Nick Hagerty @hagertynw Twitter profile | Pikagi

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Nick Hagerty

@hagertynw

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Environmental & resource economist, assistant professor at @MontanaState . Water, climate adaptation, agriculture, land use, international development

Bozeman, MT

https://t.co/KsZCmgWkvI

Joined July 2015

Don't wanna be here? Send us removal request.

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@hagertynw

Nick Hagerty

1 year

The Sustainable Groundwater Management Act of 2014 (SGMA) often seems like THE biggest story in California agriculture. It must be affecting ag decisions already, right? @ellenm_bruno and I did a deep dive... and our best answer seems to be no A long🧵on what we found and why

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@hagertynw

Nick Hagerty

2 years

Here are the full materials for my data-science-in-economics course, for anyone who might benefit The idea is to explicitly teach skills/tools that otherwise are only gained through RA experiences. Help level the playing field for research/PhDs/predocs

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GitHub - msu-econ-data-analytics/course-materials

Contribute to msu-econ-data-analytics/course-materials development by creating an account on GitHub.

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@hagertynw

Nick Hagerty

5 years

So tomorrow I was supposed to give a talk about whether California has been adapting to climate change But now it's canceled -- precisely because PG&E has failed to adapt to climate change ...revealing my master plan all along!!! Performance art as economics

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Nick Hagerty

5 years

I gave a talk recently to the first-year PhD students, reflecting on my grad school experience. Basically what would I want to go back and tell myself? Posting the slides here, in case they're at all helpful to others:

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Nick Hagerty

2 years

2 useful papers today on how you can get basically any answer you want from regressions using arcsinh(y) or log(y+1) I made these graphs to show the problem: The mean of the transformed var (black lines) varies like crazy by what units you choose for y 🧵 on my own take-aways

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Nick Hagerty

10 months

Reminder: Using log(x+1) or arcsinh(x) is never coherent, and you probably want Poisson regression instead This paper changed what I do and teach, and it's the rare econometrics paper that's actually clear and accessible. All applied social science researchers should read it!

@QJEHarvard

QJE

10 months

Recently accepted by #QJE , “Logs with Zeros? Some Problems and Solutions,” by Chen ( @jiafengkevinc ) and Roth ( @jondr44 ):

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Nick Hagerty

5 years

To me, Esther and Abhijit's greatest impact has been to normalize intellectual humility -- the idea that even the "experts" often have no clue what the answer is, and it's OK for them to admit that. (thread)

@MIT

Massachusetts Institute of Technology (MIT)

5 years

MIT News: Professors Esther Duflo and Abhijit Banerjee share the #NobelPrize in economics with Michael Kremer of Harvard, are cited for breakthrough antipoverty work.

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Nick Hagerty

3 years

A couple things from my econ data analytics course that might be helpful to someone: * Exploratory Analysis slides * Data Cleaning Checklist I'll eventually post everything but am mostly using existing materials - these are the most original parts so far

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Nick Hagerty

2 years

A methods fallacy I've seen more than once recently: IV does not "let you see" how much of the effect of one variable (Z) on an outcome (Y) operates through a particular channel (X) Instead it ASSUMES that ALL of the effect of Z on Y operates through X and proceeds accordingly

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Nick Hagerty

3 years

Excited to develop an all-new course on data analytics for our econ master's students for the fall. I'd love to see tutorials/notes/other resources you've found useful - please share! Aim is in-between PhD-level "data science for economists" and undergrad "statistical computing"

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Nick Hagerty

5 years

I'm excited to share that, barring societal collapse over the next few months, I'll be joining the awesome ag econ & econ faculty at Montana State Looking forward to getting to know @montanastate students, environmental/ag issues in MT, and the trails around Bozeman. Come visit!

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Nick Hagerty

6 months

So many research ideas! Thanks @USCBO

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Nick Hagerty

2 years

Excited to finally share a fully documented & updated version of my California Surface Water Data! It gives volumes of deliveries, diversions, and allocations of surface water for all wholesale users in CA, by sector and year, for 1993-2021

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GitHub - hagertynw/data-surface-water: California surface water quantity data

California surface water quantity data. Contribute to hagertynw/data-surface-water development by creating an account on GitHub.

