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Iain Brennan

@iainbrennan.bsky.social
878 followers 552 following 163 posts

Professor of Criminology at University of Hull, UK. Violence research and prevention. Institutional Lead for Open Research.

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Jose Pina-Sánchez 🇪🇺 @jpinasanchez.eurosky.social · 21/09/2026
Excited to share our new programme of Social Research Methods at Leeds @srmleeds.bsky.social, @emrinke.bsky.social & Jade Parker. Speakers include: Peter King, @janselby.bsky.social, @rsolymosi.bsky.social, @rjbeecham.bsky.social, Martina Feilzer, Sam Langton, Ieva Skyte, and Ana Manzano.
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Dan Quintana @dsquintana.bsky.social · 19/09/2026
New preprint! 🎉 I analysed 1660 papers from 4 psychology journals and found materials sharing went from 9% of papers in 2015 to 82% in 2025, and these materials *do* get downloaded — a median of 135 times each. BUT shared code is often hard to run. doi.org/10.31234/osf... Let's walk through it 🧵
Two-panel figure. Panel a is a flow diagram tracking 1,611 empirical psychology articles from publication year (545 in 2015, 552 in 2020, 514 in 2025) to repository-link type: 785 link an OSF project, 85 link another platform, and 741 link no repository. Of those with an OSF link, download counts were retrieved for 670 and not retrieved for 115. Panel b is a line chart of the share of empirical papers linking OSF across 2015, 2020 and 2025. The overall rate, shown as a dashed black line, rises from 9% to 57% to 82%. All four journals rise steeply and end close together: Psychological Science 92%, JESP 89%, JML 83%, Cognition 76%, with Psychological Science highest throughout.Three-panel figure. Panel a: ridgeline plot of downloads per file by material type on a log scale, with the percentage never downloaded labelled for each — archive 16% of 545 files, documents 20% of 2,970, code 12% of 3,471, other 17% of 1,646, data 21% of 10,051, media 35% of 2,120, images 35% of 4,102. Most files cluster between 1 and 10 downloads, with long right tails past 100. Panel b: ridgeline plot of downloads per paper by journal, log scale, with dashed median lines; Psychological Science is highest, then JESP, JML and Cognition. Panel c: stacked bars showing, for documents, data and code separately, the share of papers by download band (0, 1–10, 11–100, more than 100) in 2015, 2020 and 2025. The share exceeding 100 downloads falls sharply over time in all three types, from roughly two-thirds in 2015 to a quarter or less in 2025, as the 1–10 band grows.Four-panel figure. Panel a: statistical languages detected among 333 papers with retrievable code — R 88%, SPSS 12%, Stata 4%, SAS 1%. Panel b: code red flags among those 333 papers — 34% hard-code an absolute path, 40% reference a missing file — above documentation among 672 OSF-linked papers — 21% have a README, 30% are documented by README, description or wiki. Panel c: among 562 Elsevier papers with no repository link, 44% (245) host at least one journal supplementary file but only 14% (77) host data, code or an archive. Panel d: composition of those 448 hosted files — documents 52%, data 21%, media 9%, other 7%, archive 6%, code 3%, images 1%. The code panels are green, the journal-supplement panels blue.Coefficient plot (download predictors)

Dot-and-whisker plot of three standardised predictors of OSF download volume, each with a 95% confidence interval. Repository size (number of files) has the largest effect at about 0.76, citations about 0.38, and altmetric attention about 0.12. All three intervals sit entirely above zero, so each predicts more downloads, with repository size roughly twice the effect of citations and six times that of attention. X-axis: standardised effect, −0.2 to 1.0.
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Asier Moneva @asiermoneva.com · 31/08/2026
Last chance to sign up! 👇🏼
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David Buil-Gil @davidbuil.bsky.social · 18/08/2026
Are you around Manchester on 7 October? We've invited @iainbrennan.bsky.social to deliver a public seminar at @criminologyuom.bsky.social titled “Focused deterrence: Evaluating America's most successful violence intervention in an English context”. Registrations: eventbrite.co.uk/e/prof-iain-...
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Andy Wheeler @crimede-coder.bsky.social · 04/08/2026
Hallucinations in peer review research are a current major problem. It signals a grave lack of care by researchers, and should trigger more scrutiny of the claims therein. VerusCite is a tool to extract and verify citations in academic articles. Try it out at veruscite-data.com
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Nettlecake @nettlecake.bsky.social · 03/08/2026
Brilliant letter from Stuart Thompson to Jeremy Clarkson about his comments that benefit claimants should write weekly thank you letters to tax payers detailing how they spend their benefits each week.
