MIS Distinguished Speaker Series

Temple University

You are here: Home / Archives for difference-in-differences

difference-in-differences

Feb 10 – Rajiv Garg – “The Price of Losing Trust: An Empirical Analysis of Social Misconduct by YouTube Creators”

By

Time: Friday, 10 February 2023, 10:30–12:00
Room: LW420

Abstract

We study the consequences of reported social misconduct for YouTube creators. Using a staggered difference-in-differences approach, we find that YouTube channels of creators who are found to have misconducted themselves experience significant drops in both subscription and viewership. Such drops translate to economically significant financial losses ranging from $4,734 to $8,233 per month per channel. We find that the effects are similar for channels that feature products and those that do not, and that the effects are more pronounced for channels whose creators can be visually identified. These consequences of social misconduct can be attributed to loss of customer trust, which we show can be partially mitigated by means of credible online apologies.

Bio

Professor Garg’s research uses economic and statistical techniques to analyze information flow in digital platforms and networked structures. More specifically, Professor Garg’s research spans following four broad areas: 1) diffusion of digital content across networks, 2) digital marketing strategies for social and mobile commerce, 3) role of digital technologies in labor markets and entrepreneurship, and 4) identification of business value of data streams generated by digital technologies (blockchain, NFT, IoT, AR/VR, etc.). Professor Garg’s research has appeared in academic journals like Management Science, MIS Quarterly (MISQ), Information Systems Research (ISR), Production and Operations Management (POM), Journal of Management Information Systems (JMIS), and various other journals and peer reviewed conference proceedings. His work has received media coverage in Forbes, Fortune, Austin Statesman, Dallas Morning News, Pittsburgh Post-Gazette, Medium, and more. For his contributions to the field of technology and engineering, Professor Garg was nominated and named a senior member of IEEE.

Apr 8 – Sunil Mithas to present “Mobile Apps, Portfolio Diversification, and Portfolio Performance: Evidence from a Quasi-Experiment in China”

By

Mobile Apps, Portfolio Diversification, and Portfolio Performance:
Evidence from a Quasi-Experiment in China

by

sunil mithas

 

Sunil Mithas

World Class Scholar and Professor
Muma College of Business
University of South Florida

Friday, Apr 8
11:00 am – 12:30 pm
In-person: 1810 Liacouras Walk, Room 420

Abstract:

Mobile apps are among the most important and widely used innovations in the brokerage industry. Surprisingly, despite their increasing economic importance and theoretical significance, few studies have examined the effects of mobile app use on individual investors’ financial decisions and performance. This study seeks to understand how mobile apps influence investors’ trading behaviors through portfolio diversification and portfolio performance in a quasi-experimental setting. We leverage a proprietary longitudinal dataset from a leading securities company, and adopt the staggered difference-in-differences specification as our main identification strategy. The findings suggest that mobile app adoption by retail investors leads to a 3.5% increase in portfolio diversification without deteriorating investors’ portfolio performance. Our exploratory analyses of underlying mechanisms suggest that mobile app adoption is especially beneficial for those who have high time constraints (by reducing transaction friction) and is less useful for those who are likely to be overconfident or who have high trend-chasing tendency (by boosting investors’ biases). Further analyses of adopters’ post-adoption behaviors show that mobile app usage intensity had an Inverted-U relationship with portfolio diversification and performance. In other words, balanced use of both PC and mobile channels permits desirable outcomes in terms of portfolio diversification and portfolio performance. We discuss the implications for research and practice.

Bio:

Sunil Mithas is a World Class Scholar and Professor at the Muma College of Business at the University of South Florida. Mithas has taught at the Robert H. Smith School of Business at the University of Maryland, and has held visiting positions in Australia, Germany and Hong Kong. He earned his PhD from the Ross School of Business at the University of Michigan and an engineering degree from IIT, Roorkee. Identified as an MSI Young Scholar by the Marketing Science Institute, Mithas is among top information systems scholars in the world. He has consulted and conducted research with a range of organizations including A. T. Kearney, Ernst & Young, Johnson & Johnson, the Social Security Administration, and the Tata Group. He is the author of two books, and his research has won best-paper awards, and featured in practice-oriented publications such as MIT Sloan Management Review, Bloomberg, and CIO.com.