Handedness and digit ratio predict overconfidence in cognitive and motor skill tasks in a sample of preschoolers
2015; Springer Nature; Volume: 35; Issue: 2 Linguagem: Inglês
ISSN
1545-2921
AutoresSérgio Da Silva, Bruno César de Melo Moreira, Newton C. A. da Costa,
Tópico(s)Evolutionary Psychology and Human Behavior
ResumoAbstract In a sample of 141 preschoolers, ages 4 to 6, we find children display overconfidence in cognitive and motor skilltasks, a result that replicates that of adults. Both set of findings suggest the bias may not be learned behavior.Moreover, we find right-handed children to display more overconfidence in the cognitive task, whereas low digit-ratiochildren show more overconfidence in fine and gross motor skill tasks. Handedness polymorphism has been linked toneurological differences, and in literature low digit ratios are commonly associated with high fetal testosterone. Funding: BM: Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES, Brazil) PhD scholarship, www.capes.gov.br. SDS,NDC: Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, Brazil), www.cnpq.br. Grant Number: 304342/2009-2. Thefunders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Citation: Sergio Da Silva and Bruno Moreira and Newton Da Costa Jr, (2015) ''Handedness and digit ratio predict overconfidence incognitive and motor skill tasks in a sample of preschoolers'', Economics Bulletin, Volume 35, Issue 2, pages 1087-1097Contact: Sergio Da Silva - professorsergiodasilva@gmail.com, Bruno Moreira - bruno.melo@ifmg.edu.br, Newton Da Costa Jr -newton@cse.ufsc.br.Submitted: April 10, 2015. Published: May 14, 2015.
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