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Pearson A, Hodgetts S. Can cerebral lateralisation explain heterogeneity in language and increased non-right handedness in autism? A literature review. RESEARCH IN DEVELOPMENTAL DISABILITIES 2020; 105:103738. [PMID: 32721786 DOI: 10.1016/j.ridd.2020.103738] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 07/06/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Autism is characterised by phenotypic variability, particularly in the domains of language and handedness. However, the source of this heterogeneity is currently unclear. AIMS To synthesise findings regarding the relationship between language, handedness, and cerebral lateralisation in autistic people and consider how future research should be conducted in order to progress our understanding of phenotypic variability. METHODS AND PROCEDURES Following a literature search and selection process, 19 papers were included in this literature review. Studies using behavioural, structural, and functional measures of lateralisation are reviewed. OUTCOMES AND RESULTS The studies reviewed provided consistent evidence of differential cerebral lateralisation in autistic people, and this appears to be related to between-group differences in language. Evidence relating this to handedness was less consistent. Many of the studies did not include heterogeneous samples, and/or did not specify the language process they investigated. CONCLUSIONS AND IMPLICATIONS This review suggests that further research is needed to fully understand the relationship between cerebral lateralisation and phenotypic variability within autism. It is crucial that future studies in this area include heterogeneous samples, specify the language process they are investigating, and consider taking developmental trajectories into account.
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Affiliation(s)
- Amy Pearson
- School of Psychology, University of Sunderland, Sunderland, UK.
| | - Sophie Hodgetts
- School of Psychology, University of Sunderland, Sunderland, UK
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52
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Bondi D, Prete G, Malatesta G, Robazza C. Laterality in Children: Evidence for Task-Dependent Lateralization of Motor Functions. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17186705. [PMID: 32942557 PMCID: PMC7558377 DOI: 10.3390/ijerph17186705] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/12/2020] [Accepted: 09/14/2020] [Indexed: 12/18/2022]
Abstract
The behavioral preference for the use of one side of the body starts from pre-natal life and prompt humans to develop motor asymmetries. The type of motor task completed influences those functional asymmetries. However, there is no real consensus on the occurrence of handedness during developmental ages. Therefore, we aimed to determine which motor asymmetries emerged differently during childhood. A total sample of 381 children in grades 1 to 5 (6-11 years old) of primary school were recruited and tested for two fine coordination tasks (Floppy, led by dexterity, and Thumb, led by speed-dominated skills) and handgrip strength (HS). Data about their handedness, footedness and sports participation were also collected. Children performed better with their dominant side, especially for the Floppy and HS tests. The asymmetries were more marked in right-handed children and did not differ by age, gender or type of sport. Our findings support the thesis of a functional lateralization in complex coordinative tasks and in maximal strength during developmental ages. Furthermore, our findings extend the evidence of a stronger lateralization in right-handed individuals, demonstrating it at a functional level in primary school children performing motor tasks. Fine motor skills allow a "fine" understanding of developmental trajectories of lateralized behavior.
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Affiliation(s)
- Danilo Bondi
- Department of Neuroscience, Imaging and Clinical Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Correspondence:
| | - Giulia Prete
- Department of Psychological, Health and Territorial Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.P.); (G.M.)
| | - Gianluca Malatesta
- Department of Psychological, Health and Territorial Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy; (G.P.); (G.M.)
