{ "133776-21873548": { "datetime_modified":"20250327T105216", "datetime_start":"20250404T100000", "datetime_end":"20250404T112000", "has_end_time":1, "date_start":"2025-04-04", "date_end":"2025-04-04", "time_start":"10:00:00", "time_end":"11:20:00", "time_zone":"America\/Detroit", "event_title":"Vertical Integration and Consumer Choice: Evidence from a Field Experiment", "occurrence_title":"", "combined_title":"Vertical Integration and Consumer Choice: Evidence from a Field Experiment: Alexander MacKay, University of Virginia", "event_subtitle":"Alexander MacKay, University of Virginia", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Platforms, retailers, and other firms often offer their own products alongside products sold by competitors, but this form of vertical integration has become a target of regulation in digital markets. We study the effects of this practice through a field experiment that hides brands owned by Amazon (i.e., private labels) from shoppers on Amazon.com. We first consider the effects of this removal on three aspects of consumer behavior: substitution to other products, changes in search effort, and substitution to other retail websites. In the absence of Amazon brands, our results indicate that consumers substitute toward products that are similar along most observable dimensions. We find no evidence that treated consumers change their search effort, nor that they shift their shopping behavior to other retail websites. To evaluate a fourth mechanism\u2014how the presence of Amazon brands affects equilibrium prices\u2014we estimate a structural model of demand and simulate counterfactual prices when removing such products. Our estimates imply that, for the categories we study, removing Amazon brands would reduce consumer surplus by 3.8 percent in the short run, and roughly one quarter of the impact is due to equilibrium price increases by other products. The effects are heterogeneous, with consumer surplus reductions exceeding 10 percent in some categories, while other categories realize no change or even positive increases in consumer surplus when Amazon brands are removed.", "occurrence_notes":null, "guid":"133776-21873548@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/133776", "building_id":"1000154", "building_name":"Lorch Hall", "campus_maps_id":"88", "room":"301", "location_name":"Lorch Hall", "has_livestream":0, "cost":"", "tags":["seminar","Economics","Industrial Organization"], "website":"http:\/\/www.lsa.umich.edu\/econ", "sponsors":[ { "group_name":"Department of Economics", "group_id":"3302", "website":"http:\/\/www.lsa.umich.edu\/econ" }, { "group_name":"Applied Microeconomics\/Industrial Organization", "group_id":"3545", "website":"" }, { "group_name":"Department of Economics Seminars", "group_id":"3566", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2025\/03\/event_133776_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/03\/event_133776_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21873548 } , "130232-21865621": { "datetime_modified":"20250317T124457", "datetime_start":"20250404T110000", "datetime_end":"20250404T123000", "has_end_time":1, "date_start":"2025-04-04", "date_end":"2025-04-04", "time_start":"11:00:00", "time_end":"12:30:00", "time_zone":"America\/Detroit", "event_title":"Banned, Bold, and Brave in Detroit", "occurrence_title":"", "combined_title":"Banned, Bold, and Brave in Detroit: Leah Johnson", "event_subtitle":"Leah Johnson", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Leah Johnson, author of YA novels and owner of Loudmouth Books bookstore, will speak to young adult readers about the freedom that the act of reading brings. Attendess will have the chance to stroll through the beautiful grounds of the parkway and dive into the important and timely topic of access to books through a banned book pop-up installation. Johnson will share her insights and experiences, sparking meaningful conversations about the reasons behind the banning of these books and their relevance in today's world.\r\n\r\nEach attendee will receive a free book and a beautifully customized bookmark. This isn't just any bookmark\u2014it's a keepsake that reflects the themes and messages of the day, perfect for holding your place in a new favorite read.\r\n\r\nRegister and let us know you're coming! https:\/\/www.eventcreate.com\/e\/you-should-see-me-in-a-crown", "occurrence_notes":null, "guid":"130232-21865621@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/130232", "building_id":"null", "building_name":"Off Campus Location", "campus_maps_id":"1", "room":"", "location_name":"Joe Louis Greenway, 8034 W. Warren Ave., Detroit, MI 48210", "has_livestream":0, "cost":"", "tags":["Humanities","Writing","Books","African American","Detroit"], "website":"https:\/\/www.instagram.com\/umichhumanities\/", "sponsors":[ { "group_name":"Institute for the Humanities", "group_id":"1130", "website":"http:\/\/www.lsa.umich.edu\/humanities" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2024\/12\/event_130232_original-1.jpeg" }, "occurrence_count":1, "first_occurrence":21865621 } , "128899-21861873": { "datetime_modified":"20250303T063128", "datetime_start":"20250404T110000", "datetime_end":"20250404T120000", "has_end_time":1, "date_start":"2025-04-04", "date_end":"2025-04-04", "time_start":"11:00:00", "time_end":"12:00:00", "time_zone":"America\/Detroit", "event_title":"CIC Student Working Group Meeting", "occurrence_title":"", "combined_title":"CIC Student Working Group Meeting", "event_subtitle":"", "event_type":"Careers \/ Jobs", "event_type_id":"2", "description":"The CIC invites students of all academic backgrounds and varying research experience to join the CIC Student Working Group. Students around the world will join a community of young professionals and researchers interested in the future of COVID-19 and ongoing pandemic research.Learn more about the Working Group and register to attend by visiting our website: https:\/\/covidinfocommons.datascience.columbia.edu\/content\/student-working-group", "occurrence_notes":null, "guid":"128899-21861873@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/128899", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"", "has_livestream":0, "cost":"", "tags":[], "website":"", "sponsors":[ { "group_name":"University Career Center UCC", "group_id":"1140", "website":"http:\/\/careercenter.umich.edu" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21861873 } }