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DTSTART:19960101T000000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260428T190626Z DTSTART;VALUE=DATE-TIME:20260304T130000 DTEND;VALUE=DATE-TIME:20260304T140000 SUMMARY:AMES (Applied Microeconomics Early Stage) Workshop - Anwesh Mukho padhyay & Yanjun Gao (PGRs) TZID:Europe/London UID:20260304-8ac672c79c03da45019c0949329a1553@warwick.ac.uk CREATED:20260302T085947Z DESCRIPTION:There will be two x 30 minutes presentations: i) Anwesh will be presenting Media Bias and Information Bubbles: Evidence from Reportin g of Pre-Election Polls on YouTube Abstract: A large share of the econom ics literature on media bias focuses on framing or slant\, rather than i nformation selection. At the same time\, growing concerns about informat ion bubbles and the “polarisation of reality”\, particularly in the US w here media markets have strong partisan sorting\, suggest that agenda se tting may play an equally important role. I study the existence of such information gaps in the context of pre-election polling\, where the unde rlying information is verifiable\, but media outlets remain free to choo se which polls to report. I construct novel data on poll reporting on Yo uTube\, one of the most widely used news platforms in the United States. Using transcripts from 94 YouTube channels covering U.S. news and polit ics\, together with an LLM-based extraction filter\, I build a structure d dataset of all polling-related information reported in each video. I d ocument three main findings. First\, at any given point in time\, Republ ican-leaning channels report more information on polls where Trump is ah ead relative to Democratic-leaning channels\, establishing the presence of information bubbles even in a setting with hard\, publicly verifiable information. Second\, I find that reporting favourable information for the channel's preferred candidate generates noisy but generally positive effects on viewership. Third\, I find that conditional on reporting abo ut polls\, these information bubbles are relatively more driven by the i ntensive margin -- channels selectively sampling from different ends of the distribution\, than mechanically through the amount of information i n each video. ii) Yanjun will be presenting From Calories to Calcium: Re duced-Form and Structural Evidence on Soda–Milk Substitution from U.S. S canner Data Abstract: This paper examines the substitution patterns betw een milk and soda\, with particular attention to demographic heterogenei ty. Using the Nielsen Retail Scanner dataset\, I estimate demand paramet ers through a novel share-to-share regression framework. The results ind icate that while soda and milk appear nearly independent at the store le vel\, they behave as strong substitutes at more aggregated market levels . Flavored milk\, in particular\, emerges as a close substitute for soda \, consistent with its stronger appeal among younger consumers. I then a dopt a structural approach by estimating a multinomial logit demand mode l using household-level scanner data. This demand model allows for riche r individual heterogeneity\, and the resulting structural estimates clos ely mirror the reduced-form findings. Taken together\, these findings su ggest that milk and soda are strong substitutes\, especially flavored mi lk and particularly among households with children. Finally\, I conduct a back-of-the-envelope policy simulation to evaluate how a one-cent-per- ounce sugary drink tax would affect the market shares of milk and soda\, and how these effects differ across demographic groups. The results pro vide new insights into the evaluation of sugar tax policies LOCATION:S2.79 CATEGORIES:CAGE-AMES Workshop LAST-MODIFIED:20260302T085947Z ORGANIZER;CN=Gill Gudger: END:VEVENT END:VCALENDAR