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Ben Collier @susansegfault.bsky.social · 29/07/2026
Reposting recent paper - soon to release new version updating for period between Jan - but again, majority of cybercrime underground are gaining next to no technical capacity/sophistication uplift from GenAI, mostly logistics automation and productivity tool for the experts arxiv.org/pdf/2603.29545
arxiv.org
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Jamie Cummins @jamiecummins.bsky.social · 14/07/2026
Today we launch the first stable release of RegCheck: v1.0.0. RegCheck makes it easier and quicker to compare study registrations to published papers for consistency - something we know is important in principle, but rarely done in practice. A 🧵 on what's new: regcheck.app
regcheck.app
RegCheck
RegCheck is an AI tool to compare preregistrations with papers instantly.
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European Network for Open Criminology @opencriminology.bsky.social · 14/07/2026
📢 Interested in collaborative replication, open science, and research methods in criminology? Join us at the inaugural meeting of #CRIMLabs, a new international Many Labs initiative, at @opencriminology.bsky.social pre-conference meeting (9 Sept 2026). Details in the leaflet 👇
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Alex Trinidad @alextrinidad.eurosky.social · 14/07/2026
⏰A quick reminder that nominations are closing soon! Submit your nomination before the deadline (16/07/2026)!
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Dr Amanda Holt @amandaholt.bsky.social · 07/07/2026
Summer Sale! Policy Press are offering 50% off my recent (2025) second edition of 'Adolescent to Parent Abuse' book with code BUP07. Now only £12.50 policy.bristoluniversitypress.co.uk/adolescent-t...
policy.bristoluniversitypress.co.uk
Adolescent-to-Parent Abuse
Adolescent-to-Parent Abuse - Current Understandings in Research, Policy and Practice; Since publication of the first edition, awareness of, and interest in, adolescent-to-parent abuse has risen consid...
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Charles C. Lanfear @clanfear.bsky.social · 30/06/2026
Now at JDLCC: @oliveiratr.bsky.social and I's accessible (but opinionated) guidance on testing theories with reciprocal effects using panel models. We argue for centering theory, making sure your data can answer your question, and defaulting to robust estimators. link.springer.com/article/10.1...
Reciprocal causal relationships are a common feature of criminological theories. For example, stable employment may reduce offending while offending may lead to unemployment, and perceived disorder may increase fear of crime while fear of crime may increase sensitivity to signs of disorder. When multiple observations over time are available, cross-lagged panel models are commonly used to estimate these reciprocal effects. Yet this is often done without careful attention to how they map on to the theoretical process they are meant to capture or whether key assumptions of the models are satisfied. This may result in estimates that are not substantively meaningful or are biased or even reversed in sign. Reciprocal relationships also pose challenges for causal assumptions based on graphical tools; theories that posit reciprocal causation often rely on underlying macro–micro mechanisms not explicitly represented in empirical models. We provide guidance on how to align theory, model specification, and choice of estimator, illustrated with two motivating examples: the relationship between employment and offending and the relationship between perceived disorder and fear of crime. We distinguish theoretical reciprocality—in which feedback processes are of substantive interest—from reverse causality—in which reciprocal processes are a nuisance threatening identification of an effect of interest—and discuss three common issues for cross-lagged panel models: unobserved time-stable heterogeneity, improperly specified temporal order, and insufficient variation over time. We conclude by reminding researchers of the importance of aligning methods with theory in longitudinal research.
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Nick Huntington-Klein @nickchk.com · 23/06/2026
I have been doing econometrics and data science consulting in academia and the private sector for a decade, and for the first time in a while I am open to new clients. If you are looking for someone to help you with data stuff, drop me a line! nickchk.com/consulting.h...
nickchk.com
Nick Huntington-Klein Consulting | Data, Statistics & Economics
Consulting in data analysis, econometrics, and statistical software. Academic and private-sector experience. Flexible hours and fast turnarounds.
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Jose Pina-Sánchez 🇪🇺 @jpinasanchez.eurosky.social · 19/06/2026
I will be talking about how government data transformed sentencing research in England & Wales, how it did not, and what else we (academics) can do besides bemoaning data limitations"
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Jose Pina-Sánchez 🇪🇺 @jpinasanchez.eurosky.social · 19/06/2026
A few places left for the British Society of Criminology's Criminal Justice Statistics Network Annual Symposium 2026, “The Changing Landscape of Criminal Justice Data” next Tuesday in London, in collaboration with the Centre for Criminal Justice Studies, www.eventbrite.co.uk/e/bcs-crimin...
