Evidence map›Paper›PMID 23612436›Full record

Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2013

Working memory capacity predicts effects of methylphenidate on reversal learning.

Marieke E van der Schaaf, Sean J Fallon, Niels Ter Huurne, Jan Buitelaar, Roshan Cools

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
3.4field-weighted citation impact, top 7% of its field
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

44 citing papers in PubMed, 77 citations in OpenAlex.

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  7. Activation of D1 receptors affects human reactivity and flexibility to valued cues.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
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  15. Alzheimer's Disease Pathologies Affect Dopaminergic Neural Mechanisms of Memory.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
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  16. Concomitant activation of DResearch square · 2026
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  17. Concomitant activation of DDiscover pharmaceutical sciences · 2026
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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

5 authors at 2 institutions in 1 country.

Marieke E van der SchaafDepartment of Psychiatry, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. Marieke.vanderschaaf@donders.ru.nl
Sean J Fallon
Niels Ter Huurne
Jan Buitelaar
Roshan Cools
Radboud University Nijmegen · NLDutch Expert Centre for Screening · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Increased use of stimulant medication, such as methylphenidate, by healthy college students has raised questions about its cognitive-enhancing effects. Methylphenidate acts by increasing extracellular catecholamine levels and is generally accepted to remediate cognitive and reward deficits in patients with attention deficit hyperactivity disorder. However, the cognitive-enhancing effects of such 'smart drugs' in the healthy population are still unclear. Here, we investigated effects of methylphenidate (Ritalin, 20  mg) on reward and punishment learning in healthy students (N=19) in a within-subject, double-blind, placebo-controlled cross-over design. Results revealed that methylphenidate effects varied both as a function of task demands and as a function of baseline working memory capacity. Specifically, methylphenidate improved reward vs punishment learning in high-working memory subjects, whereas it impaired reward vs punishment learning in low-working memory subjects. These results contribute to our understanding of individual differences in the cognitive-enhancing effects of methylphenidate in the healthy population. Moreover, they highlight the importance of taking into account both inter- and intra-individual differences in dopaminergic drug research.

Indexed as

Memory, Short-TermCentral Nervous System StimulantsCross-Over StudiesDouble-Blind MethodFemaleHealthy VolunteersHumansMaleMethylphenidatePunishmentReversal LearningRewardYoung AdultCentral Nervous System StimulantsMethylphenidate

Identifiers

PMID23612436
PMCPMC3746683
OpenAlexW2138512458

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.