Alex Coppock's avatar

Alex Coppock

@aecoppock.bsky.social

1286 followers 1101 following 229 posts

Associate Professor (on term) of Political Science at Yale University
alexandercoppock.com
Persuasion in Parallel: alexandercoppock.com/coppock_2023.html
Research Design: Declaration, Diagnosis, and Redesign: book.declaredesign.org

Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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ARGHHH it's so frustrating. And there's a better way, too! We even wrote a follow-up on the Trump indictments specifically to try to make it even easier to avoid using change questions:

alexandercoppock.com/barari_etal_...

(forthcoming at POQ!)

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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This post resonates with my view that all we ever really learn about is the ITT and we should be grateful we ever even learn about the ITT in the first place

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Tim Gill has moved on from trolling academics to trolling... Phish?

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Thank you Eric, thank you Margit and Josh for this huge honor. I'm grateful to the committee and to everyone who helped me make PiP - esp. those whose work I replicated or reanalyzed. See you in Philly for APSA2024 -- here's a throwback to APSA2023 for the author-meets-critics alternative for PiP

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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That would be awesome, thank you!!

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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+1 to the main takeaway from this post that pilots are great for reasoning about your eventual standard error, less great for learning about the treatment effect.

Complements this chapter nicely: book.declaredesign.org/lifecycle/pl...

And I couldn't resist rewriting these loops in DeclareDesign:

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Reposted by Alex Coppock

Peter Licari's avatar Peter Licari @peterlicari.bsky.social
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Make me king for a day and I swear to all that is holy, I'll require that anyone attempting to field a "support more/support as much/support less" question will be required to spend fifteen goddamn minutes googling "response substitution." Such a huge whiff.

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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When I'm doing meta-analysis work, I ask a lot of people for their replication datasets. Good news is that norms appear to have really shifted -- for one project: 2 "let me get back to you" 2 "data unavailable" 8 data shared 4 left on read 50% is progress! {please post your data, TY!}

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Raphael Cunha's avatar Raphael Cunha @raphaelcunha.bsky.social
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"... people are not good at articulating the reasons for their choices. So they may say – and honestly feel! – that an issue is important. But when they say that, they are not revealing that this issue will affect how they vote."

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Not to be glib -- I 100% agree that academic incentives push scholars away from correcting others' work -- but I do think @steveharoz.com's efforts here could legitimately be a CV line under "disciplinary service"

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Here's a nice new paper from the fully blueskyless author team of Philip Moniz, Rodrigo Ramirez-Perez, Erin Hartman, and Stephen Jessee, showing that survey exp. effects are similar for "eager" and "reluctant" respondents, with positive implications for generalizability

doi.org/10.1017/pan....

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Reposted by Alex Coppock

Reposted by Alex Coppock

Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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"Destination: Various Classrooms" should be the title of the Michelson biopic

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Q is such a missed opportunity!

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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I missed this piece last month -- political science experimentalists especially should give it a read!

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Those editor comments are crazy bad! Obvi, the false positive rate (fraction of experiments that are significant, conditional on the null being true) is controlled by alpha and does not go *up* when sample sizes increase. 🙄

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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yes! a good template is something like using [research design] we find that the average effect of [treatment] on [outcome] is [estimate]([std.error])

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Devon Cantwell-Chavez's avatar Devon Cantwell-Chavez @devoncantwell.bsky.social
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The childcare reimbursement form for @APSAtweets 2024 conference in Philly is now open! It is due by August 2nd. It covers $500 of expenses, which can include a Philly based provider OR travel costs for a non-guardian caregiver connect.apsanet.org/apsa2024/chi...

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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do it! "is associated with" isn't a get our of jail free card and "these findings are descriptive" isn't a legitimate dodge and "while not causal, these findings are suggestive" is just innuendo

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Julia M. Rohrer's avatar Julia M. Rohrer @dingdingpeng.the100.ci
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I’m also coming down more and more on the side of “no, causal over-claiming cannot be blamed on journalists.” Sometimes, they may be the source of misinterpretations. But often, the articles themselves are carefully crafted to imply causality while maintaining plausible deniability.

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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We thank the commenter for their kind words: "This is actually very timely advice." In the revised draft, we are sure to insist on \textit{timeliness} as an important feature of unsolicited advice (p. 12).

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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unsolicited advice: do not group reviewer comments together then provide a summary response -- go through each reviewer's points point-by-point. Otherwise it's too easy to mischaracterize what a reviewer was getting at or worse, to skip responding to some comments altogether.

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Reposted by Alex Coppock

Alice Malmberg 's avatar Alice Malmberg @alicemalmberg.bsky.social
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So excited this is finally out and that a UCD colleague and I could contribute!

For anyone interested, here is a link to our replication’s discussion paper, published last June:

ideas.repec.org/p/zbw/i4rdps...

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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oof, hell yeah -- was looking for my soundtrack, this is it

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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for sure :) I'm just grumpy -- why present a mediation analysis at all when there's simply no design-based reason to think it's correct. We already thought it was a possibility before doing any data analysis, so this isn't even "suggestive"

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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would like to also include author's caveat that the mediation analysis could be wrong

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Browsing Josh Knobe's website to discover a section on responses to his work... Don't believe I've seen a political scientist's website do anything like this! @xphilosopher.bsky.social

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Josh Chin's avatar Josh Chin @joshchin.bsky.social
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Hi Folks: Firing up this account for the first time to note that today marks one year since the Russian government detained my colleague Evan Gershkovic in an act of supreme cynicism and cowardice. WSJ’s response is this stunning front page. #FreeEvan

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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oh man. NA, NA, NA, NA, NA, NA, NA

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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ooh that's interesting maybe if you don't know the show its just "that doofus"

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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yes, the negative correlation with subject partisanship really shows up for her... funny how it's there even for those who don't know the show!

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Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Furiously making appendix figures for #MPSA2024 over here.

...for a study with @ethanvporter.bsky.social and Don Green, we did a warmup exercise in which we asked subjects to guess the partisanship of characters from The Office.

could not resisting posting

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Reposted by Alex Coppock

Kim Weeden's avatar Kim Weeden @weedenkim.bsky.social
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The econ paper that found a 42-64% increase in rapes after prostitution banned (in Sweden)? Turns out result from coding error + Stata prioritization rues + seasonality.

* always plot raw data
* always sniff test your estimates
* open science works!

On X or here:
drive.google.com/file/d/1oGP3...

3 replies 63 reposts 178 likes

Alex Coppock's avatar Alex Coppock @aecoppock.bsky.social
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Would love thoughts from survey researchers and REP scholars about the measurement properties of this new question. To my mind it addresses the persistent MENA mismeasurement and has consistent race/ethnicity then national origin structure across groups Should we update AmPol surveys to this Q?

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