scholarly journals A meta-analysis of the P3 amplitude in tasks requiring deception in legal and social contexts

2019 ◽  
Vol 135 ◽  
pp. 103564 ◽  
Author(s):  
Anja Leue ◽  
André Beauducel
Keyword(s):  
Meta Analysis ◽  
Social Contexts ◽  
P3 Amplitude

scholarly journals A meta-analysis of the P3 amplitude in tasks requiring deception in legal and social contexts

2017 ◽  
Author(s):  
Anja Leue ◽  
André Beauducel
Keyword(s):  
Cognitive Processes ◽  
Meta Analysis ◽  
A Priori ◽  
Large Population ◽  
Mental Effort ◽  
Social Contexts ◽  
Event Related Potential ◽  
Show Evidence ◽  
P3 Amplitude ◽  
Legal Contexts

In deception tasks the parietal P3 amplitude of the event-related potential indicates either recognition of salient stimuli (larger P3 following salient information) or mental effort (negative or smaller P3 following demanding information). This meta-analysis (k = 77) investigated both cognitive processes by means of conceptual and methodological a-priori moderators (study design, pre-task scenario, context of deception tasks, and P3 quantification). Within-subjects designs show evidence of the underlying cognitive processes, between-subjects designs allow for comparisons of cognitive processes in culprits vs. innocents. Deception in legal contexts results in almost twice as large population effect sizes (delta) than deception in social contexts. Deception in legal contexts supports the salience hypothesis (largest delta), deception in social contexts suggests a combination of salience recognition and mental effort (smaller delta), and active lying requires more mental effort (negative delta). Counter-measure techniques in 3-stimulus protocols reduce the discriminability of concealed vs. truthful P3 amplitudes.

P300 deficits in adults with attention deficit hyperactivity disorder: a meta-analysis

2010 ◽  
Vol 41 (7) ◽  
pp. 1529-1538 ◽  
Author(s):  
B. Szuromi ◽  
P. Czobor ◽  
S. Komlósi ◽  
I. Bitter
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Target Detection ◽  
Effect Size ◽  
Attention Deficit ◽  
Meta Analysis ◽  
Adhd Group ◽  
Hyperactivity Disorder ◽  
Meta Regression ◽  
P3 Amplitude ◽  
And Gender

BackgroundThe P300 (P3) event-related potential (ERP) component, a possible endophenotype for attention deficit hyperactivity disorder (ADHD), has been widely examined in children, but received little attention in adults. Our objective was to conduct a meta-analysis of P3 studies in adults with ADHD.MethodWe searched the Medline and PsycINFO databases for controlled studies examining both adult ADHD and matched healthy controls. Six relevant publications were identified for the meta-analysis, which had comparable data across studies with regard to the amplitude of ERP components related to target detection (P3, P3b). Pooled effect size (ES) for P3 amplitude as well as the association of the ES with age and gender were investigated using meta-regression.ResultsComparing the ADHD group versus controls, the pooled effect size for a decrease in P3 amplitude was in the medium range (Cohen's d=−0.55, p=0.0006). Additionally, meta-regression revealed that decrease in P3 amplitude significantly varied with the mean age of ADHD patients (p=0.0087), with a gradual increasing of the difference at higher ages. Results also showed a significant association between the ES and gender, indicating a more pronounced reduction of P3 amplitude in the ADHD group versus controls when females were predominantly represented in the sample.ConclusionsTo our knowledge, this is the first meta-analysis of P3 characteristics in adults with ADHD. It reveals a significantly decreased P3 amplitude during target detection. Our result that the reduction in P3 amplitude increases with age is interpreted in a neurodevelopmental context.

The effects of low-ratio n-6/n-3 PUFA on biomarkers of inflammation: a systematic review and meta-analysis

2021 ◽  
Author(s):  
Yali Wei ◽  
Yan Meng ◽  
Na Li ◽  
Qian Wang ◽  
Liyong Chen
Keyword(s):  
Systematic Review ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acid ◽  
Meta Analysis ◽  
Chain Polyunsaturated Fatty Acid ◽  
Inflammation Markers ◽  
Pufa Supplementation ◽  
Long Chain

The purpose of the systematic review and meta-analysis was to determine if low-ratio n-6/n-3 long-chain polyunsaturated fatty acid (PUFA) supplementation affects serum inflammation markers based on current studies.

Linguistic Interactions: A Therapeutic Consideration for Adults With Aphasia

2008 ◽  
Vol 17 (3) ◽  
pp. 93-98
Author(s):  
Lynn E. Fox
Keyword(s):  
Clinical Outcomes ◽  
Social Contexts ◽  
Interaction Models ◽  
Social Communities ◽  
Wernicke's Aphasia ◽  
Communication Challenges ◽  
Therapeutic Consideration ◽  
Patterns Of Interaction ◽  
Structural Language

Abstract Linguistic interaction models suggest that interrelationships arise between structural language components and between structural and pragmatic components when language is used in social contexts. The linguist, David Crystal (1986, 1987), has proposed that these relationships are central, not peripheral, to achieving desired clinical outcomes. For individuals with severe communication challenges, erratic or unpredictable relationships between structural and pragmatic components can result in atypical patterns of interaction between them and members of their social communities, which may create a perception of disablement. This paper presents a case study of a woman with fluent, Wernicke's aphasia that illustrates how attention to patterns of linguistic interaction may enhance AAC intervention for adults with aphasia.

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