California Center For Population Research

I am excited to be hiring two post-doctoral positions at UCLA--please share with your networks. www.aeaweb.org/joe/listing.....

CCPR Workshop, 1/21/2026, Matias D. Cattaneo, (Princeton University), "Boundary Discontinuity Designs: Theory and Practice” #CCPR #UCLA Geo #CCPRWednesdays #UCLAEvent

Comment on After the Spike at UCLA event Me responding to a talk by Michael Geruso about his book with Dean Spears, After the Spike.

I had the opportunity to comment on Spears and Geruso's book After the Spike at an event at @ccpratucla.bsky.social last night, thanks to @marthajbailey.bsky.social. My remarks transcribed:

@mikegeruso.bsky.social, UT Austin, “After the Spike: Population, Progress, and the Case for People” CCPR Book Talk today at 6:00 pm in 314 Royce Hall! #CCPR #UCLA @uclacollege.bsky.social #CCPRWednesdays #UCLAEvent #CampusEvents #Seminar

@philipncohen.com, University of Maryland, “Research Is Not Enough: Public Engagement and the Citizen Scholar” CCPR Book Talk today at 12:00pm in 4240 Pub Aff!
#CCPR #UCLA @uclacollege.bsky.social #CCPRWednesdays #UCLAEvent #CampusEvents #Seminar

I need to take a cue from @philipncohen.com and do more to disseminate my academic research on the determinants of fertility. I am looking forward to his book talk on Wednesday at @ccpratucla.bsky.social .

This week CCPR's seminar series will feature @philipncohen.com discussing his book, "Research is Not Enough: Public Engagement and the Citizen Scholar." Join us on January 14 @12pm in Public Affairs 337.

CCPR is excited to host
@mikegeruso.bsky.social to discuss his book, After the Spike, Wednesday, Jan 11 @6pm, in UCLA's 314 Royce Hall. Comments by CCPR Director @marthajbailey.bsky.social
& @philipncohen.com. Reception to follow. RSVP here: eventsrsvp.ucla.edu/CCPRLecture2...

ICE Arrest Data Shows Many Immigrants With No Criminal Record In high-profile operations, more than half of those arrested had no criminal record, an analysis shows.

UCLA CCPR Faculty Affiliate Professor Graeme Blair, co-director of the Deportation Data Project, highlights new ICE data showing federal crackdowns are arresting mostly immigrants with no criminal record — far more non-offenders than serious criminals. www.nytimes.com/interactive/...

CCPR Workshop, 12/3/25, Development Workshop: Mary Jo Mitchell (Director of Gov’t and Public Affairs, PAA), “Engaging Policymakers: Role of PAA/APC and Population Scientists” on Zoom #CCPR #UCLA@UCLA #CCPRWednesdays #UCLAEvent

CCPR Seminar, 11/12/25, Nathan Nunn, University of British Columbia, “Development Mismatch?:
Evidence from Agricultural Projects in Pastoral Africa” #CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #seminar#CampusEvent

CCPR Seminar, 11/12/25, Manasi Deshpande, Johns Hopkins University, “Explaining the Historical Rise and Recent Decline in Social Security Disability Insurance Enrollment” #CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #CampusEvent

Global Fellows Program in Demography The PSTC has a long-standing tradition of hosting scholars, researchers, and practitioners from diverse corners of the globe.

The Brown Population Studies & Training Center is accepting applications to our Global Fellows Program. The program is for early- & mid-career demographers. We are especially interested in applications from scholars from low & middle-income countries. Share & apply! pstc.brown.edu/programs-and...

New Insights on Historic Causes of Maternal Deaths In historical populations, female death rates usually exceeded male death rates during the reproductive ages. The most obvious cause of this difference is deaths resulting from childbirth. Parish regi...

With a new measure to understand causes of maternal mortality, historical demographer George Alter finds infectious disease & nutrition improvements likely impacted falling maternal mortality more than shifting obstetrical practices. Just out in Population Studies: psc.isr.umich.edu/news/new-ins...

