Evidence map›Paper›PMID 37012365›Full record

ArticleNature human behaviour2023

Rethinking model-based and model-free influences on mental effort and striatal prediction errors.

Carolina Feher da Silva, Gaia Lombardi, Micah Edelson, Todd A Hare

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In one paragraph

Article in Nature human behaviour, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

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  13. Evidence for shallow cognitive maps in schizophrenia.Cognitive, affective & behavioral neuroscience · 2025
    Article
  14. Model-based algorithms shape automatic evaluative processing.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  15. Article
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  20. The construction and use of cognitive maps in model-based control.Journal of experimental psychology. General · 2024
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Carolina Feher da SilvaSchool of Psychology, University of Nottingham, Nottingham, UK. c.feherdasilva@surrey.ac.uk.ORCID 0000-0002-4137-0847
Gaia LombardiZurich Center for Neuroeconomics, Department of Economics, University of Zurich, Zurich, Switzerland.
Micah EdelsonZurich Center for Neuroeconomics, Department of Economics, University of Zurich, Zurich, Switzerland.
Todd A HareZurich Center for Neuroeconomics, Department of Economics, University of Zurich, Zurich, Switzerland. todd.hare@econ.uzh.ch.ORCID 0000-0002-0260-2772

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A standard assumption in neuroscience is that low-effort model-free learning is automatic and continuously used, whereas more complex model-based strategies are only used when the rewards they generate are worth the additional effort. We present evidence refuting this assumption. First, we demonstrate flaws in previous reports of combined model-free and model-based reward prediction errors in the ventral striatum that probably led to spurious results. More appropriate analyses yield no evidence of model-free prediction errors in this region. Second, we find that task instructions generating more correct model-based behaviour reduce rather than increase mental effort. This is inconsistent with cost-benefit arbitration between model-based and model-free strategies. Together, our data indicate that model-free learning may not be automatic. Instead, humans can reduce mental effort by using a model-based strategy alone rather than arbitrating between multiple strategies. Our results call for re-evaluation of the assumptions in influential theories of learning and decision-making.

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RewardVentral StriatumHumansLearning

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.