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Alex Stevens @profalexstevens.bsky.social · 13/06/2026
Coverage of our #PDDevaluation in @theguardian.com. Find out more at the National Symposium on Police-led Drug Diversion @sheffielduni.bsky.social this coming Thursday. www.theguardian.com/uk-news/2026...
theguardian.com
Drug diversion schemes cut reoffending rates more than prosecution, study says
Exclusive: Research in England shows people a third less likely to reoffend under decriminalisation-style schemes
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Jose Pina-Sánchez 🇪🇺 @jpinasanchez.eurosky.social · 08/06/2026
Last Friday I spoke to Henry Bonsu (Times Radio) about the preposterous claim that White British are discriminated against by the criminal justice system. www.thetimes.com/radio/show/2... From 19:45 to 25:59 #TwoTierPolicing
thetimes.com
Henry Bonsu | Times Radio | The Times and the Sunday Times
Listen to Times Radio live for the latest breaking news, expert analysis and well-informed discussion covering the biggest stories of the day.
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Tyler Horan @tylerhoran.bsky.social · 28/05/2026
Essex looking for two sociology lecturers - one data science, one criminology focused vacancies.essex.ac.uk/tlive_webrecr…
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Jose Pina-Sánchez 🇪🇺 @jpinasanchez.eurosky.social · 15/05/2026
New registered report with @alextrinidad.eurosky.social & @ianloader.bsky.social, under review at PCI RR: "Road Violence and Perceptions of Safety among Pedestrians and Cyclists" We test if the fear of crime paradox applies to the road violence context. We welcome feedback, osf.io/preprints/so...
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Jill McCorkel @jillmccorkel.bsky.social · 12/05/2026
Great funded opportunity for students interested in pursuing PhD in law/criminology in Ireland. Deadline is June 9. Info: www.maynoothuniversity.ie/sites/defaul...
maynoothuniversity.ie
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Criminology, Sociology & Policing, Hull. @crimsochull.bsky.social · 08/05/2026
COME WORK WITH US! We are hiring for a fixed term Lecturer in Criminology. Deadline 4 June. Reach out if you have any questions about the role or the department. www.jobs.ac.uk/job/DRL957/l...
jobs.ac.uk
Lecturer in Criminology at University of Hull
An opportunity for an academic position as a Lecturer in Criminology is available, as advertised on jobs.ac.uk. Apply now and explore other academic job openings.
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Iain Brennan @iainbrennan.bsky.social · 01/05/2026
Interesting session - crossovers to clusters of prison deaths in custody
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Scottish Institute for Policing Research @the-sipr.bsky.social · 01/05/2026
📊 Webinar: Statistical issues in police investigations (incl. healthcare death clusters) 📅 12 June | ⏰ 10–11:30 GMT 🎤 Hutton & Wilson | Chair: McVie Exploring statistical challenges in policing + lessons from the Lucy Letby case 👉 bit.ly/4eryDfj
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Youth Endowment Fund @youthendowmentfund.org.uk · 22/04/2026
Focused deterrence programmes operate at the sharp edge of violence prevention — but race equity doesn’t embed itself. In this blog, Laurelle Brown shares delivery-level learning from Nottingham on what it really takes to move from intent to implementation. youthendowmentfund.org.uk/embedding-ra...
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Georgia Tomova @georgiatomova.bsky.social · 22/04/2026
Do you ever claim to be interested in the "association" between variables? This talk may be for you! @jeremylabrecque.bsky.social will explain when and why such associational language is not appropriate and why causal language should be used instead. Register here: ucl.zoom.us/meeting/regi...
Causal Inference Interest Group Seminar with Jeremy Labrecque - 11th May 2026 3pm BST
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Youth Endowment Fund @youthendowmentfund.org.uk · 22/04/2026
Nearly one in three young people who offend go on to reoffend. We're expanding @theskillmill.bsky.social, a social enterprise that provides young people who’ve offended with paid work- with evaluation from the ICF. youthendowmentfund.org.uk/news/paid-wo...
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Katie Corker @katiecorker.bsky.social · 07/04/2026
The governing body for 14 Dutch universities (UNL) has published a "Vision on Publication Culture" that is so inspiring and forward thinking. Worth a read for those trying to changes publishing and research assessment practices. Take a read: www.universiteitenvannederland.nl/files/public...