| | - Claudio Robazza
- Department of Medicine and Aging Sciences, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy;
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53
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Packheiser J, Schmitz J, Berretz G, Carey DP, Paracchini S, Papadatou-Pastou M, Ocklenburg S. Four meta-analyses across 164 studies on atypical footedness prevalence and its relation to handedness. Sci Rep 2020; 10:14501. [PMID: 32879356 PMCID: PMC7468297 DOI: 10.1038/s41598-020-71478-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 08/14/2020] [Indexed: 02/06/2023] Open
Abstract
Human lateral preferences, such as handedness and footedness, have interested researchers for decades due to their pronounced asymmetries at the population level. While there are good estimates on the prevalence of handedness in the population, there is no large-scale estimation on the prevalence of footedness. Furthermore, the relationship between footedness and handedness still remains elusive. Here, we conducted meta-analyses with four different classification systems for footedness on 145,135 individuals across 164 studies including new data from the ALSPAC cohort. The study aimed to determine a reliable point estimate of footedness, to study the association between footedness and handedness, and to investigate moderating factors influencing footedness. We showed that the prevalence of atypical footedness ranges between 12.10% using the most conservative criterion of left-footedness to 23.7% including all left- and mixed-footers as a single non-right category. As many as 60.1% of left-handers were left-footed whereas only 3.2% of right-handers were left-footed. Males were 4.1% more often non-right-footed compared to females. Individuals with psychiatric and neurodevelopmental disorders exhibited a higher prevalence of non-right-footedness. Furthermore, the presence of mixed-footedness was higher in children compared to adults and left-footedness was increased in athletes compared to the general population. Finally, we showed that footedness is only marginally influenced by cultural and social factors, which play a crucial role in the determination of handedness. Overall, this study provides new and useful reference data for laterality research. Furthermore, the data suggest that footedness is a valuable phenotype for the study of lateral motor biases, its underlying genetics and neurodevelopment.
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Affiliation(s)
- Julian Packheiser
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr University Bochum, Universitätsstraße 150, 44780, Bochum, Germany.
| | - Judith Schmitz
- School of Medicine, University of St Andrews, St Andrews, UK
| | - Gesa Berretz
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr University Bochum, Universitätsstraße 150, 44780, Bochum, Germany
| | - David P Carey
- Perception, Action and Memory Research Group, School of Psychology, Bangor University, Bangor, UK
| | | | - Marietta Papadatou-Pastou
- School of Education, Department of Primary Education, National and Kapodistrian University of Athens, Athens, Greece
| | - Sebastian Ocklenburg
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr University Bochum, Universitätsstraße 150, 44780, Bochum, Germany
- Department of Psychology, University of Duisburg-Essen, Essen, Germany
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54
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Early Lateralization of Gestures in Autism: Right-Handed Points Predict Expressive Language. J Autism Dev Disord 2020; 50:1147-1158. [PMID: 31872323 DOI: 10.1007/s10803-019-04347-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Children with autism spectrum disorder (ASD) produce fewer deictic gestures, accompanied by delays/deviations in speech development, compared to typically-developing (TD) children. We ask whether children with ASD-like TD children-show right-hand preference in gesturing and whether right-handed gestures predict their vocabulary size in speech. Our analysis of handedness in gesturing in children with ASD (n = 23, Mage = 30-months) and with TD (n = 23, Mage = 18-months) during mother-child play showed a right-hand preference for TD children-but not for children with ASD. Nonetheless, right-handed deictic gestures predicted expressive vocabulary 1 year later in both children with ASD and with TD. Handedness for gesture, both hand preference and amount of right-handed pointing, may be an important indicator of language development in autism and typical development.
