Ryohei Mogi
@ryomogi.bsky.social
Demographer bridging research and action
Turning evidence into action to tackle low fertility with policymakers, media, & society.
📩 ryohei.mogi(at)upf(.)edu
Turning evidence into action to tackle low fertility with policymakers, media, & society.
📩 ryohei.mogi(at)upf(.)edu
I had the privilege of being interviewed by rtve (@rtvenoticias.rtve.es ), Spain’s national public broadcaster, about our research on fertility desire and romantic partnership.
The interview was a live radio show and now it is online (2:15-7:45): www.rtve.es/play/audios/...
The interview was a live radio show and now it is online (2:15-7:45): www.rtve.es/play/audios/...
October 1, 2025 at 5:51 AM
I had the privilege of being interviewed by rtve (@rtvenoticias.rtve.es ), Spain’s national public broadcaster, about our research on fertility desire and romantic partnership.
The interview was a live radio show and now it is online (2:15-7:45): www.rtve.es/play/audios/...
The interview was a live radio show and now it is online (2:15-7:45): www.rtve.es/play/audios/...
Have you heard of the Fire Horse Year?
In Japan, fertility dropped 26% that year & jumped 41% the next — the biggest change in world history since 1950. The reason? A widespread superstition related to the Fire Horse Year.
I just spoke about this in an interview with @financialtimes.com
In Japan, fertility dropped 26% that year & jumped 41% the next — the biggest change in world history since 1950. The reason? A widespread superstition related to the Fire Horse Year.
I just spoke about this in an interview with @financialtimes.com
What superstition tells us about humanity on.ft.com/4mBQqAN | opinion
What superstition tells us about humanity
Japan’s demographic plunge suggests our embrace of the unscientific hasn’t gone away
on.ft.com
September 26, 2025 at 4:26 AM
Have you heard of the Fire Horse Year?
In Japan, fertility dropped 26% that year & jumped 41% the next — the biggest change in world history since 1950. The reason? A widespread superstition related to the Fire Horse Year.
I just spoke about this in an interview with @financialtimes.com
In Japan, fertility dropped 26% that year & jumped 41% the next — the biggest change in world history since 1950. The reason? A widespread superstition related to the Fire Horse Year.
I just spoke about this in an interview with @financialtimes.com
A press release of our new study in English/Spanish/Catalan has just out. We explain a situation those who do not have any romantic partner in Japan and found that individuals without a romantic partner are more likely to revise their fertility desires downward.
www.upf.edu/web/focus/w/...
www.upf.edu/web/focus/w/...
Un estudi amb anàlisis de la UPF explora com tenir parella determina canvis en els desitjos de fertilitat al Japó
La recerca, en què ha pres part Ryohei Mogi, investigador del Departament de Ciències Polítiques i Socials de la Universitat, mostra que les persones sense parella sentimental tenen més probabilitats ...
www.upf.edu
September 25, 2025 at 7:10 AM
A press release of our new study in English/Spanish/Catalan has just out. We explain a situation those who do not have any romantic partner in Japan and found that individuals without a romantic partner are more likely to revise their fertility desires downward.
www.upf.edu/web/focus/w/...
www.upf.edu/web/focus/w/...
Only 4 𝐤𝐞𝐲 𝐟𝐢𝐠𝐮𝐫𝐞𝐬 𝐭𝐨 𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝 𝐉𝐚𝐩𝐚𝐧𝐞𝐬𝐞 𝐥𝐨𝐰 𝐟𝐞𝐫𝐭𝐢𝐥𝐢𝐭𝐲 𝐬𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧
September 17, 2025 at 5:44 AM
Only 4 𝐤𝐞𝐲 𝐟𝐢𝐠𝐮𝐫𝐞𝐬 𝐭𝐨 𝐮𝐧𝐝𝐞𝐫𝐬𝐭𝐚𝐧𝐝 𝐉𝐚𝐩𝐚𝐧𝐞𝐬𝐞 𝐥𝐨𝐰 𝐟𝐞𝐫𝐭𝐢𝐥𝐢𝐭𝐲 𝐬𝐢𝐭𝐮𝐚𝐭𝐢𝐨𝐧
Reposted by Ryohei Mogi
先日出版された論文 academic.oup.com/sf/advance-a... のプレスリリースを出してもらいました。
交際相手がいないと「子どもが欲しい」が不確実に 恋愛関係が出生願望に与える影響をパネルデータで実証
www.univ.gakushuin.ac.jp/about/press/...
This is a joint work with @ryomogi.bsky.social @alyceraybould.bsky.social
交際相手がいないと「子どもが欲しい」が不確実に 恋愛関係が出生願望に与える影響をパネルデータで実証
www.univ.gakushuin.ac.jp/about/press/...
This is a joint work with @ryomogi.bsky.social @alyceraybould.bsky.social
【研究成果・プレスリリース】交際相手がいないと「子どもが欲しい」が不確実に 恋愛関係が出生願望に与える影響をパネルデータで実証｜学習院大学
学習院大学の公式サイトです。大学概要、入試情報、学部・大学院情報等、各種情報がご覧になれます。
www.univ.gakushuin.ac.jp
August 26, 2025 at 6:15 AM
先日出版された論文 academic.oup.com/sf/advance-a... のプレスリリースを出してもらいました。
交際相手がいないと「子どもが欲しい」が不確実に 恋愛関係が出生願望に与える影響をパネルデータで実証
www.univ.gakushuin.ac.jp/about/press/...
