Evidence map›Paper›PMID 29808011›Full record

ArticleNPJ schizophrenia2018

Impairment in delay discounting in schizophrenia and schizoaffective disorder but not primary mood disorders.

Hannah E Brown, Kamber L Hart, Leslie A Snapper, Joshua L Roffman, Roy H Perlis

Abstract read
In one paragraph

Article in NPJ schizophrenia, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
–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

19 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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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.

Hannah E BrownDepartment of Psychiatry, Center for Quantitative Health, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. hebrown@partners.org.
Kamber L HartDepartment of Psychiatry, Center for Quantitative Health, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
Leslie A SnapperDepartment of Psychiatry, Center for Quantitative Health, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
Joshua L RoffmanSchizophrenia Clinical and Research Program, Massachusetts General Hospital, Boston, MA, USA.
Roy H PerlisDepartment of Psychiatry, Center for Quantitative Health, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.ORCID http://orcid.org/0000-0002-5862-6757

Funding

Research ProjectP50MH106933 · NIMH · HARVARD MEDICAL SCHOOL · PI KOHANE, ISAAC S. · 2014 to 2018
$17.0M
NIMH NIH HHS P50 MH106933
6 · The paper itself

Abstract

A measure of planning and impulse control, the delay-discounting (DD) task estimates the extent to which an individual decreases the perceived value of a reward as the reward is delayed. We examined cross-disorder performance between healthy controls (n = 88), individuals with bipolar disorder (n = 23), major depressive disorder (n = 43), and primary psychotic disorders (schizophrenia and schizoaffective disorder; n = 51) on the DD task (using a $10 delayed larger reward), as well as the interaction of DD scores with other symptom domains (cognition, psychosis, and affect). We found that individuals with schizophrenia and schizoaffective disorder display significantly greater rates of discounting compared to healthy controls, while individuals with a primary mood disorder do not differ from healthy controls after adjustment for IQ. Further, impairment in working memory is associated with higher discounting rates among individuals with schizophrenia and schizoaffective disorder, but cognitive dysfunction alone does not account for the extent of impairment in DD. Taken together, these results suggest an impaired ability to plan for the future and make adaptive decisions that are specific to individuals with psychotic disorders, and likely related to adverse functional outcomes. More generally, this work demonstrates the presence of variation in impulsivity across major psychiatric illnesses, supporting the use of a trans-diagnostic perspective.

Identifiers

PMID29808011
PMCPMC5972152

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Registered trials

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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.