Jonathan Cohen

@jonpcohen

Runner, biker, and (free) food enthusiast.

Formerly @MITEcon, @nberpubs, @NorthwesternU, and @PremierMontrose.

Cambridge, MA jonpcohen.com Joined August 2016

455 Following 525 Followers 936 Posts

Latest posts 5

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Jonathan Cohen @jonpcohen Jun 12, 2020

Replying to @LuedtkeAllison

@LuedtkeAllison Here's an email template I've sent out to undergrads after they finish the intro course to highlight research + get connected with PhD students.

I tried to highlight diversity w/ topics and authors
(and have succinct 1-line summaries @SayWhatYouFound)

docs.google.com/document/d/1xr…

Jonathan Cohen @jonpcohen Sep 11

Neologism for sending AI-gleaned info that you haven’t vetted:

caveat aimptor

Jonathan Cohen @jonpcohen Aug 13

x.com/arpitrage/stat…

[1/8] Interesting observation! I recalled Augenblick having some papers on this, so I vibe coded up a test on scraped Polymarket data as a vibe check.

TLDR: the volatility does seem too high to be consistent with the "wise crowd" using Bayesian updating

Arpit Gupta Verified account @arpitrage Aug 12

These prediction markets are moving around way too much to be accurate information aggregators

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Jonathan Cohen @jonpcohen Dec 31, 2024

[1/16] Catching from @just_economics, here's my read

All: prices ↑

Chang (RF event study), BF (structural search), Coven (structural BLP): rents ↓, consistent w/ segmented markets S&D

Hanson (RF event study) and GQZ (RF shift-share): rents ↑, but w/ data & design drawbacks

Zach Mazlish @ZMazlish Dec 6, 2024

2 great JMPs this year on what happens when institutional investors buy up homes and convert them to rental units.
Curiously, the 2 papers have opposite findings!
One finds rents *increase*, due to investor's market power.
The other finds a decrease, due to increased supply...
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Jonathan Cohen @jonpcohen Aug 22, 2024

We found 55 papers on the impact of UI on UE and wrote #56 to aggregate that evidence.

@p_ganong summarized our paper, so I’ll add meta-commentary on meta-analysis.

Peter Ganong @p_ganong Aug 21, 2024

New paper out today on how unemployment benefits affect unemployment

TLDR: more generous benefits increase unemployment, but by much less than we thought and in ways that make it possible to make sufficient statistics more general than prior work

(thread on three key results)
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