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55
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Ocklenburg S, Berretz G, Packheiser J, Friedrich P. Laterality 2020: entering the next decade. Laterality 2020; 26:265-297. [DOI: 10.1080/1357650x.2020.1804396] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sebastian Ocklenburg
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Bochum, Germany
| | - Gesa Berretz
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Bochum, Germany
| | - Julian Packheiser
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Bochum, Germany
| | - Patrick Friedrich
- Brain Connectivity and Behaviour Laboratory, Sorbonne Universities, Paris, France
- Groupe d’Imagerie Neurofonctionnelle, Institut des Maladies Neurodégénératives-UMR 5293, CNRS, CEA University of Bordeaux, Bordeaux, France
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56
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Ahtam B, Braeutigam S, Bailey A. Semantic Processing in Autism Spectrum Disorders Is Associated With the Timing of Language Acquisition: A Magnetoencephalographic Study. Front Hum Neurosci 2020; 14:267. [PMID: 32754020 PMCID: PMC7366733 DOI: 10.3389/fnhum.2020.00267] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 06/15/2020] [Indexed: 12/23/2022] Open
Abstract
Individuals with autism show difficulties in using sentence context to identify the correct meaning of ambiguous words, such as homonyms. In this study, the brain basis of sentence context effects on word understanding during reading was examined in autism spectrum disorder (ASD) and typical development (TD) using magnetoencephalography. The correlates of a history of developmental language delay in ASD were also investigated. Event related field responses at early (150 ms after the onset of a final word) and N400 latencies are reported for three different types of sentence final words: dominant homonyms, subordinate homonyms, and unambiguous words. Clear evidence for semantic access was found at both early and conventional N400 latencies in both TD participants and individuals with ASD with no history of language delay. By contrast, modulation of evoked activity related to semantic access was weak and not significant at early latencies in individuals with ASD with a history of language delay. The reduced sensitivity to semantic context in individuals with ASD and language delay was accompanied by strong right hemisphere lateralization at early and N400 latencies; such strong activity was not observed in TD individuals and individuals with ASD without a history of language delay at either latency. These results provide new evidence and support for differential neural mechanisms underlying semantic processing in ASD, and indicate that delayed language acquisition in ASD is associated with different lateralization and processing of language.
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Affiliation(s)
- Banu Ahtam
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Department of Pediatrics, Division of Newborn Medicine, Boston Children's Hospital and Harvard Medical School, Boston, MA, United States
| | - Sven Braeutigam
- Oxford Centre for Human Brain Activity, Wellcome Centre for Integrative Neuroimaging, Department of Psychiatry, University of Oxford, Oxford, United Kingdom
| | - Anthony Bailey
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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57
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Horstick EJ, Bayleyen Y, Burgess HA. Molecular and cellular determinants of motor asymmetry in zebrafish. Nat Commun 2020; 11:1170. [PMID: 32127541 PMCID: PMC7054361 DOI: 10.1038/s41467-020-14965-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 02/04/2020] [Indexed: 02/05/2023] Open
Abstract
Asymmetries in motor behavior, such as human hand preference, are observed throughout bilateria. However, neural substrates and developmental signaling pathways that impose underlying functional lateralization on a broadly symmetric nervous system are unknown. Here we report that in the absence of over-riding visual information, zebrafish larvae show intrinsic lateralized motor behavior that is mediated by a cluster of 60 posterior tuberculum (PT) neurons in the forebrain. PT neurons impose motor bias via a projection through the habenular commissure. Acquisition of left/right identity is disrupted by heterozygous mutations in mosaic eyes and mindbomb, genes that regulate Notch signaling. These results define the neuronal substrate for motor asymmetry in a vertebrate and support the idea that haploinsufficiency for genes in a core developmental pathway destabilizes left/right identity. Many animals show individual left/right biases in motor behaviour, but underlying neural substrates have proven elusive. Here the authors describe neurons that maintain individual, context-dependent lateralisation of swimming behaviour in zebrafish.
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Affiliation(s)
- Eric J Horstick
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, 20892, USA. .,Department of Biology, West Virginia University, Morgantown, WV, USA.
| | - Yared Bayleyen
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, 20892, USA
| | - Harold A Burgess
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, 20892, USA.
