JASSS

#JASSS is expanding its digital presence! 🌍 Join our community on LinkedIn, BlueSky, and YouTube to stay updated on new research, calls, and initiatives🚀 🔗In: shorturl.at/zu0cu 🔗BS: shorturl.at/haHgV 🔗YT: shorturl.at/tFHjm

The same voting reform can polarize one democracy and moderate another. It comes down to system size. Thomas Mustillo (@KeoughGlobalND, @KelloggInst) breaks down his new #JASSS paper on party competition under costly voting🎥youtu.be/lWkAIoc_hIE

Abstainers live at the extremes, not the centre. A new #ABM shows that voting costs reshape entire #PartySystem dynamics, driving #polarization in small party systems while eroding citizen representation in larger ones Read the full #OA article in #JASSS: jasss.org/29/3/4.html

Why is it so hard to stop eating #UltraProcessedFoods? The simple truth is that dieting alone will not do it. A new #ABM study shows that only drastically reducing UPF availability can reverse learned food preferences. Read the full #OA article in #JASSS: jasss.org/29/3/3.html

Where does inequality come from, before states, markets, or agriculture? New #ABM reveals how stratification emerges in hunter-gatherer societies, driven by skill, luck, greed, and what a society chooses to reward. Full #OpenAccess article in #JASSS 👉jasss.org/29/3/2.html

It looks like our editor @squazzoni took some days off. Don't expect prompt replies in the next couple of days!

System-level interventions can ignite cascades of change. They can also collapse under mis-targeting. New #JASSS paper by @gaveltri models the tradeoff and proposes a portfolio approach to scale power without losing the safety net Read #OpenAccess here: jasss.org/29/3/1.html

📢 #JASSS Issue 3 (Vol. 29) is out. How does order, inequality, and change emerge from individual decisions? From behavioral policy to ancient societies to global trade — this issue explores it all through agent-based modeling. Read here 👇 jasss.org/JASSS.html

🔎 Sneak peek from the forthcoming #JASSS issue: #Nudge individuals, or reshape the systems around them? Wrong question. @gaveltri shows it's a transformation–robustness tradeoff 👇 youtube.com/watch?v=4eY_Qb… #ABM #BehavioralScience #PublicPolicy

Who is most at risk in aged care facilities, and when? A new #ABM study builds institutional #ContactMatrices from staff shifts and care routines, revealing where #InfectiousDisease transmission truly concentrates. Read the full #OA article in #JASSS: jasss.org/29/2/7.html

Not all nodes are equal — yet #Network models treat them as if they were. A new study adapts the Configuration Model to embed node attributes into #NetworkStructure, with a tenfold increase in #ClusteringCoefficient. Read the full #OA article in #JASSS: jasss.org/29/2/6.html

More realistic #AgentBasedModels are not always better: a new study shows that richer agent #Heterogeneity undermines #ModelCalibration reliability — reopening the KISS vs KIDS debate on new empirical ground. Read the full #OpenAccess article in #JASSS: jasss.org/29/2/5.html

No protests in the streets — yet resistance grows. A new #ABM study models how #OnlineProtest dynamics on #SocialMedia quietly accumulate dissent potential among ordinary users even under #AuthoritarianRepression. Read the full #OA article in #JASSS: jasss.org/29/2/4.html

Bad news travels fast — but how exactly? A new #ABM study combines #DeepLearning sentiment tracking and an epidemiological model to map how negativity about corporations spreads across Reddit's #FinancialCommunities. Read the full #OA article in #JASSS: jasss.org/29/2/3.html

What drives households to adopt rooftop #SolarPV? A new #ABM study reveals that it is not just money —#socialnorms and #opiniondynamics matter more, with surprising insensitivity to #network structure. Read the full #OpenAccess article in #JASSS: jasss.org/29/2/2.html

No algorithms, no biased media, no hostile users — yet #polarization still emerges. A new #ABM study extending Axelrod's model shows how rewarding interactions alone fuel a self-reinforcing "rich-get-richer" dynamic. Read the full #OA article in #JASSS: jasss.org/29/2/1.html

Although we love #archeaologists, we are trying to do our best to avoid this! #peerreview #review #journals #reviewer

#JASSS Vol.29 Issue 2 is out! New research explores online polarization, authoritarian repression, solar PV adoption & financial sentiment spread through the lens of #AgentBasedModeling. Find out what #ComputationalSocialScience reveals about society 👉 jasss.org

Can #socialsolidarity prevent agro-pastoral collapse? Paul Chapron & colleagues co-designed an #ABM with Senegalese farmers to find out. Spoiler: remove parcel lending & food sharing, and the system collapses #CompanionModeling #participatory #simulation youtu.be/gucSiwhHqW0

Real-world #Policy problems are hard to capture with traditional models, but a #generative approach may change the game. GPLab combines #LLMs and #ABM to advance #computationalsocialscience for public decision support. Read the full #OA article in #JASSS: jasss.org/29/1/6.html

How long before #OpioidPolicy actually reduces deaths? OPOSim #ABM simulates #OpioidUse dynamics in #NorthCarolina to test #prevention strategies and reveals how small shifts can change #epidemic trajectories Read the full #OpenAccess article in #JASSS: jasss.org/29/1/5.html