Substantive Dimensions of the Deliberations

Forum rules

We encourage contributors to the Discussion Board to publicly identify by registering and logging in prior to posting. However, if you prefer, you may post anonymously (i.e. without having your post be attributed to you) by posting without logging in. Anonymous posts will display only after a delay to allow for administrator review. Contributors agree to the QTD Terms of Use.

To participate, you may either post a contribution to an existing discussion by selecting the thread for that topic (and then click on "Post Reply") or start a new thread by clicking on "New Topic" below.

The transition to Stage 2 of the deliberations is currently underway but will take some time to complete. In the meantime, we very much welcome additional contributions to the existing threads in this forum.

For instructions on how to follow a discussion thread by email, click here.


on the tip of the iceberg

PostThu May 05, 2016 8:52 am

The discussion on the tip of the iceberg metaphor to describe the way we present statistical analysis reminded me of a podcast with Josh Angrist on pre-commitment/pre-analysis and presenting all possible strategies. You find the podcast here: ... grist.html the relevant discussion starts at 18 minutes

Russ Roberts interviews Josh Angrist: Josh’s thoughts on pre-commitment/pre-analysis, especially when it comes to non-experimental work “I have mixed feelings about it, because I don't do a lot of randomized trials and I think the idea of precommitment becomes very difficult in some of the research designs that I use where you really need to see the data before you can decide how to analyze them. You're not sure what's going to work. That said, when you can precommit, that's a wonderful thing, and it produces especially convincing findings. The idea that I should show the world a mapping of all possible models and that that's the key to all good empirical work: I did disagree with that at the time and I still do… So when I talk about RD and I'm using RD, regression discontinuity, methods to estimate the effects of going to an exam school, you know the design there is that I'm comparing people above and below the test score cutoff. And if that design is convincing, it'll satisfy certain criteria, which I then owe my reader. But I certainly don't owe my readers an account of all possible strategies. I really do build it from my proposed design.”

Post Reply

Return to “Substantive Dimensions of the Deliberations”