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Nick Hagerty

3 years

We have the same great deal for an MS in Applied Economics here at Montana State (fully funded, with limited exceptions). Are there other fully-funded master's degrees in econ/applied econ out there?

@michelson_hope

Hope Michelson

@michelson_hope

3 years

🚨🚨 Semi-annual psa: Instead of a pre-doc, apply for a MS in ag/applied econ next year!! At Illinois, our applied econ MS is fully funded - two years of classes and close mentoring with professors developing your own research. Finish with a thesis, a grad degree, and no debt.

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@hagertynw

Nick Hagerty

5 years

🚨Job Market Paper🚨 Can we adapt to environmental change? How important is surface water to the economy? I make progress on these questions in "The Scope for Climate Adaptation: Evidence from Water Scarcity in Irrigated Agriculture" Paper: [THREAD]

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Nick Hagerty

4 years

@Noahpinion Noah, as someone working on climate economics and related topics, I think most of your critiques were spot on -- in the past. Good thing we're already working hard on all 7 of your suggested steps, and have been for a few years now!

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Nick Hagerty

3 years

Good article summarizing one of the greatest achievements of modern empirical economics: a huge body of evidence on the horrific health effects of air pollution. Not obvious from casual observation; not possible to learn w/o big admin datasets + careful thinking about causality.

@dwallacewells

David Wallace-Wells

3 years

Air pollution kills an estimated ten million people each year. But it does much more than that, too. A long thread on what it means that more than 90 percent of the world's population is breathing dangerously polluted air. (1/x)

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Nick Hagerty

11 months

Did your student's grandmother really die? A back of the envelope calculation Assumptions: # of living GPs: 2-3 Age of GPs: 70-80 Annual Pr(death): 2-5% (CDC) Term = 1/3 year Each student's prob of at least 1 GP death during the term: 1-(1-.02/3)^2 to 1-(1-.05/3)^3 = 1-5%

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Nick Hagerty

6 months

Ok econ twitter: How do you find & choose coauthors? I'm curious how others approach it. Intentional or serendipitous? Start w/ the idea or the people? How do you tell if you'll work well together? Look for specific skillsets you're weaker at, or thought partners for everything?

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Nick Hagerty

2 years

(I think economists could benefit generally from thinking more about units! In physics EVERYTHING is about unit analysis, which gave me helpful intuition) (I've been trying to tell people about this problem for years, though I've used the arcsinh too so I'm totally a hypocrite)

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@hagertynw

Nick Hagerty

3 years

We're hiring a full-time RA/predoc in economics! Come work with @carly_urban , Justin Gallagher, and me at Montana State University We'd like to fill this quickly so please apply soon / share with anyone who might be looking for a next step @econ_ra

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Nick Hagerty

4 years

Looking again at my notes from NBER. I really liked this point in @mikejrob 's discussion: "Agriculture is a huge share of consumer surplus." Sometimes hard to articulate why others should care about ag when it's only 1% of GDP, but it's the 1% we literally couldn't live without

@mikejrob

Michael Roberts

4 years

Really gratified to see all the ag papers at NBER SI EEE, all from the angle of irrigation water. This classicly difficult topic is finally getting some modern data analysis. Water was so niche just a few years ago, and now all the cool kids are doing it.

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Nick Hagerty

4 years

👇👇👇 Often people say the econ job market is "noisy", as if its REAL purpose is external validation, to render the ultimate judgment of your abilities. But: (a) that's wrong, the purpose is to get a job 1/5

@ash_craig

Ashley Craig 🇺🇦

4 years

𝐉𝐌𝐂𝐬: 1. Many factors affect your JM outcome beyond the quality of work → you cannot infer much re: its quality from outcomes 2. It says even less about your ability as a researcher 3. It says NOTHING about your value as a person 4. 1-3 more true this year than ever

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Nick Hagerty

4 years

@economeager so much advice seems premised on the idea that people are complacent about external standards and need to be scared into working harder, when almost all of us have the exact opposite problem

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Nick Hagerty

4 years

Very cool paper by job market candidate @yuanning_liang showing that trucks crash *more* after getting inspected. One of the clearest event study figures I've seen She suggests less likely re-inspection => less safe driving. Implies randomized inspections could reduce crashes

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Nick Hagerty

6 years

This is amazing -- go Minneapolis!

