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Ben Jonathan Wagner

@benjwagner.bsky.social

I´m a postdoc with Tobias Hauser @Developmental Computational Psychiatry lab and Peter Dayan @mpicybernetics.bsky.social #Dopamine #DecisionMaking #ReinforcementLearning #ActiveInference #IntertemporalChoice #BrainExplorerApp

33 Posts285 Follower600 Folgt
Lénárd Döme@lenarddome.bsky.social · 3w ago

📢 Out now in PLOS Comp Biol: **cpm** — a Python library for theory-driven modelling in computational psychiatry. No scikit-learn for mechanistic cognitive models — so we built one: RL, prospect-theory & metacognition, hierarchical Bayes, and as many more as you can code 🔗 doi.org/10.1371/jour...

cpm: A python library for theory-driven modelling in computational psychiatry

Author summary Computational psychiatry is a field that makes extensive use of computational methods to understand mental health. In this field and related disciplines, there is a strong need to desig...

doi.org

Dil Korkmaz@dil-k.bsky.social · 2mo ago

We found that green space exposure was associated with: • lower subjective stress • higher subjective well-being • reduced cardiac arousal These findings underscore the public health potential of urban green infrastructure for preventing stress-related mental health conditions.

Ben Jonathan Wagner@benjwagner.bsky.social · 2mo ago

We @saschafrolich.bsky.social @stefankiebel.bsky.social investigated how habitual- and goal-directed control interact when actions must be made under time pressure. www.nature.com/articles/s44...

Context-dependent interaction between goal-directed and habitual control under time pressure - Communications Psychology

This study investigates the dynamic interplay between habitual and goal-directed control. Using RL and drift-diffusion modelling, we show that these systems interact in a context-dependent manner: hab...

nature.com

Communications Psychology@commspsychol.nature.com · 3mo ago

www.nature.com/articles/s44... New research Article by @benjwagner.bsky.social @saschafrolich.bsky.social Sarah Schwöbel, Michael N. Smolka & @stefankiebel.bsky.social in the journal (in Press)

Context-dependent interaction between goal-directed and habitual control under time pressure - Communications Psychology

This study investigates the dynamic interplay between habitual and goal-directed control. Using RL and drift-diffusion modelling, we show that these systems interact in a context-dependent manner: hab...

nature.com

Ben Jonathan Wagner@benjwagner.bsky.social · 6mo ago

Our book chapter on intertemporal choice in Neuroeconomics: Core Topics and Current Directions is now available. We review individual differences, dopamine, and methodological approaches from model-agnostic analyses to integrated discounting drift-diffusion models. link.springer.com/chapter/10.1...

Intertemporal Choice

Intertemporal choice involves decisions between rewards available at an earlier point in time and delayed rewards (delay discounting). Such decisions are common in everyday life, influencing outcomes ...

link.springer.com

Lénárd Döme@lenarddome.bsky.social · 7mo ago

🎉 psp just hit 14K+ downloads! Our #rstats package for parameter space partitioning powered our work on g-distance, model comparison, irrationality, and heterogeneity: doi.org/10.1037/rev0... CRAN: cran.r-project.org/package=psp

psp: Parameter Space Partitioning MCMC for Global Model Evaluation

Implements an n-dimensional parameter space partitioning algorithm for evaluating the global behaviour of formal computational models as described by Pitt, Kim, Navarro and Myung (2006) &lt;<a href="h...

cran.r-project.org

Ben Jonathan Wagner@benjwagner.bsky.social · 8mo ago

I think this paper is a good read from a neuroscience perspective on how repetition and goal-directed reward learning are intertwined, resulting in short-cuts that correspond to decision biases as a function of task complexity. www.cell.com/trends/neuro...

Interacting cortico-basal ganglia-thalamocortical loops shape behavioral control through cognitive maps and shortcuts

Control of behavior is often explained in terms of a dichotomy, with distinct neural circuits underlying goal-directed and habitual control, yet accumulating evidence suggests these processes are deep...

cell.com

Kelly Donegan@kellydonegan.bsky.social · 8mo ago

Out now in Translational Psychiatry! www.nature.com/articles/s41...

Model-based planning is unaffected by ketamine, antidepressant and internet delivered cognitive behavioural therapy treatments in depression - Translational Psychiatry

Translational Psychiatry - Model-based planning is unaffected by ketamine, antidepressant and internet delivered cognitive behavioural therapy treatments in depression

nature.com

Kelly Donegan@kellydonegan.bsky.social · 2y ago

Null findings are important ‼️ Excited to share my latest work finding model-based planning does NOT improve following ketamine 💉, antidepressant 💊, or iCBT 👩‍💻 treatments 🧵👇🏻

Ben Jonathan Wagner@benjwagner.bsky.social · 8mo ago

Very happy that this is out www.nature.com/articles/s44.... Together with @stefankiebel.bsky.social we show that decision biases in context-dependent decision making, previously attributed to different forms of value normalization, are very well explained by habit-like action repetition.

Action repetition biases choice in context-dependent decision-making - Communications Psychology

This study shows that decision biases previously attributed to value normalization (e.g. relative value learning or range normalization) are better explained by action repetition. Repeating an action ...

nature.com

A
annecollins.bsky.social@annecollins.bsky.social · 9mo ago

My paper is out! Computational modeling of error patterns during reward-based learning show evidence that habit learning (value free!) supplements working memory in 7 human data sets. rdcu.be/eQjLN

A habit and working memory model as an alternative account of human reward-based learning

Nature Human Behaviour - In this study, Collins proposes an alternative dual-process (working memory and habit) model of reinforcement learning in humans.

rdcu.be

Lénárd Döme@lenarddome.bsky.social · 11mo ago

New models (three variants of Prospect Theory), new features (more ways to manage parameters, more model components to use), and of course bug fixes. If you want to make your computational modelling reproducible and robust, check out and install the new version of *cpm*: github.com/DevComPsy/cp...

Release v0.23.18 - New Prospect Models, improved parameter management, and a few bug fixes · DevComPsy/cpm

Install You can install the new release straight from the PyPi repository: pip install cpm-toolbox Added Add input validation and error handling in all cpm.optimisation.minimise methods Add test u...

github.com

Communications Psychology@commspsychol.nature.com · last yr.

Using a sequential decision making task and cognitive modelling, this study shows that human decisions are best explained by a combination of repetition bias and goal directed reward-based behavior. @benjwagner.bsky.social www.nature.com/articles/s44...

Cognitive computational model reveals repetition bias in a sequential decision-making task - Communications Psychology

Using a sequential decision making task and cognitive modeling, we show that human decisions are best explained by a combination of repetition bias and goal directed reward-based behavior.

nature.com

Ben Jonathan Wagner@benjwagner.bsky.social · 2y ago

In our new preprint @saschafrolich.bsky.social , @MichaelSmolka & @StefanKiebel on how "habits interact with goal-directed behavior under time pressure", we found that habitual behavior varies as a function of context and repetition 🔄 www.biorxiv.org/content/10.1...

Context-Dependent Interaction Between Goal-Directed and Habitual Control Under Time Pressure

Habits are an important aspect of human behaviour. Habits are reflexive, inflexible, and fast, in contrast to goal-directed behaviour which is reflective, flexible, and slow. Current theories assume t...

biorxiv.org