Jerry Ratcliffe
College prof, ex-UK cop, host of the Reducing Crime podcast, scientific advisor to the IACP. In my spare time, I try not to crash planes.
Google Scholar: scholar.google.com/citations?user=BOJI…
ORCID: orcid.org/0000-0002-0730-6761
- Reposted by Jerry RatcliffeNew pod out with @jerryratcliffe.net! Jerry is one of the smartest voices out there working to use research & science to improve policing. Give it a listen! Apple - podcasts.apple.com/us/podcast/t... Spotify - open.spotify.com/episode/4k6E... Amazon - music.amazon.com/podcasts/cad...
- Reposted by Jerry RatcliffeThis is the most astonishing graph of what the Trump regime has done to US science. They have destroyed the federal science workforce across the board. The negative impacts on Americans will be felt for generations, and the US might never be the same again. www.nature.com/immersive/d4...
- Police departments struggle to find research partners, in part because academic criminology has actively worked against policing research for some years now. Source: www.jerryratcliffe.net/_files/ugd/f...
- Reposted by Jerry RatcliffeDo you explore intersections between digitalization and geography of crime? @asiermoneva.com, Wim Bernasco and I look forward to your contribution to our guest-edited special issue “The Geography of Crime in the Digital Era”. See call for papers (www.sciencedirect.com/journal/jour...). Please share.
- Reposted by Jerry RatcliffeThe first paper in our inaugural collection is now out. Much thanks @jerryratcliffe.net www.tandfonline.com/doi/full/10....
- Crime nerds, I need help. @LessCrime's excellent RSS feed recently posted an article about what I think was a study looking at if people took more cyber crime prevention advice when it was from authorities rather than hackers (if I recall), but now I can't find it. Anyone help? @asiermoneva.com?
- BlueSky filesize limits are a p.i.t.a, but if you want weekly summaries of key crime and policing studies and ideas, please follow reducingcrime_ over at instagram, or Reducing Crime on LinkedIn.
- If you are on Instagram there's a 90 second summary of the Philadelphia Predictive Policing Experiment findings. (BlueSky doesn't let us post 90 second videos because the file size is too large) www.instagram.com/reel/DPjPS_Q...
- This week is the ASC conference, so here’s mentions of “abolish” in recent programs: 2021 1 program, 5 submissions 2022 1 submission 2023 4 programs, 5 subs 2024 5 programs, 3 subs 2025 2 programs (not incl. one about abolishing nuclear weapons) Is this idea's rampant stupidity finally receding?
- The American Society of Criminology conference is next week and this is your annual reminder that most of the presentations will likely be 💩 Here are some ways to be less 💩 www.jerryratcliffe.net/post/i-want-...
- If you aren't following the work of @benbradford.bsky.social then you are missing out on thoughtful insights into policing and public safety. Apple: apple.co/4opeJDD Spotify: bit.ly/3WBBJ6f
- Trust and legitimacy are a resource for police. Out now: Episode #88 with the excellent @benbradford.bsky.social Apple: apple.co/4opeJDD Spotify: bit.ly/3WBBJ6f
- An interesting thought experiment here, and ... if you follow the logic of the thread, raises broader and potentially significant questions about the validity of 'lived experience' as a viable criminological research tool.
- Featuring a little of my chat with @martinkaste.bsky.social on the crime reduction implications of the deployment of National Guard in Washington DC. www.npr.org/2025/10/02/n...
- To contextualize this week’s political commentary, of the 2,647 identified extremist violent offenders in the US since 2000, far-right extremists were more than 7 times more represented in the data than far-left extremists. * No, this isn’t to negate the abhorrent shooting this week.
- A must-read op-ed by Keith Humphreys in the NY Times, covers both how harm reduction advocates abandoned communities (hello Kensington in Philadelphia) and why mandating drug treatment will help many. His @reducingcrime.com podcast ep is a must: apple.co/4ne9Jko www.nytimes.com/2025/09/02/o...
- In the new episode of the @reducingcrime.com podcast, @mattbland.bsky.social - former analyst and now evidence-based policing guru - explains the value he got from socializing with police officers. Apple: apple.co/4g269aC Spotify: bit.ly/4oXiQYc
- Just asked Google how President Trump activated the National Guard. The response was... not optimal.
- Fun chat covering Matt's experiences as an analyst in the National Intelligence Model and where #evidence-based_policing is right now. Tons of great advice for crime analysts working with police departments.
- EPISODE ALERT: #86 with @mattbland.bsky.social, chief operating officer of the @sebp-uk.bsky.social and associate prof in the executive policing programme at @cam.ac.uk. Apple: apple.co/4g269aC Spotify: bit.ly/4oXiQYc SoundCloud: on.soundcloud.com/XTAqMgkSTjNt...