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58
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Ocklenburg S. Right brain psychotherapy. Laterality 2020. [DOI: 10.1080/1357650x.2019.1638929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Sebastian Ocklenburg
- Institute of Cognitive Neuroscience, Biopsychology, Department of Psychology, Ruhr-University Bochum, Germany
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59
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Altered structural brain asymmetry in autism spectrum disorder in a study of 54 datasets. Nat Commun 2019; 10:4958. [PMID: 31673008 PMCID: PMC6823355 DOI: 10.1038/s41467-019-13005-8] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 10/01/2019] [Indexed: 01/02/2023] Open
Abstract
Altered structural brain asymmetry in autism spectrum disorder (ASD) has been reported. However, findings have been inconsistent, likely due to limited sample sizes. Here we investigated 1,774 individuals with ASD and 1,809 controls, from 54 independent data sets of the ENIGMA consortium. ASD was significantly associated with alterations of cortical thickness asymmetry in mostly medial frontal, orbitofrontal, cingulate and inferior temporal areas, and also with asymmetry of orbitofrontal surface area. These differences generally involved reduced asymmetry in individuals with ASD compared to controls. Furthermore, putamen volume asymmetry was significantly increased in ASD. The largest case-control effect size was Cohen’s d = −0.13, for asymmetry of superior frontal cortical thickness. Most effects did not depend on age, sex, IQ, severity or medication use. Altered lateralized neurodevelopment may therefore be a feature of ASD, affecting widespread brain regions with diverse functions. Large-scale analysis was necessary to quantify subtle alterations of brain structural asymmetry in ASD. Changes in brain structure asymmetry have been reported in autism spectrum disorder. Here the authors investigate this issue using a large-scale sample consisting of 54 data sets.
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60
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Handedness and sex effects on lateral biases in human cradling: Three meta-analyses. Neurosci Biobehav Rev 2019; 104:30-42. [DOI: 10.1016/j.neubiorev.2019.06.035] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/11/2019] [Accepted: 06/25/2019] [Indexed: 11/19/2022]
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61
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Altered structural brain connectivity involving the dorsal and ventral language pathways in 16p11.2 deletion syndrome. Brain Imaging Behav 2019; 13:430-445. [PMID: 29629500 DOI: 10.1007/s11682-018-9859-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Copy number variants at the chromosomal locus 16p11.2 contribute to neurodevelopmental disorders such as autism spectrum disorders, epilepsy, schizophrenia, and language and articulation disorders. Here, we provide detailed findings on the disrupted structural brain connectivity in 16p11.2 deletion syndrome (patients: N = 21, age range: 8-16 years; typically developing (TD) controls: 18, 9-16 years) using structural and diffusion MRI. We performed global short-, middle-, long-range, and interhemispheric connectivity analysis in the whole brain using gyral topology-based cortical parcellation. Using region of interest analysis, we studied bilateral dorsal (3 segments of arcuate fasciculus (AF)) and ventral (inferior fronto-occipital fasciculus (IFOF), inferior longitudinal fasciculus (ILF), uncinate fasciculus (UF)) language pathways. Our results showed significantly increased axial (AD) and radial (RD) diffusivities in bilateral anterior AF, decreased volume for left long AF, increased mean diffusivity (MD) and RD for right long AF, and increased AD for bilateral UF in the 16p11.2 deletion group in the absence of significant abnormalities in the whole-brain gyral and interhemispheric connectivity. The selective involvement of the language networks may aid in understanding effects of altered white matter connectivity on neurodevelopmental outcomes in 16p11.2 deletion.
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62
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Mohammadi H, Papadatou-Pastou M. Cerebral laterality as assessed by hand preference measures and developmental stuttering. Laterality 2019; 25:127-149. [PMID: 31144576 DOI: 10.1080/1357650x.2019.1621329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The causes of developmental stuttering, a neurodevelopmental communicative disorder, have not been elucidated to date. Neuroimaging studies suggest that atypical cerebral laterality could be one of such causal factors. Moreover, handedness, a behavioural index for cerebral laterality, has been linked to stuttering and recovery from it. However, findings are conflicting, possibly due to sample selection procedures, which typically rely on self-reported stuttering, and to the fact that handedness is typically assessed with regards to its direction rather than degree. We investigated the possible relationship between handedness and stuttering. This is the first study where children who stutter (CWS) were selected using clinical criteria as well as speech samples and where a non-Western population was studied. Findings from 83 CWS aged 3-9 years (mean = 6.43, SD = 1.84) and 90 age- and sex-matched children who do not stutter (mean = 6.45, SD = 1.71) revealed no differences in their hand preference scores as evaluated by parent-completed Edinburgh Handedness Inventory, for both direction and degree. The severity of stuttering was not found to correlate with the degree of handedness. We suggest that parents and professionals not treat left- or mixed-hand preference as a reason for concern with regards to stuttering.