This is a joint work with @ryomogi.bsky.social @alyceraybould.bsky.social
交際相手がいないと「子どもが欲しい」が不確実に 恋愛関係が出生願望に与える影響をパネルデータで実証
www.univ.gakushuin.ac.jp/about/press/...
This is a joint work with @ryomogi.bsky.social @alyceraybould.bsky.social
Do you know year of Fire Horse? And do you know the total fertility rate dropped 26% in the last fire horse year in Japan?
My new blog post explains how the superstition changed fertility pattern in the last Fire Horse Years (1906, 1966) in Japan.
2026 will be Fire Horse...
My new blog post explains how the superstition changed fertility pattern in the last Fire Horse Years (1906, 1966) in Japan.
2026 will be Fire Horse...
September 9, 2025 at 5:11 AM
Do you know year of Fire Horse? And do you know the total fertility rate dropped 26% in the last fire horse year in Japan?
My new blog post explains how the superstition changed fertility pattern in the last Fire Horse Years (1906, 1966) in Japan.
2026 will be Fire Horse...
My new blog post explains how the superstition changed fertility pattern in the last Fire Horse Years (1906, 1966) in Japan.
2026 will be Fire Horse...
[New finding!]
Ryohei Mogi, Ryota Mugiyama, & Alyce Raybould (@alyceraybould.bsky.social ) has shown that individuals without a romantic partner are more likely to revise their fertility desires downward.
Ryohei Mogi, Ryota Mugiyama, & Alyce Raybould (@alyceraybould.bsky.social ) has shown that individuals without a romantic partner are more likely to revise their fertility desires downward.
August 6, 2025 at 5:36 AM
[New finding!]
Ryohei Mogi, Ryota Mugiyama, & Alyce Raybould (@alyceraybould.bsky.social ) has shown that individuals without a romantic partner are more likely to revise their fertility desires downward.
Ryohei Mogi, Ryota Mugiyama, & Alyce Raybould (@alyceraybould.bsky.social ) has shown that individuals without a romantic partner are more likely to revise their fertility desires downward.
Why is Japan’s fertility rate falling—and what’s really behind it?
We wrote a 10,000+ word guide on it in plain English with data + research insights.
No jargon, just clarity.
Please share this piece if you find it useful!
rmogi.medium.com/all-you-need...
We wrote a 10,000+ word guide on it in plain English with data + research insights.
No jargon, just clarity.
Please share this piece if you find it useful!
rmogi.medium.com/all-you-need...
All you need to know about low fertility issues in Japan
This article aims to share the basic knowledge on Japanese low fertility issues using data and academic findings.
rmogi.medium.com
April 22, 2025 at 7:21 AM
Why is Japan’s fertility rate falling—and what’s really behind it?
We wrote a 10,000+ word guide on it in plain English with data + research insights.
No jargon, just clarity.
Please share this piece if you find it useful!
rmogi.medium.com/all-you-need...
We wrote a 10,000+ word guide on it in plain English with data + research insights.
No jargon, just clarity.
Please share this piece if you find it useful!
rmogi.medium.com/all-you-need...
Tomorrow at 12:30, I will give a talk about some of my ongoing works on partnership among childless individuals at the DemoSoc research group, UPF.
It is a short notice, but please come if you are around Barcelona! I would be happy to see you there! Unfortunately, not available online.
It is a short notice, but please come if you are around Barcelona! I would be happy to see you there! Unfortunately, not available online.
February 19, 2024 at 12:38 PM
Tomorrow at 12:30, I will give a talk about some of my ongoing works on partnership among childless individuals at the DemoSoc research group, UPF.
It is a short notice, but please come if you are around Barcelona! I would be happy to see you there! Unfortunately, not available online.
It is a short notice, but please come if you are around Barcelona! I would be happy to see you there! Unfortunately, not available online.
Super excited to organise a session “Relationship as an initial step of union formation and childbearing” at #IPC2025 🙌
Please consider submitting your works on relationship/dating. You can even start now as we have plenty of time to the submission deadline: Sep2024!
iussp.org/sites/defaul...
Please consider submitting your works on relationship/dating. You can even start now as we have plenty of time to the submission deadline: Sep2024!
iussp.org/sites/defaul...
November 17, 2023 at 1:09 PM
Super excited to organise a session “Relationship as an initial step of union formation and childbearing” at #IPC2025 🙌
Please consider submitting your works on relationship/dating. You can even start now as we have plenty of time to the submission deadline: Sep2024!
iussp.org/sites/defaul...
Please consider submitting your works on relationship/dating. You can even start now as we have plenty of time to the submission deadline: Sep2024!
iussp.org/sites/defaul...
I started publishing a blog post summarising research on low fertility for a lay audience. The first blog post is about the overview of low fertility in Japan.
Please help me to spread this post to outside of my network🙌
rmogi.medium.com/overview-und...
Please help me to spread this post to outside of my network🙌
rmogi.medium.com/overview-und...
October 20, 2023 at 12:33 PM
I started publishing a blog post summarising research on low fertility for a lay audience. The first blog post is about the overview of low fertility in Japan.
Please help me to spread this post to outside of my network🙌
rmogi.medium.com/overview-und...
Please help me to spread this post to outside of my network🙌
rmogi.medium.com/overview-und...