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

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

Can #AI safeguard a healthy #InfoEcosystem? An #ABM by @quarbby and @KathleenMCarley shows that proactive #Bots outperform reactive #FactChecking in mitigating the spread of #ConspiracyTheories on #SocialMedia. Read the full #OpenAccess article in #JASSS: jasss.org/29/1/4.html

We are mourning the loss of Dr. Jiaqi Ge, a valued Editorial Board member and a kind, constructive voice in our community. Her presence and expertise will be greatly missed by all of us at JASSS. Full tribute: news.jasss.org/remembering-dr…

How do you #model what can’t be measured? This study demonstrates how #ParticipatoryModeling integrates local knowledge and #Calibration to capture hidden social dynamics in complex socio-ecological systems. Read the full #OpenAccess article in #JASSS: jasss.org/29/1/3.html

Why do non-political issues polarize? This #MultiAgentModel with #NetworkHomophily solves the discrepancy between #Simulation and #Empirical findings, showing that #OilSpillPolarization can emerge even among moderates. Read the full #OA article in #JASSS: jasss.org/29/1/1.html

The first 2026 issue of #JASSS has been published today, including 6 new articles and 1 corrigendum. Enjoy the issue! jasss.org/JASSS.html

The #JASSS website just got a major upgrade! 🚀 We have launched brand new dedicated sections for Awards, News, and Videos to highlight the main updates and amazing work happening in our community. Come see what’s new! 💻 jasss.org/JASSS.html

#ABM thrives but fragmented code and reinvented wheels slow progress. We introduce #AGENTBLOCKS, an open #community #platform that shares & improves #ReusableBuildingBlocks to support #Standardization in ABM and beyond. Read #OpenAccess article in #JASSS: jasss.org/28/4/11.html

Structural calibration of ABMs is often overlooked, yet it can dramatically shape model outcomes. We address this by introducing an innovative #InverseModelling #method to #explore & #calibrate #ABM #structures Read the full #OpenAccess article in #JASSS: jasss.org/28/4/10.html

Who should be traced first? An empirically calibrated #ABM shows that #ContactTracing works best when prioritizing influential spreaders—even if identified only via simple proxies like #Age and #HouseholdSize. Read the full #OpenAccess article in #JASSS: jasss.org/28/4/9.html

By fitting an #ABM of #schoolchoice to household-level data, this study reveals unexpected #heuristic #behaviors shaping #SchoolSegregation dynamics and offers a novel #estimation #framework for realistic ABMs. Read the full #OpenAccess article in #jasss: jasss.org/28/4/8.html

How do #PaymentForPerformance reshape care-seeking? An #ABM of childbirth care in #Tanzania links provider incentives, informal fees, peer learning and demand pressure, revealing effects of supply-side change. Read the full #OpenAccess article in #jasss: jasss.org/28/4/7.html

Watch #CompanionModeling in action! Etienne Delay (@Cirad & @esp_dakar) shares how local farmers and stakeholders co-design #TreeProtection and #agroecological strategies in #Senegal’s Groundnut Basin. Insightful #participatory #simulation 🌱👉 youtube.com/shorts/dGg6QAa…

When #tree loss threatens #soils and #food security in #Senegal, the #SAFIRe #participatory #ABM helps communities explore new pathways for #regeneration and reshape #CommunityBased #ResourceManagement. Read the full #OpenAccess article in #jasss: jasss.org/28/4/6.html

Did the #Casarabe Culture truly domesticate the #Amazon? 🌿 New #ABM simulations propose a model of highly localized, intensive #land use driven by environmental 'desirability' & inter-settlement #cooperation. Read the full #OpenAccess article in #jasss: jasss.org/28/4/5.html

MIDAO advances #ABM by showing how specific arguments - not just abstract #socialinfluence - drive #opinion formation and #Innovation adoption. A more realistic, theory-driven perspective on #opiniondynamics. Read the full #OpenAccess article in #jasss: jasss.org/28/4/4.html

Why do a few players dominate #China’s e-retail #market? An #AgentBasedModel demonstrates how small shifts in #consumer risk-taking, pickiness, and #WoM can alter market power in unexpected ways. Read the full #OpenAccess article in #jasss: jasss.org/28/4/3.html

How does deliberation reshape collective judgment? An #AgentBasedModel of the #DoctrinalParadox compares binary voting, belief aggregation, and interaction—revealing when talk helps or deepens contradictions. Read the full #OpenAccess article in #jasss: jasss.org/28/4/2.html