Testing the validity of the Diff-in-Diff design when treatment timing varies (done rigorously)

Sharing a very interesting new paper on DiD methods when used with heterogeneous treatment effects: Andrew Goodman-Bacon, 2018. Differences-in-Differences with Variation in Treatment Timing, Working Paper. The paper shows how (and when) a DiD estimator can be decomposed as a weighted average of 4 simple and intuitive "2x2" average causal effects. Some of these effects may …

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Newly edited volume on crowdfunding

Cumming, Douglas, and Lars Hornuf, eds. The Economics of Crowdfunding: Startups, Portals and Investor Behavior. Palgrave Macmillan, 2018.   I also found the recent works of Venkat Kuppuswamy highly relevant and interesting such as: Kuppuswamy, Venkat and Bayus, Barry L., (2018) "Crowdfunding Creative Ideas: The Dynamics of Project Backers in Kickstarter" in The Economics of Crowdfunding: Startups, …

5th Annual World Open Innovation Conference – Dec 13-14, 2018 @SF

The 5th Annual World Open Innovation Conference is taking place in San Francisco on Dec. 13-14, 2018.  Save the date and mark your calendar.  This unique event combines the latest in Open Innovation research with the open innovation practices of some of the world’s leading companies.  And it's a fun group too! This year’s conference theme, “Digital Transformation for Sustainability”, connects …

Understanding emerging business models in MOOCs

Using a panel dataset of 35 MOOC platforms composed of roughly 6,000 MOOCs and 1,000 educational partners during 2012-2016, the following work studies business model innovation dynamics in the MOOCs evolution space. Rothe, Täuscher and Basole (ECIS 2018), Competition between platform ecosystems: a longitudinal study of MOOC platforms Platforms with an initial ecosystem advantage (such …

MSOM Conference 2018 – UT Dallas

I am looking forward to attend the MSOM 2018 Conference this weekend hosted by Naveen Jindal School of Management of the University of Texas at Dallas. The conference has a very detailed booklet with the conference schedule and lots of practical tips. Here are the papers to be presented at the Special Interest Groups and …

Participants ≠ Population in on-demand services, and an example from architecture

In a recent co-authored paper, we conceptually and technically characterize the simple idea that the participants in every on-demand crowdsourcing setting have a choice to participate and they only compete with the rest agents who also choose to participate (as opposed to the whole population). Since participation is a decision of the players themselves who …

Create a blog for your audience today – a step-by-step guide

I always wanted to have a blog and write down and discuss research ideas, but never had the time to learn how to do it. Building a proper and focused blog can be challenging but over time hopefully one should get better at it. Several friends asked me how they could create their own blogs …