Screen shot of section 1.1 of the report "vision for a new publication culture"
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Brian Nosek @briannosek.bsky.social · 01/04/2026
How do we know if research is credible? In Abatayo et al., 86 of us combined evidence across the SCORE program including replicability, reproducibility, robustness, human and machine assessments to understand relationships among many potential credibility measures. 1/ Paper: osf.io/preprints/me...
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Youth Endowment Fund @youthendowmentfund.org.uk · 01/04/2026
Continuing from this morning’s SAFE podcast. Laurelle Brown’s latest blog looks at what it really takes to embed race equity into Focused Deterrence programmes. It’s not an add-on, it’s about relationships, data, and rethinking how decisions are made. youthendowmentfund.org.uk/building-rac...
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European Network for Open Criminology @opencriminology.bsky.social · 12/03/2026
Reminder! We are seeking discussants for a roundtable on repeatability of criminological research at #eurocrim2026 @esc-eurocrim.bsky.social Inform us before 20 March if you are interested @asiermoneva.com @alextrinidad.eurosky.social @isabellevdv.bsky.social
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Iain Brennan @iainbrennan.bsky.social · 10/03/2026
Scotland experienced similar reductions in violence to those described in this great @vitalcitynyc.bsky.social article. If you want to learn about that process and maybe look into the future of US violence prevention, sign up for this talk: Wednesday 2pm *GMT* www.eventbrite.co.uk/e/the-scotti...
eventbrite.co.uk
“The Scottish Violence Reduction Unit (SVRU): Past, Present and Future”
Join the first session of our CV3 Speaker Series with Jimmy Paul, Head of Scotland’s Violence Reduction Unit.
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Iain Brennan @iainbrennan.bsky.social · 10/03/2026
This Wednesday 2-3.30pm GMT @crimsochull.bsky.social: Jimmy Paul (Head of Scotland's Violence Reduction Unit) discussing 20 yrs of violence reduction in Scotland and the challenges of sustained violence reduction. www.eventbrite.co.uk/e/the-scotti...
eventbrite.co.uk
“The Scottish Violence Reduction Unit (SVRU): Past, Present and Future”
Join the first session of our CV3 Speaker Series with Jimmy Paul, Head of Scotland’s Violence Reduction Unit.
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Youth Endowment Fund @youthendowmentfund.org.uk · 09/03/2026
📣 Join the Youth Endowment Fund as a Senior Grants & Commissioning Manager. Be part of our mission in preventing children and young people becoming involved in violence. Closing date: 17/3/26, 12PM. 📌Apply here: youthendowmentfund.org.uk/careers/ #NGOjobs #Hiring
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David Buil-Gil @davidbuil.bsky.social · 02/03/2026
Other interesting things: China is now the second country with most accesses to pubs (it used to be UK; now third). Philippines has surpassed Canada as fourth. India has surpassed Germany and France. And Nigeria and Kenya have surpassed Netherlands. This is truly a service to global criminology 🌎🌍🌏
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David Buil-Gil @davidbuil.bsky.social · 02/03/2026
Every now and then I like to have a look at the stats for @crimrxiv.com to see how we’ve been doing. ChatGPT has now solidly surpassed LinkedIn, X and Bing as the third top referrer (behind Google and Google Scholar). One can only assume it will continue to climb the rankings in the coming years
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Ben Bradford @benbradford.bsky.social · 25/02/2026
There are still places left for the upcoming LSE/UCL event 'Police and People in London - What's changed in 40 years'. Afternoon of the 6th March at LSE. Come along - it'll be fun! www.lse.ac.uk/social-polic...
lse.ac.uk
Mannheim Centre for Criminology | Event about police and policing in London
This afternoon event draws together new research about police and policing in London, and reflects on whether intervening efforts to strengthen public trust have delivered.
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Overly.Honest.Editor @editoratlarge.bsky.social · 24/02/2026
BSky hive mind, please send help. I've recently (in 2026) seen paper about how people's action on given advice doesn't change much even if they learn advice was given by LLM. Anyone can signpost this, pretty please? #AcademicSky
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Iain Brennan @iainbrennan.bsky.social · 24/02/2026
"Successes from prevention are statistical rather than personal." Nice article from @johnkroman.bsky.social on violence prevention and its challenges in the US
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Megan Stevenson @meganstevenson.bsky.social · 13/02/2026
Robynn Cox and I have a new paper! It's about the history of predictive algorithms in criminal justice, back in the 1920s-1950s. This paper is the result of five years of research and we're so happy to see it out. 🧵 1/
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UK Reproducibility Network @ukrepro.bsky.social · 12/02/2026
Just released: UKRN Working Paper 9! can open research practices be monitored automatically across UK universities - the answer is: promising Lots of potential (intro, pre-registration + PIDs ), but metadata chaos is still a big blocker. ukrn.blogs.bristol.ac.uk/2026/02/12/u...
