Hand preference of individuals with blindness in everyday activities: The effects of age of sight loss, age, and gender.
Hand preference in blind adults depends on age and age at vision loss, so check both facts before you plan motor interventions.
01Research in Context
What this study did
Researchers watched how blind adults used their hands during everyday tasks. They noted which hand the person picked up a cup, opened a door, or wrote with.
The team grouped people by when they lost their sight and by their current age. They wanted to see if these factors changed hand choice.
What they found
Age and the age when sight was lost both shaped hand preference. People who lost vision early in life showed different hand-use patterns than those who lost it later.
Gender made no difference. Men and women picked their preferred hand at the same rate.
How this fits with other research
Kushki et al. (2011) also tracked fine-motor changes, but in sighted kids. Both studies show motor habits shift with age, so you should expect age-linked differences in any group you test.
Gilboa et al. (2010) found that children with NF1 had clear handwriting deficits compared to peers. Vassilios et al. (2014) extend this idea: sensory loss, not just diagnosis, can create its own motor signature.
Park et al. (2011) tied limb structure to function in cerebral palsy. Together, the papers tell us that both body structure and sensory history guide how hands are used.
Why it matters
When you assess daily-living skills in blind clients, ask when they lost their sight. Use that detail to pick the right hand for teaching spoon grip, braille writing, or cane use. Do not assume the same hand choice you saw in a sighted child or in an adult who lost vision later in life.
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02At a glance
03Original abstract
The research aims of the present study were: (a) to assess the hand preference of blind persons in everyday activities on the basis of gender, type of blindness, and age; and (b) to conduct the above analysis at both the item level and the latent trait level, after concluding the optimum factor structure of the instrument. Participants were 82 individuals with visual impairments and blindness. Their mean age was 29.99 years. Handedness was evaluated using a modified version of the Edinburgh Handedness Inventory (Oldfield, 1971). When comparing handedness preferences across age of sight loss, gender, and age groups results indicated that there were significant differences in preference for several everyday tasks across age of sight loss and age groups but not gender. These results were also confirmed at the latent-trait mean level. The present findings add to the extant literature that highlighted hand preferences for individuals with visual impairments and blindness.
Research in developmental disabilities, 2014 · doi:10.1016/j.ridd.2014.03.027