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Nick Hagerty

5 years

All 3 winners set good examples that more people in econ could learn from. Esther is generous with time and credit, Abhijit is constantly self-effacing, Michael Kremer ALWAYS offers a constructive suggestion when raising a concern to a seminar speaker (be like Michael Kremer!)

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Nick Hagerty

2 years

All the time, in reporting and public discussion, I see issues around climate adaptation framed in terms of, "How will we do X?" How will we move to higher ground? How will we reduce water demand? How will we decarbonize? How will we feed the world? It's the wrong question.

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Nick Hagerty

5 years

Esther especially has invested like crazy in building institutions and in education, from highly dedicated PhD advising to civil service training in India and online courses that reach thousands. It's not about her; she's making sure she herself ultimately becomes unnecessary.

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@hagertynw

Nick Hagerty

2 years

Essentially: The 1 in log(y+1) is arbitrary (why not 10? 0.1? 0.0001?), and the arcsinh formula contains a similar hidden parameter So they're sensitive to scaling, which isn't great because our answers should be the same whether we work with $, hundreds of $, millions, etc.

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@hagertynw

Nick Hagerty

8 months

Academics: Please stop announcing who your department has hired as faculty or accepted to a PhD. You are stealing their thunder! It's a far bigger deal to them than to you! Plus they might not be ready to publicly share their employment status. At least ask their permission first

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Nick Hagerty

2 years

@johnwhitehead81 Maybe we all could be less judgmental of minor stylistic choices and quit generalizing from own preferences to prescriptive mandates for everyone else

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Nick Hagerty

1 year

This is a situation we can help with at Montana State! Send us your students who could use a little more exposure to rigorous econ and math before applying to PhDs. Most students in our Applied Econ master's program are fully funded.

@AntiPraxxer

Sweet Baby Ray’s applier

1 year

Consequently, and because I found economics late, by the time I figured out I wanted to go to grad school and professors told me how much math was needed, there was almost no time to take the math. I remember sitting in a profs office feeling so dejected when I learned this 5/13

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Nick Hagerty

2 years

Chen & Roth show that a "percentage" average treatment effect is *just not a well-defined estimand* when your outcome values can include 0. I find this tremendously disappointing!! 😥 Though it seems obvious in retrospect, I think I'd been holding out hope for a way to get it

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Nick Hagerty

6 months

Going to read more carefully but this seems like the key. Most climate damages happen through channels other than local temperatures. Climate science has said this forever, yet most of the econ impacts lit ignores it. Global temps capture more of that broader climate system

@drkaenzig

Diego Känzig

6 months

𝗠𝗲𝗰𝗵𝗮𝗻𝗶𝘀𝗺: Global temperature shocks predict strong rise in damaging extreme events. From Deschênes-Greenstone 2011; Hsiang-Jina 2014 we know that such events are associated with substantial economic damages. The impact of local shocks on extreme events is much weaker

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@hagertynw

Nick Hagerty

5 years

New paper describing Raj Chetty's exciting alt intro econ course: Basic ideas could be adopted widely: * Motivate theory with real-world questions, not vice versa * Treat econ as an ongoing empirical science * Labs/projects engage & show what we really do

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Expanding and Diversifying the Pool of Undergraduates who Study Economics: Insights from a New...

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@hagertynw

Nick Hagerty

2 years

No need for ceiling TVs at the dentist in Montana... better entertainment is available right outside the window

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Nick Hagerty

2 years

My coauthor @_AnshumanTiwari unearthed this (non-exhaustive) list I wrote up early in grad school of "big" questions at the intersection of environmental and development economics We've def made progress but there's clearly much more to learn. Interested in others' reflections

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@hagertynw

Nick Hagerty

4 years

At last! My choice of academic research topic has paid off and finally made me a cool kid

@mikejrob

Michael Roberts

4 years

Really gratified to see all the ag papers at NBER SI EEE, all from the angle of irrigation water. This classicly difficult topic is finally getting some modern data analysis. Water was so niche just a few years ago, and now all the cool kids are doing it.

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Nick Hagerty

2 years

Last week @Interior announced a new program to pay for water conservation in the Southwest. But the plans don't look aggressive enough. To save Lake Mead and avoid painful water cuts, @bryleonard and I call for Interior to conduct a reverse auction

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Interior’s plan won’t solve the Colorado River crisis. Here’s what will. - High Country News

What if farmers competed with one another to cut water consumption?

