Jan Feld

Economist interested in meta-science and open science.

[Jan Feld @EconFeld]

Are teachers *generally* better at teaching students of their own sex?

NO in primary education,
YES in secondary education.

A 🧵generalizability and same-sex teacher effects

https://t.co/3dle8s9UoZ

[Jan Feld @EconFeld]

@ZacGross @J_Meanwell In New Zealand supermarkets also need to display the unit price. But we still see quantity surcharges.

[Jan Feld @EconFeld]

Ever stood in a supermarket aisle trying to work out whether the bigger pack is actually cheaper?

When the larger package is more expensive per unit than the smaller one, it’s called a quantity surcharge.

Madhura Banerjee and I looked for these in NZ supermarkets. 🧵

[Jan Feld @EconFeld]

Paper is published in New Zealand Economic Papers.

Open access paper here, for anyone interested: https://t.co/t87oTJBhYz

[Jan Feld @EconFeld]

We also looked at whether surcharges were more common in richer or poorer neighbourhoods.

We expected more in richer areas, but the data did not support that. If anything, our results pointed the other way.

[Ulf Zölitz @uZoelitz]

New working paper! We ran a field experiment with >1,300 university students randomly assigned to online vs in-person lectures in first-semester courses. What happens? Online instruction hurts performance, but only for women♀️📉
wt @_XiaoyueShan_ @UschiBackes

[I4R @I4Replication]

New research alert! Our study investigates the effectiveness of human-only, AI-assisted, and AI-led teams in assessing the reproducibility of quantitative social science research. We've got some surprising findings!

[Düsseldorf Institute for Competition Economics @DICEHHU]

We are very excited to welcome @EconFeld to our #ResearchSeminar today. He will give a talk on “On the generalizability of sex-differences in risk-attitudes”. The seminar takes place from 14:15 to 15:30 in room S3/4 in the Oeconomicum (building 24.31).
https://t.co/V4vGnhsmbi

[Misha Teplitskiy | Science of Science @MishaTeplitskiy]

Better scientific writing causes better evaluations, and is associated with more citations

1. https://t.co/2f8EHOX5P7
2. https://t.co/9L5fLMZym1

[I4R @I4Replication]

We had games in Munich earlier this week. 60+ participants reproducing 15 studies (3 econ, 4 poli sci and 8 psych articles)!

Some papers did not reproduce, missing data/codes, 2x revealed identity of participants, errors, etc.

A couple of thoughts from our chair (AB). 🧵

[Rigissa Megalokonomou @rmegal]

I’m very happy to introduce our new WP with @yveszenou1, @BhagyaGunaward5 and @sofoklis_goulas! We study the impact of being randomly assigned to a classroom with a same-gender top-performing student on short- & long-term educational outcomes. #EconTwitter @MonashBusiness

[Trade Diversion (Jonathan Dingel) @TradeDiversion]

Job-market candidates:

- Download 10 JMPs in your field, read them in ≤5 hours, and rank them from best to worst. Now you know why recruiting committees value readability.

- Editing improves paper quality. See RCT: https://t.co/MUtlvXcr4b

(More at https://t.co/9GON2vY92y)

[IZA @iza_bonn]

🌞 Summer's heating up at IZA! 🔥 A huge welcome to our fantastic visiting researchers this month! Special shoutout to @EconFeld who's joining us for the rest of the year! We're excited to have you all! ✨

[Jan Feld @EconFeld]

really important work!

[Doug Campbell @TradeandMoney]

How credible was the "credibility revolution"? How robust is empirical research in economics? We just replicated a year's worth of the American Economic Review & had economists predict robustness. Here's what we learned. https://t.co/kOWJvSa6vJ

[NBER @nberpubs]

In Taiwan, disadvantaged minorities lower student effort, parental investments, and teacher engagement in classrooms to which they are randomly assigned, and this lowers student test scores, from @adegendre, @chriskarbownik, @nsalamancaa, and @yveszenou1 https://t.co/PMYzemxz9g

[David Evans @DaveEvansPhD]

It's great to see a meta-analysis and multi-country study verify more robustly what @ALeNestour & I observed in our quick @CGDev look at whether women teachers are better for girls' education (yes in secondary; no in primary): https://t.co/cBrakkvhMf

[Giuseppe Sorrenti @giu_sorrenti]

Very thought-provoking paper by an amazing team of economists! A must read... (independently of your sex😜)

[Nathan Kettlewell @NathanKettlewe1]

Very impressive research by Jan and the team, which they just keep improving (I discussed a version of this paper two years ago and it was an epic then).

[Ruben C. Arslan @rubenarslan]

Very impressive online supplement and not just because the Shiny app actually responds quickly.

[Nicolas Salamanca @nsalamancaa]

Our work with @AdeGendre, @chriskarbownik and @yveszenou1 combines a simple model and awesome data to show how and why disadvantaged minorities in the classroom to affect behaviors of students, parents and teachers, and ultimately test scores. Check it out!