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Jose Pina-Sánchez 🇪🇺 @jpinasanchez.eurosky.social · 13/02/2026
Preprint available here: jmpinasanchez.github.io/sentencing.h... #sentencing #punitiveness #disparities
jmpinasanchez.github.io
Sentencing
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Jose Pina-Sánchez 🇪🇺 @jpinasanchez.eurosky.social · 12/02/2026
'From Principles to Populism: Sentencing in England and Wales', available now ahead of print in Crime and Justice vol. 55, www.journals.uchicago.edu/doi/10.1086/... in which Julian Roberts and I provide an introduction to sentencing in E&W, and review recent developments in policy and research.
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Alex Sutherland @criminologist.bsky.social · 11/02/2026
JOB: Quantitative criminology lectureship at Cardiff krb-sjobs.brassring.com/TGnewUI/Sear...
krb-sjobs.brassring.com
Lecturer in Quantitative Criminology - Cardiff University - Job Details
Job Details: Lecturer in Quantitative CriminologyCardiff University School of Social Sciences is seeking to recruit a Lectu
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Ryan Briggs @ryancbriggs.net · 11/02/2026
I have a new paper. We look at ~all stats articles in political science post-2010 & show that 94% have abstracts that claim to reject a null. Only 2% present only null results. This is hard to explain unless the research process has a filter that only lets rejections through.
It must be very hard to publish null results
Publication practices in the social sciences act as a filter that favors statistically significant results over null findings. While the problem of selection on significance (SoS) is well-known in theory, it has been difficult to measure its scope empirically, and it has been challenging to determine how selection varies across contexts. In this article, we use large language models to extract granular and validated data on about 100,000 articles published in over 150 political science journals from 2010 to 2024. We show that fewer than 2% of articles that rely on statistical methods report null-only findings in their abstracts, while over 90% of papers highlight significant results. To put these findings in perspective, we develop and calibrate a simple model of publication bias. Across a range of plausible assumptions, we find that statistically significant results are estimated to be one to two orders of magnitude more likely to enter the published record than null results. Leveraging metadata extracted from individual articles, we show that the pattern of strong SoS holds across subfields, journals, methods, and time periods. However, a few factors such as pre-registration and randomized experiments correlate with greater acceptance of null results. We conclude by discussing implications for the field and the potential of our new dataset for investigating other questions about political science.
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European Network for Open Criminology @opencriminology.bsky.social · 10/02/2026
New piece from us in the @esc-eurocrim.bsky.social newsletter, on why Criminology is lagging behind in Open Science and steps needed from the ESC to promote #openscience. escnewsletter.org/archive/crim... With Torbjørn Skardhamar and Jakob Demant
escnewsletter.org
Esc Newsletter | Archive
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MORPHSS @morphss.bsky.social · 09/02/2026
NEW resource for open research in the arts, humanities and qualitative social sciences: The MORPHSS catalogue documents 30 open research practices in AHSS disciplines, with detailed descriptions, examples, and suggested resources and further reading. catalogue.morphss.work
Screenshot of the MORPHSS catalogue
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MORPHSS @morphss.bsky.social · 19/01/2026
👀In a few weeks' time we'll be launching our NEW catalogue of open research practices in the arts, humanities and qualitative social sciences - ~30 open research practices across AHSS disciplines that we've documented so far, with detailed descriptions, examples and resources.
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Asier Moneva @asiermoneva.com · 03/02/2026
This year featuring the great @sandyschumann.bsky.social, recipient of the @opencriminology.bsky.social 's Open Science Award with a talk on... yes, you guessed correctly: #OpenScience!
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Dr Amanda Holt @amandaholt.bsky.social · 02/02/2026
Excellent thread here about domestic homicide 👇
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Iain Brennan @iainbrennan.bsky.social · 02/02/2026
If you're interested in big data and/or the relationship between school and crime, come along to this webinar on 18th Feb, 1-3pm www.eventbrite.co.uk/e/from-schoo...
eventbrite.co.uk
From School Absences and Exclusions to Crime: Evidence and Implications
This webinar marks the conclusion of an ADR UK Fellowship examining the longitudinal relationship between school absences and crime.
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