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@hagertynw

Nick Hagerty

11 months

I'm worried the algorithm is leading people to miss the point (since the first tweet has 14x the views of the others) It's truly very common for college students to lose elderly relatives!!! Most students who claim this are likely telling the truth

@hagertynw

Nick Hagerty

11 months

Did your student's grandmother really die? A back of the envelope calculation Assumptions: # of living GPs: 2-3 Age of GPs: 70-80 Annual Pr(death): 2-5% (CDC) Term = 1/3 year Each student's prob of at least 1 GP death during the term: 1-(1-.02/3)^2 to 1-(1-.05/3)^3 = 1-5%

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Nick Hagerty

11 months

It has come to my attention that this would not be a good joke to share with econ classes because it is based on an event that happened when college students were... 4

@besttrousers

Matt Darling 🌐🏗️

11 months

I’mma let you finish, but Jerome Powell had one of the softest landings of all time! One of the softest landings of all time!

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Nick Hagerty

5 years

In earlier econ culture, certain great men held special wisdom that was inaccessible to others without their help. Esther and Abhijit (+ plenty of others) not only pulled back this curtain but also showed everyone ways to start figuring out what we CAN know (however narrowly).

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Nick Hagerty

4 years

@Noahpinion The main things I think you have wrong: 1. The point about bad research is outdated -- we haven't had stuff like that published in the last decade 2. Climate economists exist, publish a lot, and have non-oversimplified policy ideas -- they just have less prominence & influence

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@hagertynw

Nick Hagerty

3 years

All of these chapters look great, but I want to draw attention to "Chapter 83 - Machine learning in agricultural economics" by Baylis, Heckelai, and Storm. Exhaustive, up-to-date list & discussion of ML applications in enviro, ag, devo, related fields

@cbb2cornell

Chris Barrett

3 years

The Handbook of Agricultural Economics, vol. 5, is now published! An absolute all-star roster of authors span 10 chapters and >800 pages defining current key research frontiers in the field. And look for volume 6 in summer 2022 (chapters now in review).

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Nick Hagerty

5 years

Ok I am nearly 12 months late to this game but I just saw @MeeraMahadevan present this paper at @emLabUCSB and it is so cool. It's a whole detective story disguised as an econ paper. Gripping, with a super clever and tenacious protagonist/author. Read it if you haven't!

@MeeraMahadevan

Meera Mahadevan

@MeeraMahadevan

6 years

Check out this blog post on my job market paper about political corruption in the Indian electricity sector, and its welfare implications! Thanks @DaveEvansPhD , @dmckenzie001 , @BerkOzler12 , & others at @wb_research for this awesome way for more people to access job market papers!

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Nick Hagerty

4 years

I will join the chorus in asking all economists, especially those more senior than me, to read this, reflect, and commit to change

@Claudia_Sahm

Claudia Sahm

4 years

my new #macromom post: *Economics is a disgrace*

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Nick Hagerty

2 years

Here are the papers: One by @jondr44 and @jiafengkevinc

@pedrohcgs

Pedro H. C. Sant'Anna

2 years

Twitter is fun because we can promote the work of friends and people we admire! Today I want to call your attention to a brand new paper by @jondr44 and @jiafengkevinc , available at: What is the gist? Check the abstract!

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Nick Hagerty

5 months

Going to AERE? Don't miss the first results from my RCT with @ariel_zucker We offered smallholder farmers in Gujarat, India payments to voluntarily reduce their groundwater pumping. Did it work? Come see! Flagging esp. for development folks since it's a general water session

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@hagertynw

Nick Hagerty

2 years

With 1 instrument and 1 endogenous variable, IV is analogous to the Chain Rule You think Z causally affects both X and Y, but also X is a necessary stopover on the way to Y So dividing by the first stage lets you express the effect on Y in "units" of X

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@hagertynw

Nick Hagerty

5 years

* Be aware how fast the research frontier moves. Field courses from 2nd year will be somewhat obsolete by the time you graduate

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@hagertynw

Nick Hagerty

5 months

I have thought about this every day since seeing it. Suddenly I like CDFs. Probably going to have to start teaching this

@SandroAmbuehl

Sandro Ambuehl

5 months

People sometimes find CDFs unintuitive. Here's how to understand them intuitively. A CDF is just magnitudes plotted over ranks.

