Series} }' chicago: 'Heinzel, Joachim Maria Josef. Credence Goods Markets with Heterogeneous Experts. Vol. 118. CIE Working Paper Series. Paderborn University: CIE Working Paper Series, 2019.' ieee: 'J. M. J. Heinzel, Credence Goods Markets with Heterogeneous Experts, vol. 118. Paderborn University: CIE Working Paper Series, 2019.' mla: Heinzel, Joachim Maria Josef. Credence Goods Markets with Heterogeneous Experts. Vol. 118, CIE Working Paper Series, 2019. short: J.M.J. Heinzel, Credence Goods Markets with Heterogeneous Experts, CIE Working Paper Series, Paderborn University, 2019. date_created: 2019-02-12T08:18:02Z date_updated: 2022-01-06T07:03:42Z ddc: - '330' department: - _id: '280' - _id: '475' file: - access_level: closed content_type: application/pdf creator: jheinzel date_created: 2019-02-12T08:21:37Z date_updated: 2019-02-12T08:21:37Z file_id: '7631' file_name: WP118.pdf file_size: 286367 relation: main_file success: 1 file_date_updated: 2019-02-12T08:21:37Z has_accepted_license: '1' intvolume: ' 118' jel: - D82 - I11 - L15 keyword: - credence goods - treatment efficiency - heterogeneous experts - overcharging language: - iso: eng place: Paderborn University project: - _id: '1' name: SFB 901 - _id: '2' name: SFB 901 - Project Area A - _id: '7' name: SFB 901 - Subproject A3 publisher: CIE Working Paper Series report_number: 2019-01 series_title: CIE Working Paper Series status: public title: Credence Goods Markets with Heterogeneous Experts type: report user_id: '477' volume: 118 year: '2019' ... --- _id: '8873' abstract: - lang: eng text: We analyze a credence goods market adapted to a health care market with regulated prices, where physicians are heterogeneous regarding their fairness concerns. The opportunistic physicians only consider monetary incentives while the fair physicians, in addition to a monetary payoff, gain an non-monetary utility from being honest towards patients. We investigate how this heterogeneity affects the physicians’ equilibrium level of overcharging and the patients’ search for second opinions (which determines overall welfare). The impact of the heterogeneity on the fraud level is ambiguous and depends on several factors such as the size of the fairness utility, the share of fair physicians, the search level and the initial fraud level. Introducing heterogeneity does not affect the fraud or the search level when the share of fair physicians is small. However, when social welfare is not at its maximum, social welfare always increases if we introduce a sufficiently large share of fair physicians. author: - first_name: Joachim Maria Josef full_name: Heinzel, Joachim Maria Josef id: '53445' last_name: Heinzel citation: ama: 'Heinzel JMJ. Credence Goods Markets with Fair and Opportunistic Experts. Vol 119. Paderborn University: CIE Working Paper Series; 2019.' apa: 'Heinzel, J. M. J. (2019). Credence Goods Markets with Fair and Opportunistic Experts (Vol. 119). Paderborn University: CIE Working Paper Series.' bibtex: '@book{Heinzel_2019, place={Paderborn University}, series={CIE Working Paper Series}, title={Credence Goods Markets with Fair and Opportunistic Experts}, volume={119}, publisher={CIE Working Paper Series}, author={Heinzel, Joachim Maria Josef}, year={2019}, collection={CIE Working Paper Series} }' chicago: 'Heinzel, Joachim Maria Josef. Credence Goods Markets with Fair and Opportunistic Experts. Vol. 119. CIE Working Paper Series. Paderborn University: CIE Working Paper Series, 2019.' ieee: 'J. M. J. Heinzel, Credence Goods Markets with Fair and Opportunistic Experts, vol. 119. Paderborn University: CIE Working Paper Series, 2019.' mla: Heinzel, Joachim Maria Josef. Credence Goods Markets with Fair and Opportunistic Experts. Vol. 119, CIE Working Paper Series, 2019. short: J.M.J. Heinzel, Credence Goods Markets with Fair and Opportunistic Experts, CIE Working Paper Series, Paderborn University, 2019. date_created: 2019-04-11T08:13:53Z date_updated: 