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Affiliation(s)
- Hiwa Mohammadi
- Department of Neurology & Sleep Disorders Research Center, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Marietta Papadatou-Pastou
- School of Education, Faculty of Primary Education, National and Kapodistrian University of Athens, Athens, Greece
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63
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The neurophysiological correlates of handedness: Insights from the lateralized readiness potential. Behav Brain Res 2019; 364:114-122. [DOI: 10.1016/j.bbr.2019.02.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/30/2019] [Accepted: 02/12/2019] [Indexed: 12/21/2022]
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64
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Ocklenburg S, Isparta S, Peterburs J, Papadatou-Pastou M. Paw preferences in cats and dogs: Meta-analysis. Laterality 2019; 24:647-677. [DOI: 10.1080/1357650x.2019.1578228] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Sebastian Ocklenburg
- Biopsychology, Department of Psychology, Institute of Cognitive Neuroscience, Ruhr-University Bochum, Bochum, Germany
| | - Sevim Isparta
- Biopsychology, Department of Psychology, Institute of Cognitive Neuroscience, Ruhr-University Bochum, Bochum, Germany
- Department of Genetics, Faculty of Veterinary Medicine, Ankara University, Ankara, Turkey
| | - Jutta Peterburs
- Biological Psychology, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Marietta Papadatou-Pastou
- School of Education, Department of Primary Education, National and Kapodistrian University of Athens, Athens, Greece
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65
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A large-scale population study of early life factors influencing left-handedness. Sci Rep 2019; 9:584. [PMID: 30679750 PMCID: PMC6345846 DOI: 10.1038/s41598-018-37423-8] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 11/29/2018] [Indexed: 12/27/2022] Open
Abstract
Hand preference is a conspicuous variation in human behaviour, with a worldwide proportion of around 90% of people preferring to use the right hand for many tasks, and 10% the left hand. We used the large cohort of the UK biobank (~500,000 participants) to study possible relations between early life factors and adult hand preference. The probability of being left-handed was affected by the year and location of birth, likely due to cultural effects. In addition, hand preference was affected by birthweight, being part of a multiple birth, season of birth, breastfeeding, and sex, with each effect remaining significant after accounting for all others. Analysis of genome-wide genotype data showed that left-handedness was very weakly heritable, but shared no genetic basis with birthweight. Although on average left-handers and right-handers differed for a number of early life factors, all together these factors had only a minimal predictive value for individual hand preference.
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66
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Abstract
The mechanisms behind handedness formation in humans are still poorly understood. Very low birthweight is associated with higher odds of left-handedness, but whether this is due to low birthweight itself or premature birth is unknown. Handedness has also been linked to development, but the role of birthweight behind this association is unclear. Knowing that birthweight is lower in multiple births, triplets being about 1.5 kg lighter in comparison with singletons, and that multiples have a higher prevalence of left-handedness than singletons, we studied the association between birthweight and handedness in two large samples consisting exclusively of triplets from Japan (n = 1,305) and the Netherlands (n = 947). In both samples, left-handers had significantly lower birthweight (Japanese mean = 1,599 g [95% confidence interval (CI): 1,526-1,672 g]; Dutch mean = 1,794 g [95% CI: 1,709-1,879 g]) compared with right-handers (Japanese mean = 1,727 g [95% CI: 1,699-1,755 g]; Dutch mean = 1,903 g [95% CI: 1,867-1,938 g]). Within-family and between-family analyses both suggested that left-handedness is associated with lower birthweight, also when fully controlling for gestational age. Left-handers also had significantly delayed motor development and smaller infant head circumference compared with right-handers, but these associations diluted and became nonsignificant when controlling for birthweight. Our study in triplets provides evidence for the link between low birthweight and left-handedness. Our results also suggest that developmental differences between left- and right-handers are due to a shared etiology associated with low birthweight.