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Nick Hagerty

5 years

I was lucky to take Marty Weitzman's grad course, with only 3 students enrolled. One day both @ToddGerarden and @JesseJenkins were absent, so Marty says, "It doesn't seem right to lecture; do you have any questions?" I still wish I'd been better prepared for that opportunity!

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Nick Hagerty

5 years

A few highlights: * A growth mindset is both helpful and true. Smartness and talent are not fixed; your research skills will improve with practice

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@hagertynw

Nick Hagerty

1 year

The @nytimes has a big article today on groundwater depletion across the US, it's a nice summary with some cool data collection Thread on 3 important points of context that I thought didn't quite come through in the article

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Nick Hagerty

11 months

(Maybe it's worth giving students the benefit of the doubt)

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Nick Hagerty

2 years

Love to see a measure of Vulture Suitability in an econ paper. Of course only @Eyal_Frank could be responsible But seriously loss of wildlife & biodiversity is a big deal and can have massive human consequences, as this article explains

@vox_dev

VoxDev

2 years

Today we released our first column of 2023, featuring research by @Eyal_Frank & @anantsudarshan : One particularly striking fact is that approximately 100,000 extra deaths per year can be attributed to collapsing #vulture populations in #India . 🧵(1/6)

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Nick Hagerty

4 years

Leah and Matto's case against carbon pricing is much more sophisticated than usually seen Not sure where I come down, but I do think economists should take their arguments seriously Here's a 🧵 on a couple key points, and an analogy about why hidden costs might be desirable.

@leahstokes

Dr. Leah C. Stokes

4 years

Carbon pricing has dominated climate policy debates for decades. But the solution is ineffective and politically toxic. We need standards, investments and justice to meet this crisis at its scale. My latest in @BostonReview with @mmildenberger . 🧵...

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Nick Hagerty

5 years

I'm so glad the Nobel is finally recognizing the empirical revolution in economics. Hope to see more of it in the next few years -- and more women!!

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Nick Hagerty

3 years

Other great resources already on my radar: @tyleransom @edrubin @nickchk @Dan_M_Sullivan

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Nick Hagerty

2 years

Also: Mullahy & Norton show that when you place the 0's far from the rest of the distribution (when units are small or c in log(y+c) is large), you're basically just estimating a linear probability model! Intuition: you're putting more weight on the extensive margin

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Nick Hagerty

7 months

In Stata, always use reghdfe!!

@politicory

Cory Smith

7 months

@thetahat @shoshievass Yes (just tested), reghdfe prioritizes the absorbed vars which might have fixed this case. Or a more general option to absorb controls in general (would cut down table length…) But this case would still have loopholes for a user to slip through

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Nick Hagerty

2 years

The other by @JohnMullahy and @healtheconnort1

@PHuenermund

Paul Hünermund is on Bluesky

2 years

New paper by @JohnMullahy and @healtheconnort1 : "Why Transform Y? A Critical Assessment of Dependent-Variable Transformations in Regression Models for Skewed and Sometimes-Zero Outcomes"

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Nick Hagerty

5 years

* If you don't understand the seminars, it's not because you're dumb, it's just because you haven't seen enough seminars yet

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Nick Hagerty

11 months

So about 1 student out of every 20 to 100 will see a grandparent die during a usual semester Which means that in most college courses there will typically be about 1 real GP death Or, in a 300-student intro course, even 15 GP deaths are perfectly plausible, actuarially speaking

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Nick Hagerty

5 years

* Mindful time management and activities outside econ can help you avoid conflating your work with your identity

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Nick Hagerty

2 years

This is a real thing now!

@AgEcon_Econ

Montana State Ag Econ & Econ

2 years

We're excited to announce our 2023 Applied Economics Summer Conference! Join us in the beautiful mountains of Bozeman, Montana from June 20-21. Application portal coming soon.

