Evidence map›Paper›PMID 27120349›Full record

ArticlePloS one2016

Psychotic Experiences and Working Memory: A Population-Based Study Using Signal-Detection Analysis.

Rodolfo Rossi, Stanley Zammit, Katherine S Button, Marcus R Munafò, Glyn Lewis, Anthony S David

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
4.2field-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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

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  7. Cognitive Dysfunction as a Risk Factor for Psychosis.Current topics in behavioral neurosciences · 2023
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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

6 authors at 6 institutions in 2 countries.

Rodolfo RossiSection of Psychiatry, University School of Medicine Federico II, Naples, Italy.
Stanley ZammitSchool of Social and Community Medicine, University of Bristol, Bristol, United Kingdom.
Katherine S ButtonDepartment of Psychology, University of Bath, Bath, United Kingdom.
Marcus R MunafòUK Centre for Tobacco and Alcohol Studies, School of Experimental Psychology, University of Bristol, Bristol, United Kingdom.
Glyn LewisDivision of Psychiatry, University College London, London, United Kingdom.
Anthony S DavidSection of Cognitive Neuropsychiatry, Institute of Psychiatry, Psychology and Neuroscience, King's College, London, United Kingdom.
Federico II University Hospital · ITKing's College London · GBUK Centre for Tobacco & Alcohol Studies · GBUniversity College London · GBUniversity of Bath · GBUniversity of Bristol · GB

Funding

Medical Research Council G0701503Medical Research Council G0801418Medical Research Council G0901885Medical Research Council G9815508Medical Research Council MC_PC_15018Medical Research Council MC_UU_12013/6Medical Research Council MR/L010305/1Wellcome Trust 102215
6 · The paper itself

Abstract

Psychotic Experiences (PEs) during adolescence index increased risk for psychotic disorders and schizophrenia in adult life. Working memory (WM) deficits are a core feature of these disorders. Our objective was to examine the relationship between PEs and WM in a general population sample of young people in a case control study. 4744 individuals of age 17-18 from Bristol and surrounding areas (UK) were analyzed in a cross-sectional study nested within the Avon Longitudinal Study of Parents and Children (ALSPAC) birth cohort study. The dependent variable was PEs, assessed using the semi-structured Psychosis-Like Symptom Interview (PLIKSi). The independent variable was performance on a computerized numerical n-back working memory task. Signal-Detection Theory indices, including standardized hits rate, false alarms rate, discriminability index (d') and response bias (c) from 2-Back and 3-Back tasks were calculated. 3576 and 3527 individuals had complete data for 2-Back and 3-Back respectively. Suspected/definite PEs prevalence was 7.9% (N = 374). Strongest evidence of association was seen between PEs and false alarms on the 2-Back, (odds ratio (OR) = 1.17 [95% confidence intervals (CI) 1.01, 1.35]) and 3-back (OR = 1.35 [1.18, 1.54]) and with c (OR = 1.59 [1.09, 2.34]), and lower d' (OR = 0.76 [0.65, 0.89]), on the 3-Back. Adjustment for several potential confounders, including general IQ, drug exposure and different psycho-social factors, and subsequent multiple imputation of missing data did not materially alter the results. WM is impaired in young people with PEs in the general population. False alarms, rather than poor accuracy, are more closely related to PEs. Such impairment is consistent with different neuropsychological models of psychosis focusing on signal-to-noise discrimination, probabilistic reasoning and impaired reality monitoring as a basis of psychotic symptoms.

Indexed as

AdolescentCase-Control StudiesCross-Sectional StudiesFemaleHumansLongitudinal StudiesMaleMemory DisordersMemory, Short-TermPsychotic DisordersRisk

Identifiers

PMID27120349
PMCPMC4847914
OpenAlexW2344015904

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.