- New Federal Bureau of Investigation (FBI) agent training to go from 18 weeks to 8 weeks, and dropping the degree requirement? If the plan is to make the FBI a laughing stock, this is the way to do it. www.nytimes.com/2025/08/21/u...
- Reposted by Jerry RatcliffeWhen working out if people from different ethnic groups are stopped by police disproportionately, it really matters what population you compare the number of stops to. This paper by @jerryratcliffe.net compares several good and bad options:
- With fiscal austerity affecting many police departments, the costs of analytical software can be seen as prohibitive. Here, @mattashby.com is doing a considerable service to the crime analysis community with this new #Rstat package.
- Announcing sfhotspot, an #RStats package to make it as easy as possible to identify and map concentrations of crime (or concentrations of any other points in space). Introduction: lesscrime.info/post/sfhotsp... Package website: pkgs.lesscrime.info/sfhotspot/ 🧵
- Reposted by Jerry RatcliffeIf you are over on IG I’ve started a new series of short crime and policing- related reels like this one on procedurally-just speeding tickets reducing speeding. www.instagram.com/reel/DLzfdoI...
- If you have civilian staff in your police department, you will want to forward this podcast episode to them. Packed with tips on how to survive as a senior civilian leader in policing, from one of the best.
- EPISODE ALERT: #85 Nola Joyce Nola has had leadership roles with the police departments of Chicago, Washington D.C., and Philadelphia where she held the rank of Deputy Commissioner. She discusses the role of civilian staff in policing. Apple: apple.co/4lMVUJ8 Spotify: bit.ly/4fkPfnd
- Alex Murray from the Society of Evidence-Based Policing kicks off the global societies meeting in Cambridge to a packed room.
- Reposted by Jerry RatcliffeStrong evidence for a captured apex court. Compiled by the excellent Adam Bonica.
- If you are over on instagram, I'm posting sub-90 second snippets about crime and policing.
- US cities are underpoliced. www.instagram.com/reel/DLpeOhk...
- Reposted by Jerry RatcliffeIf you are over on IG I’ve started a new series of short crime and policing- related reels like this one: www.instagram.com/reel/DLpeOhk...
- Are US cities underpoliced? Yes, according to two studies by Aaron Chalfin. See the findings in about 60 seconds www.instagram.com/reel/DLpeOhk...
- Reposted by Jerry RatcliffeFantastic episode of the @reducingcrime.com podcast about rapid video response to domestic abuse calls. It’s particularly interesting because so many people said the intervention wouldn’t work, but (contrary to ‘common sense’) it did.
- Want short reels on crime and policing? Look no further… than reducingcrime_ on IG 😉
- New series of short reels over on Instagram at reducingcrime_ Come on over 😉
- Reposted by Jerry RatcliffeShane Johnson and Kate Bowers are awarded the 2025 Environmental Criminology and Crime analysis award. Award and motivation delivered by Marcus Felson. #ecca2025
- This was a fun episode to record. Stacey is smart, insightful about #EBP and fun to hang with, all of which comes across in this episode. Here she talks about the benefits of dedicated RVR officers for domestic violence. Full episode is great fun. Dive in!
- EPISODE ALERT: #84 just released! Stacey Rothwell pioneered the evaluation of #RVR - Rapid Video Response in policing domestic abuse with some spectacular results. Better response times and satisfaction Apple: apple.co/45NRBbv Spotify: spoti.fi/4lhGXys SoundCloud: on.soundcloud.com/ZSdEPso8a1r7...
- Tomorrow on the @reducingcrime.com a primer on police use and benefits of rapid video response, from Stacey Rothwell. Here she explains that even though we have new ways of calling the police, the response types haven't changed. This fun episode from a pub garden drops tomorrow.
- Reposted by Jerry RatcliffeTexas lawmakers have handed a series of victories to gun rights advocates, including banning "red flag" laws that allow guns to be taken from owners in crisis.
- Reposted by Jerry RatcliffeWe finally also have a Dutch Crime Severity Index (CSI), available online: nscr.nl/de-nederland...
- That is probably at a short enough distance that it qualifies as a potentially lethal shot. Sub 20 meters according to some guidelines. She is clearly not a threat.
- LAPD fired rubber bullets at Australian journalist @laurentomasi.bsky.social
- If you have any, and I mean ANY bad news to release, today is the day.
- Though the next quote from an independent researcher not connected with the program, says “There were significant reductions in fatal shootings where they weren’t doing their work" and more data is needed to show that the program was driving the drop in shootings. Violence reduction is challenging.
- 3 sentences epitomize why crime policy is a mess. 1. Violence fluctuates a lot while poverty has remained largely unchanged so this is questionable 2. But not crime scientists who study crime 3. These don't address the root causes in the first two sentences 🤷🙄 abc7chicago.com/post/studies...
