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Understanding macrographia in children with autism spectrum disorders

Johnson, Beth P., Phillips, James G., Papadopoulos, Nicole, Fielding, Joanne, Tonge, Bruce and Rinehart, Nicole J. 2013, Understanding macrographia in children with autism spectrum disorders, Research in developmental disabilities, vol. 34, no. 9, pp. 2917-2926, doi: 10.1016/j.ridd.2013.06.003.

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Title Understanding macrographia in children with autism spectrum disorders
Author(s) Johnson, Beth P.
Phillips, James G.
Papadopoulos, Nicole
Fielding, Joanne
Tonge, Bruce
Rinehart, Nicole J.ORCID iD for Rinehart, Nicole J. orcid.org/0000-0001-6109-3958
Journal name Research in developmental disabilities
Volume number 34
Issue number 9
Start page 2917
End page 2926
Total pages 10
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2013
ISSN 0891-4222
1873-3379
Keyword(s) fine motor
handwriting
manual dexterity
Summary It has been consistently reported that children with autism spectrum disorders (ASD) show considerable handwriting difficulties, specifically relating to accurate and consistent letter formation, and maintaining appropriate letter size. The aim of this study was to investigate the underlying factors that contribute to these difficulties, specifically relating to motor control.

We examined the integrity of fundamental handwriting movements and contributions of neuromotor noise in 26 children with ASD aged 8-13 years (IQ. >. 75), and 17 typically developing controls. Children wrote a series of four cursive letter l's using a graphics tablet and stylus.

Children
with ASD had significantly larger stroke height and width, more variable movement trajectory, and higher movement velocities. The absolute level of neuromotor noise in the velocity profiles, as measured by power spectral density analysis, was significantly higher in children with ASD; relatively higher neuromotor noise was found in bands >3. Hz.

Our findings suggest that significant instability of fundamental handwriting movements, in combination with atypical biomechanical strategies, contribute to larger and less consistent handwriting in children with ASD.
Language eng
DOI 10.1016/j.ridd.2013.06.003
Field of Research 170102 Developmental Psychology and Ageing
Socio Economic Objective 970117 Expanding Knowledge in Psychology and Cognitive Sciences
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2013
Copyright notice ©2013, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30056258

Document type: Journal Article
Collection: School of Psychology
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Citation counts: TR Web of Science Citation Count  Cited 9 times in TR Web of Science
Scopus Citation Count Cited 11 times in Scopus
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Created: Thu, 26 Sep 2013, 14:48:25 EST by Barb Lavelle

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