When young children learn to use language, they start to use their hands in co-verbal gesturing. There are, however, considerable differences between children, and it is not completely understood what these individual differences are due to. We studied how children at 4 years of age employ speech and iconic gestures to convey meaning in different kinds of spatial event descriptions, and how this relates to their cognitive abilities. Focusing on spontaneous illustrations of actions, we applied a semantic feature (SF) analysis to characterize combinations of speech and gesture meaning and related them to the child's visual-spatial abilities or abstract/concrete reasoning abilities (measured using the standardized SON-R test). Results show that children with higher cognitive abilities convey significantly more meaning via gesture and less solely via speech. These findings suggest that young children's use of cospeech representational gesturing is positively related to their mental representation and reasoning abilities.
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http://dx.doi.org/10.1111/cogs.13012 | DOI Listing |
Sci Rep
January 2025
School of Medicine, Yan'an University, Yan'an, 716000, China.
The study aims to develop and validate an effective model for predicting frailty risk in individuals with mild cognitive impairment (MCI). The cross-sectional analysis employed nationally representative data from CHARLS 2013-2015. The sample was randomly divided into training (70%) and validation sets (30%).
View Article and Find Full Text PDFJ Nucl Med
January 2025
Department of Nuclear Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
Cognitive flexibility is the ability to appropriately adapt one's thinking and behavior to changing environmental demands and is conceptualized as an aspect of executive function. The dopamine system has been implicated in cognitive flexibility; however, a direct, that is, neurochemical, link to cognitive flexibility has not been shown yet. The aim of this study was, therefore, to investigate how cognitive flexibility is mediated by dopaminergic signaling in the ventromedial prefrontal cortex (vmPFC).
View Article and Find Full Text PDFJ Commun Disord
January 2025
Escuela de Psicología, Pontificia Universidad Católica de Chile, Santiago, Chile; Centro de Justicia Educacional, Facultad de Educación, Pontificia Universidad Católica de Chile, Santiago, Chile.
Developmental language disorder (DLD) is often associated with deficits in executive functions (EFs). One common area of language difficulty in DLD is the development of vocabulary knowledge and it has been suggested that EF abilities may be linked to this difficulty. However, an explanation for this relationship remains unclear.
View Article and Find Full Text PDFPLoS One
January 2025
Institute of Physiotherapy, FH Joanneum University of Applied Sciences, Graz, Austria.
The impact of cognitive decline in older adults can be evaluated with dual-task gait (DTG) testing in which a cognitive task is performed during walking, leading to increased costs of gait. Previous research demonstrated that higher DTG costs correlate with increasing cognitive deficits and with age. The present study was conducted to explore whether the relationship between the DTG costs and cognitive abilities in older individuals is influenced by sex differences.
View Article and Find Full Text PDFPLoS One
January 2025
Human Neuroscience Group and Centre for Neuroscience and Neuromodulation, Institute for Medical Research, University of Belgrade, Belgrade, Serbia.
Associative memory (AM) plays a crucial role in our ability to link disparate elements of our experiences, yet it is especially vulnerable to age-related decline and pathological conditions. Non-invasive brain stimulation (NIBS), particularly transcranial direct current stimulation (tDCS), has been investigated as a potential intervention to enhance cognitive functions, including AM. Previous tDCS studies yielded inconsistent results, often due to variations in stimulation sites and protocols.
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