Search results for "intra-individual variability"

showing 2 items of 2 documents

Time-on-Task in Children with ADHD: An ex-Gaussian Analysis

2013

AbstractAlthough it is widely known that high intra-individual variability (IIV) is a key characteristic of attention deficit/hyperactivity disorder (ADHD), a detailed exploration of the IIV pattern during the time course of a cognitive task has never been carried out. In this study, 30 children with ADHD and 30 controls, were administered the Conners’ Continuous Performance Task (CPT-II). The across-block individual performance of the groups was analyzed using an ex-Gaussian approach, which enabled a clearer understanding of how individual response times (RTs) fluctuate during a task in comparison with conventional measures of central tendency. While the conventional measures showed a sign…

MaleTime FactorsTime FactorAdolescentDevelopmental disorderIndividualityNormal DistributionContinuous performance taskTask Performance and AnalysiTime on taskTask (project management)Settore M-PSI/04 - Psicologia Dello Sviluppo E Psicologia Dell'EducazioneContinuous performance taskTask Performance and AnalysisReaction TimemedicineEx-Gaussian functionHumansAttention deficit hyperactivity disorderChildNeuroscience (all)Settore M-PSI/02 - Psicobiologia E Psicologia Fisiologicamedicine.diagnostic_testGeneral NeuroscienceContrast (statistics)Cognitionmedicine.diseaseSustained attentionEx gaussianDevelopmental disorderPsychiatry and Mental healthClinical PsychologyAttention-deficit/hyperactivity disorderAttention Deficit Disorder with HyperactivityIntra-individual variabilityFemaleNeurology (clinical)PsychologyHumanCognitive psychologyJournal of the International Neuropsychological Society
researchProduct

Individual differences in behavioral consistency are related to sequential access to resources and body condition in a producer-scrounger game

2014

Investigating the evolution of consistent between-individual behavioral differences necessitates to explain the emergence of within-individual consistency. Relying on a recent mathematical model, we here test the prediction that the emergence of differences in within-individual consistency is related to the sequential access to resources in a frequency-dependent foraging game. To this end we used flocks of zebra finches (Taeniopygia guttata) engaged in a producer-scrounger foraging game. Tactic investment (i.e., the proportion of hops with the head down) significantly predicted successful tactic use (i.e., the proportion of seeds produced). In support of predictions, we found that individua…

media_common.quotation_subjectForaginglcsh:EvolutionEcology and EvolutionVariation (game tree)explorationConsistency (negotiation)lcsh:QH540-549.5state-dependencelcsh:QH359-425PersonalityBig Five personality traitsTaeniopygia guttataEcology Evolution Behavior and Systematicsmedia_commonbehavioral flexibilitybiologyEcologyEcologyFlexibility (personality)biology.organism_classificationSequential accessintra-individual variabilitypersonalitylcsh:Ecologybody conditionPsychologysocial foragingTaeniopygiaCognitive psychologyFrontiers in Ecology and Evolution
researchProduct