Ipsilateral Printing in Children's Mirror-Writing: A Cause of Specific Learning Disabilities?
Previous research has demonstrated that young children produce mirror-image letter-reversals when printing their names in a leftward direction from the midline or right margin of their writing paper. This ability is postulated to be an epiphenomenon of a symmetric, proximal (arm) stage of motor deve...
| Publicado en: | Canadian Journal of Experimental Psychology / Revue Canadienne de Psychologie Expérimentale Vol. 66; no. 3; pp. 172 - 181 |
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| Formato: | Artículo |
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Canadian Psychological Association
Sep2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=79353027&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 79353027 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 11961961 CJX jtl: Canadian Journal of Experimental Psychology / Revue Canadienne de Psychologie Expérimentale issn: 11961961 maglogo: N pubinfo: dt: Sep2012 vid: 66 iid: 3 pid: 98 pub: Canadian Psychological Association artinfo: ui: 79353027 10.1037/a0025873 ppf: 172 ppct: 9 formats: fmt: @attributes: type: P size: 266KB tig: atl: Ipsilateral Printing in Children's Mirror-Writing: A Cause of Specific Learning Disabilities? aug: au: Mather, David S. su: Analysis of variance Learning disabilities Cerebral dominance Dyslexia Space perception Vision Writing Data analysis software Descriptive statistics sug: subj: Analysis of variance Learning disabilities Cerebral dominance Dyslexia Space perception Vision Writing Data analysis software Descriptive statistics keyword: dyslexia handwriting left-hand inverted letter Mirror-writing dyslexie lettre main gauche inversée écriture écriture en miroir dyslexia handwriting left-hand inverted letter Mirror-writing dyslexie lettre main gauche inversée écriture écriture en miroir ab: Previous research has demonstrated that young children produce mirror-image letter-reversals when printing their names in a leftward direction from the midline or right margin of their writing paper. This ability is postulated to be an epiphenomenon of a symmetric, proximal (arm) stage of motor development that ontogenetically precedes lateralization of fine-motor distal (finger) control--a stage in which each arm can be controlled by either side of the brain. From this view, canonical writing in right hemi-space is contralaterally mediated by the left hemisphere and mirror-writing in left hemi-space is ipsilaterally mediated by the right hemisphere. However, evidence of right hemisphere canonical letter processing in dyslexia suggests that this is not always the case. Concordantly, an early study corrected reversals by having children print these errors canonically in left hemi-space and then rightward across the midline into right hemi-space. To further understand this behaviour, the present study investigated mirror-writing in three schools (Public, Montessori, and Waldorf) each differing in how writing is introduced. It was hypothesised that there would be no school-differences in mirror-writing if printing had been learned before school-entry and that some children would produce reversals in right hemi-space that were canonically written in left-hemi-space (inverse reversals)--the opposite of the normal pattern. The results showed that 39% of the children demonstrated these inverse reversals. It is discussed how this unexpectedly high incidence may be foundational in the development of the phonologically proficient and deficient subtypes of dyslexia, spelling-dysgraphia, and the left-hand inverted writing posture. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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