28 January 2010: Children who are ambidextrous (equally skilled with each hand) are more likely to have language, school and behaviour problems than those who are right or left-handed, say researchers.
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A study examined whether being ambidextrous is linked with language, school and behaviour problems related to attention deficit hyperactivity disorder (ADHD) in childhood and adolescence.
Scientists analysed data from nearly 8,000 children who took part in the Northern Finland Birth Cohort. When children were eight years old, the scientists asked parents and teachers about language abilities, school performance and behaviour. They also asked the parents if their child was right- handed, left-handed or mixed-handed. The scientists then repeated the testing when the children were aged 15 to 16 years. They assessed ADHD symptoms using a scale taken from the Diagnostic and Statistical Manual of Mental Disorders.
The scientists found that children who were ambidextrous were at greater risk of having language, school and behaviour problems compared with right and left-handed children. Mixed-handed adolescents were also at twice the risk of having symptoms of ADHD. The scientists suggest that their findings may help teachers and health professionals identify children who are particularly at risk of developing certain learning problems.
Dr Sneh Khemka, medical director for Bupa International, said: “This study is interesting, however, it does not show that all children who are mixed-handed will have language and behaviour problems, and difficulty at school.
“The symptoms of ADHD are common in most children but they become a problem when they are exaggerated compared with other children of the same age, or when the behaviour affects a child’s social and school life. As a parent, if you are concerned that your child may have ADHD, visit your family doctor.”
Read the study
Rodriguez A, Kaakinen M, Moilanen I, Taanila A, McGough JJ, Loo S, Jarvelin MR. Mixed-handedness is linked to mental health problems in children and adolescents. Pediatrics 2010; 125(2): 340-348. doi: 10.1542/peds.2009-1165
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