Subsidizing contraception has large and persistent effects on the choice of contraceptive method, resulting in significantly fewer pregnancies and abortions in the US, from @marthajbailey.bsky.social, Rebolledo, Gorgulu, Figone, Lang, Prettyman, and Dalton www.nber.org/papers/w34400

The Quiet Collapse of America’s Reproductive Health Safety Net kffhealthnews.org/MjEwNjQwMQ by @celinegounder.com via @kffhealthnews.org CC: @marthajbailey.bsky.social @whitneysrice.bsky.social @rachelfey.bsky.social @bthomas520.bsky.social @megankavanaugh.bsky.social

Congratulations to our very own Dr. Randall Kuhn for his amazing work in UCLA’s Fielding’s Department of Community Health Sciences as a principal investigator; securing a $3.4 million dollar NIH Grant!
#CCPR #UCLA #UCLAResearch #Research #ResearchSavesLives

CCPR Seminar 11/05/25, Stefanie DeLuca, Johns Hopkins University, “Colleges that obviously don’t have what you need”: Risk, Social Mobility and the Postsecondary Decisions of Low-Income Students” #CCPR #UCLA #CCPRWednesdays #UCLAEvent #CampusEvent

CCPR Workshop 10/29/25, Applying for the F31 National Research Service Award (NRSA) Fellowship #CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Workshop

CCPR Workshop 10/22/25: Marco Tabellini, Harvard Business School, “Climate Matching in Migration: From the American Frontier to Prehistory” #CCPR #UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Workshop

CCPR Miniconference 10/17: “Fertility and Demographic Change” #CCPR #UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #miniconference

CCPR Workshop 10/15: Brandon Stewart, Princeton University, “Using Large Language Model Annotations for the Social Sciences: A General Framework of Using Predicted Variables in Statistical
Analyses” #CCPR #UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Workshop

CCPR Welcome Events 10/8: Welcome and Orientation for Grad Students at 11:00 am; CCPR Welcome Event and Reception at 12:00 pm; Computing and Data Orientation Workshop today at 12:30 pm! #CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Workshop

Join us this week for CCPR’s Welcome Events and Computing Workshop!
#CCPR #UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Welcome

Kara Rudolph, Columbia University, "Causal Mediation Workshop” CCPR Workshop today at 12:00pm! #CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Workshop

New research brief by CCPR’s Randall Kuhn & Jessie Chien: Over 1/3 of unhoused Angelenos were affected by June 2025 ICE raids, protests & curfews—facing displacement, danger & injury. Outdoor sleepers were 2x more likely to experience negative effects.

hpri.usc.edu/homeless_res...

State Variations in ICE Arrests Following the 2024 Election Download Full Report (PDF) Authors: Paul Ong, Jonathan Ong, and Chhandara Pech Date: July 30, 2025 This brief examines why ICE arrest rates varied so dramatically across U.S. states in early 2025.

New research briefs by Dr. Paul Ong and Dr. Jonathan Ong that examine political & racial bias.

State Variations in ICE Arrests Following the 2024 Election: knowledge.luskin.ucla.edu/2025/07/30/s...

The Impact on Asian Communities:
www.aasc.ucla.edu/resources/aa...

Mare Student Lecture, Victoria Wang, “Adaptive Migration in the Face of Wildfires: Financial Constraints and the Role of Government Aid” CCPR Seminar today at 12:00pm!
#CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Seminar

Jens Ludwig, University of Chicago, “Unforgiving Places: The Unexpected Origins of American Gun Violence” CCPR Seminar today at 12:00pm!
#CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Seminar

UCLA Media Relations Team, “Media Relations 101” CCPR Workshop today at 12:00pm!
#CCPR #UCLA @UCLA #CCPRWednesdays #UCLAEvent #CampusEvents #Seminar