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67
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Burnett AC, Anderson PJ, Joseph RM, Allred EN, O’Shea TM, Kuban KC, Leviton A. Hand Preference and Cognitive, Motor, and Behavioral Functioning in 10-Year-Old Extremely Preterm Children. J Pediatr 2018; 195:279-282.e3. [PMID: 29336793 PMCID: PMC5869125 DOI: 10.1016/j.jpeds.2017.11.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/31/2017] [Accepted: 11/30/2017] [Indexed: 12/26/2022]
Abstract
The association of hand preference (left, mixed, and right) with cognitive, academic, motor, and behavioral function was evaluated in 864 extremely preterm children at 10 years of age. Left-handed and right-handed children performed similarly but mixed-handed children had greater odds of functional deficits across domains than right-handed children.
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Affiliation(s)
- Alice C. Burnett
- Victorian Infant Brain Studies, Murdoch Childrens Research Institute, Melbourne, Australia,Premature Infant Follow-Up Program, Royal Women’s Hospital, Melbourne, Australia,Neonatal Medicine, Royal Children’s Hospital, Melbourne, Australia,Department of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Peter J. Anderson
- Victorian Infant Brain Studies, Murdoch Childrens Research Institute, Melbourne, Australia,Premature Infant Follow-Up Program, Royal Women’s Hospital, Melbourne, Australia,School of Psychological Sciences, Monash University, Melbourne, Australia
| | - Robert M. Joseph
- Department of Anatomy and Neurobiology, Boston University, Boston MA, USA
| | - Elizabeth N. Allred
- Department of Neurology, Boston Children’s Hospital, Boston MA, USA,Department of Neurology, Harvard Medical School, Boston MA, USA
| | - T Michael O’Shea
- Department of Pediatrics, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Karl C.K. Kuban
- Division of Pediatric Neurology, Department of Pediatrics, Boston University Medical Center, Boston MA, USA
| | - Alan Leviton
- Department of Neurology, Boston Children’s Hospital, Boston MA, USA,Department of Neurology, Harvard Medical School, Boston MA, USA
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68
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Rysstad AL, Pedersen AV. There Are Indeed More Left-Handers Within the Autism Spectrum Disorder Compared with in the General Population, but the Many Mixed-Handers Is the More Interesting Finding. J Autism Dev Disord 2018; 48:3253-3255. [PMID: 29594926 DOI: 10.1007/s10803-018-3553-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Letter to the editor in response to Howard Kushner's claims that our data on non-right-handedness within the autism spectrum disorder were organized, by sleight of hand, so they would give a significant result that would support our desired conclusion. Here, we have re-categorized our data, and present evidence that there are indeed more left-handers within the ASD. Furthermore, we refute claims that we have misinterpreted our results in order to conclude about a causal link between left-handedness and ASD, and highlight our original suggestion that mixed-handedness, more specifically unclear handedness, is the bigger problem, and that our findings of a total 60% non-right-handedness was the more interesting finding.
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Affiliation(s)
- Anne Langseth Rysstad
- Special Section for Intellectual Disabilities and Autism Spectrum Disorders, Vestre Viken HF, Lier, Norway
| | - Arve Vorland Pedersen
- Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7491, Trondheim, Norway.
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69
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Papadatou-Pastou M. Handedness and cognitive ability: Using meta-analysis to make sense of the data. PROGRESS IN BRAIN RESEARCH 2018; 238:179-206. [DOI: 10.1016/bs.pbr.2018.06.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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