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Nick Hagerty

2 years

If there are ANY other channels through which Z affects Y, it's a textbook violation of the exclusion restriction. Your estimate is not necessarily any closer to a causal estimate than OLS, and it's arguably now harder to interpret

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Nick Hagerty

2 years

2. (M&N) Use Poisson regression. Poisson helps concern (b) but not (a). It directly estimates the log difference of the means in the treatment & control groups: log(E[Y(1)]) - log(E[Y(0)]) Not the average log difference: E[log(Y(1)) - log(Y(0))], which is what I tend to prefer

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Nick Hagerty

2 years

4. (C&R) Take a stand on how much you value the extensive margin. Estimate ATE for m(y) = =log(y) for y>0 and =-x for y=0, where you choose x based on theory. This is exactly what we're doing already, but without hiding the parameter choice!

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Nick Hagerty

2 years

It's a total pain to constantly adjust to new methods and norms and I feel that. But I'm also glad/excited/relieved when the econometricians find problems with common methods and point us in better directions. It means our hard work is more likely to actually reveal some truth

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Nick Hagerty

2 years

5. (Both papers) Use a two-part model to separate the extensive and intensive margins. This requires some further structural assumptions (though they can be weak if you're OK with bounds instead of a point estimate) Think I need to review/learn more how to implement these!

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Nick Hagerty

1 year

It is really really important for people to understand that the sky-high rates of depression and anxiety in economics departments are not at all the same thing as the inclination to write cruel and bigoted things on an anonymous internet forum

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@hagertynw

Nick Hagerty

4 years

I'm just really sorry to all my international friends/colleagues/students/followers. Even if you aren't directly hit by this policy I know the uncertainty and fear is awful. The US has never quite lived up to its welcoming image but I hope we can at least start trying again soon.

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Nick Hagerty

2 years

All you're doing is scaling one causal effect by another. There's no magic bullet I find this way of thinking about IV a lot more intuitive than the usual "find the variation in X due to Z and use that predicted value" And a lot clearer for evaluating the assumptions required

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Nick Hagerty

9 months

Mainstream economics got to climate a bit late but it sure is better than never

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Nick Hagerty

5 years

* There is no end to the status game, so cash your chips in all along the way and try to enjoy the process

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Nick Hagerty

2 years

Another note for any econometricians who might be listening... a "proof sketch" that involves supermodularity and Frechet-Hoeffding bounds is not exactly, uh, accessible to us applied researchers 😂 (I understand your incentives of course -- this is a structural complaint lol)

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Nick Hagerty

3 years

Here's a preliminary topic list: R basics coding practices version control data cleaning describing data data visualization spatial analysis webscraping prediction vs. causal inference some basic ML (clearly, I'm going to be learning a lot myself)

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Nick Hagerty

3 years

@AnthonyLeeZhang I spent 3 weeks driving across the country and 6 weeks wandering South America, used up my meager life savings, came back just in time for math camp, and have never had a single regret

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Nick Hagerty

8 months

This debate ceases to exist when you realize that "numbers that ought to be replicable" and "numbers that ought to be communicated in the first place" are the exact same numbers

@hagertynw

Nick Hagerty

8 months

@CFCamerer @ben_golub @AEAjournals @ChicagoBooth Can't find problems in the 3rd significant digit if you only report 2!

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Nick Hagerty

2 years

1. (Mullahy & Norton) Forget the proportional treatment effects, just estimate OLS on the untransformed outcome. I don't like this because (a) I often care more about the avg proportional change than the avg level change across individuals (b) estimates can be noisy for skewed y

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Nick Hagerty

4 years

My two favorite @nberpubs workshops, Environmental and Development, are livestreaming today & tomorrow Tune in to Environmental today at 3p eastern to see me present "The Scope for Climate Adaptation: Evidence from Water Scarcity in Irrigated Agriculture"

@KnittelMIT

Christopher Knittel

4 years

Excited for tomorrow's @nberpubs Environment and Energy Summer Institute. Thank you to the authors for writing such great papers, my co-organizer #ReedWalker (UCB) for carrying me, and most of all to the discussants for the selfless work!!!! Looking forward to learning a ton.

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Nick Hagerty

2 years

RFF's new estimate of the Social Cost of Carbon ($185/ton) reflects the incredible amount of new research on climate impacts that's been done since the Obama Admin first set the SCC at $51. Excited to dig in, and hope the federal gov takes this seriously.