2022-01-06T07:04:05Z ddc: - '330' department: - _id: '280' - _id: '475' - _id: '200' file: - access_level: closed content_type: application/pdf creator: jheinzel date_created: 2019-04-11T08:23:33Z date_updated: 2019-04-11T08:23:33Z file_id: '8875' file_name: WP119.pdf file_size: 315297 relation: main_file success: 1 file_date_updated: 2019-04-11T08:23:33Z has_accepted_license: '1' intvolume: ' 119' jel: - D82 - I11 - L15 keyword: - credence goods - heterogeneous experts - fairness - overcharging language: - iso: eng place: Paderborn University project: - _id: '1' name: SFB 901 - _id: '2' name: SFB 901 - Project Area A - _id: '7' name: SFB 901 - Subproject A3 publisher: CIE Working Paper Series series_title: CIE Working Paper Series status: public title: Credence Goods Markets with Fair and Opportunistic Experts type: report user_id: '53445' volume: 119 year: '2019' ... --- _id: '10332' abstract: - lang: eng text: We analyze the incentives for retail bundling and the welfare effects of retail bundling in a decentralized distribution channel with two retailers and two monopolistic manufacturers. One manufacturer exclusively sells his good to one retailer, whereas the other manufacturer sells his good to both retailers. Thus, one retailer is a monopolist for one product but competes with the other retailer in the second product market. The two-product retailer has the option to bundle his goods or to sell them separately. We find that bundling aggravates the double marginalization problem for the bundling retailer. Nevertheless, when the retailers compete in prices, bundling can be more profitable than separate selling for the retailer as bundling softens the retail competition. The ultimate outcome depends on the manufacturers’ marginal costs. Given retail quantity competition, however, bundling is in no case the retailer’s best strategy. Furthermore, we show that profitable bundling reduces consumer and producer surplus in the equilibrium. author: - first_name: Joachim Maria Josef full_name: Heinzel, Joachim Maria Josef id: '53445' last_name: Heinzel citation: ama: 'Heinzel JMJ. Bundling in a Distribution Channel with Retail Competition. Paderborn University: CIE Working Paper Series; 2019.' apa: 'Heinzel, J. M. J. (2019). Bundling in a Distribution Channel with Retail Competition. Paderborn University: CIE Working Paper Series.' bibtex: '@book{Heinzel_2019, place={Paderborn University}, title={Bundling in a Distribution Channel with Retail Competition}, publisher={CIE Working Paper Series}, author={Heinzel, Joachim Maria Josef}, year={2019} }' chicago: 'Heinzel, Joachim Maria Josef. Bundling in a Distribution Channel with Retail Competition. Paderborn University: CIE Working Paper Series, 2019.' ieee: 'J. M. J. Heinzel, Bundling in a Distribution Channel with Retail Competition. Paderborn University: CIE Working Paper Series, 2019.' mla: Heinzel, Joachim Maria Josef. Bundling in a Distribution Channel with Retail Competition. CIE Working Paper Series, 2019. short: J.M.J. Heinzel, Bundling in a Distribution Channel with Retail Competition, CIE Working Paper Series, Paderborn University, 2019. date_created: 2019-06-28T08:42:49Z date_updated: 2022-01-06T06:50:37Z ddc: - '330' department: - _id: '280' - _id: '475' file: - access_level: closed content_type: application/pdf creator: jheinzel date_created: 2019-06-28T08:44:52Z date_updated: 2019-06-28T08:44:52Z file_id: '10333' file_name: WP120.pdf file_size: 375054 relation: main_file success: 1 file_date_updated: 2019-06-28T08:44:52Z has_accepted_license: '1' keyword: - retail bundling - leverage theory - double marginalization language: - iso: eng place: Paderborn University project: - _id: '1' name: SFB 901 - _id: '2' name: SFB 901 - Project Area A - _id: '7' name: SFB 901 - Subproject A3 publisher: CIE Working Paper Series status: public title: Bundling in a Distribution Channel with Retail Competition type: report user_id: '53445' year: '2019' ...