🚨Hi #EconTwitter,🚨. I would like to introduce "World Historical Battles Database (WHBD)", which contains information on about 8,000 battles in world history from ancient times to the present day. Thread (1/9)

Thank you @MarshallBBurke!.

What do you want to know?.

RT @cepr_org: .@ShuheiKitamura @osaka_univ_e finds land redistribution from landlords to tenants in #Japan after WWII led #farmers to use l….

Draft (preliminary and complete) available here: (9/9).

These results indicate that UFO sightings lead voters to believe that UFOs are “unidentified threats” that warrant further defense enhancements and scientific research. UFOs seem to have no small impact on politics and public policy, although their true identity is unknown. (8/9).

In addition, although the effect is weak, I found evidence suggesting that UFO sightings lead voters to believe that the government should increase spending on technology and science. By contrast, I did not find a significant effect on welfare spending. (7/9).

Moreover, I found that UFO sightings alter voters' beliefs on policies. In particular, I found that UFO sightings lead voters to believe that the government should increase defense spending. (6/9).

Breaking down the effect on the presidential elections by election year, I found that a similar effect tended to appear in each election year analyzed except 2016. In the 2016 race between Donald Trump and Hillary Clinton, the effect was null or even slightly negative. (5/9).

I found that UFO sightings increased the vote share of the Republican candidates in presidential elections between 2000 and 2016: One std increase in UFO sightings increases the vote share by 1.32 std. Therefore, the effect size is considerable. (4/9)

I take the first step towards investigating the influence of UFOs on the political beliefs and behaviors of voters. In this paper, I estimated the effect of UFO sightings using the instrumental variables method with cloud cover adopted as the source of exogenous variation. (3/9)

A congressional hearing on UAP/UFOs was held this May, 50 years after the previous congressional hearing on this phenomenon. Despite the enormous popular interest in and continued security concerns regarding UFOs, little is known about their impact on voters. (2/9).

Hi #EconTwitter #PoliSciTwitter,. I wrote a paper on 🛸 and politics using data from the United States. I found that UFO sightings affect electoral outcomes and the beliefs and behaviors of voters. 🧵(1/9)

Thanks to @PascaliLuigi and @joachim_voth for organizing such a great session. The first day was great and I am looking forward to the second day. Wish we could have met in person. Get well soon! :) #bseforum .

Hi #EconTwitter, #PoliSciTwitter:.My colleagues and collaborators (incl. myself) have created this data platform for social scientists. This website contains links to a variety of data sources for conducting research in social sciences. Enjoy! :).

I'm looking forward to our session on economic growth and structural transformation on Saturday (3:45-5:45 EST) hosted by @MelissaLDell. I'm presenting my work on land reform and structural transformation using historical data of Japan. #ASSA2022

RIP.

Wow. Thanks everyone! :).

RT @CedricChambru: The Historical Social Conflict Database (HiSCoD) is getting ready to blow out its first candle!!!. .

As I am educated as an economist, but not intensively in any other field, I have great respect for the knowledge of experts in other fields. Please share it with me. My subjective gut feeling is that this is going to be a cool project. (4/4).

To this end, I would love to collaborate with historians, conflict researchers, economists, political scientists, computer scientist, etc. to further improve the dataset. (3/4).

I consider the WHBD to be the start, not the end, of the project. I wanted to create a relatively solid backbone to start with. It will be updated in future revisions, as mentioned in the paper, and that’s why I put a relatively large "Version 1.0" on the front page. :). (2/4).