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Nick Hagerty

4 years

One benefit of teaching on Zoom: remote guest talks are no less natural than normal lectures This fall I was super lucky to snag @danaehernandezc , @MeeraMahadevan , and @gabeenglander to speak to my natural resource econ undergrads about their awesome research for 30-40 min each

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Nick Hagerty

5 years

My first #AERE2019 conference was awesome and my post-conference hikes were ok too I guess

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Nick Hagerty

3 years

Fun fact: Tamil Nadu has a larger population than France

@JPAL_SA

J-PAL South Asia

3 years

📢 @JPAL co-founder & Nobel laureate #EstherDuflo ( @MIT ) has been appointed to the newly constituted Economic Advisory Council to the @CMOTamilnadu . The Council will provide guidance in promoting inclusive economic growth in #TamilNadu [1/4].

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Nick Hagerty

10 months

Time for a fun game! Which is closer to the freezing point of water? 1. the temperature of the human body, a sweltering 98.6 degrees Fahrenheit 2. the air outside right now in Montana Hint: it's not #2

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Nick Hagerty

5 years

The impact of field experiments in development (which E+A have promoted) isn't just about what we learn from these few hundred studies. It's about starting to budge the way major organizations all around the world think about evidence in their decision-making.

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Nick Hagerty

8 months

Come for the political effects of ag subsidies Stay for a great practical explanation of how to analyze a shift-share natural experiment using the new "design-based" paradigm (this is probably the future)

@a_strezh

Anton Strezhnev

8 months

New WP: "The Political Benefits of the Monoculture" @BobbyGulotty and I took a look at whether Trump's ag subsidies helped him in 2020. tl;dr - they did.

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Nick Hagerty

2 years

Today in Montana problems: Found a marmot in our car It hitched a ride home from our hike in the front of the engine compartment for a 2 hour drive. It then refused to come out and kept emitting ear-piercing chirps

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Nick Hagerty

2 years

@Jabaluck This is a great thread for what to do practically, but it's distinct from how to handle the emotions. It's easy to get overly discouraged when you don't yet feel secure/established in your abilities/career. Need tools to deal with the feelings before you can make rational choices

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Nick Hagerty

3 years

Focus is on practical tools (they take econometrics separately). Some students go on in research, others go into industry. Obviously I am going to steal heavily from @grant_mcdermott (thanks Grant!)

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Nick Hagerty

1 year

Too bad SCOTUS missed @ctaylor463 and @HannahDruck 's 2022 paper in the AER "We evaluate wetland location relative to the surface water network and find that the most valuable wetlands for flood mitigation are those located 500 to 750 meters from the nearest stream or river."

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Nick Hagerty

5 years

Here's a different link, if you want something you can bookmark or share (the source file is on there too)

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Nick Hagerty

3 years

Insightful & useful piece by @RichaelYoung on water markets A couple key points: * Most transfers are informal - more reporting would help markets work better * Regulatory complexity isn't the enemy - the problem is when it isn't clear or predictable

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Trading Water, Saving Water | PERC

Water markets help the West cope with supply-side shocks and evolving demands.

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Nick Hagerty

1 year

In fact it's more plausible that the toxic culture in econ causes mental health problems than the other way around Some habitually cruel people might be mentally ill, but most mentally ill people are not habitually cruel

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Nick Hagerty

5 months

When weather fluctuations affect people's later decisions, what do we learn? * Many papers interpret as adaptation * This article shows why that's often wrong. Evidence of irrationality! Temporary shocks shouldn't affect beliefs Except in general that may be incomplete too (1/2)

@JaereAere

JAERE

5 months

📢 Out now 📢 in the July 2024 issue of @JaereAere : "Positive Rainfall Shocks, Overoptimism, and Agricultural Inefficiency in China" by Kaixing Huang, Jingyuan Guo, and Da Zhao Read it here:

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Nick Hagerty

6 months

Maybe a better way of asking this question: What have you learned through experience about choosing and working with coauthors, that led you to make (or intend to make) changes in your process for the next time?

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Nick Hagerty

6 months

Ok econ twitter: How do you find & choose coauthors? I'm curious how others approach it. Intentional or serendipitous? Start w/ the idea or the people? How do you tell if you'll work well together? Look for specific skillsets you're weaker at, or thought partners for everything?

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Nick Hagerty

2 years

Huge thanks to these authors, who have generously published prior materials under open licenses and/or given me permission to adapt their stuff * @grant_mcdermott * @edrubin * @rafalab * UC Berkeley's D-Lab

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