Practice Makes Permanent
Dvorak vs. QWERTY Keyboard Layouts
Should children with hand anomalies use an alternative layout?
Staying limber at the computer
Practice Makes Permanent
It used to be that children learned how to type on a typewriter in a formal typing class in the 7th or 8th grade. Now, children often begin to play on a computer keyboard almost as soon as they can point a finger. While many kids still take typing classes in their middle and high school years, by that time they have already typed hundreds (maybe thousands) of emails and other stuff. In so doing, many of them have adapted their keystrokes to typing on the standard "QWERTY" keyboard layout that they find at school, home, and library computers. At a minimum, many of them already have developed the good old "hunt and peck" strategy for typing at the computer keyboard using anywhere from 2 to 10 fingers (index fingers on up).
The problem, or potential problem, with this scenario is that "practice makes permanent," as the saying goes among occupational therapists. Many children who learn to type on their own without formal instruction set "motor-memory" patterns that are difficult, if not impossible, to undo later. To provide an illustration of the role that "motor-memory" plays both in performing and learning familiar and novel tasks, grab a sneaker with laces and read on.
So lets explore an example of what I call mischievous "motor-memory". I bet that if I were to ask you to tie your shoelaces with your eyes closed, you could do it, really easily. Your fingers have a "motor-memory" for tying shoelaces, following some pattern that you learned when you were little. This pattern is called a "motor plan".
Now, suppose that I asked you to try tying your shoelaces with a slight variation -- reversing the roles of the left and right hands. Youd probably notice that your fingers seemed like they were moving through peanut butter, way more clumsy and awkward than usual. If you were to continue tying your shoelaces like that for the rest of your life, you would need to think through that motor plan each time you tied your shoelaces until that new pattern had become rote like before.
Learning how to do something unfamiliar that requires a complicated motor plan is tough enough, but re-learning the motor plan for an activity that you already know how to do is even more difficult. In the first instance, you are learning through repetition until it "clicks." In the second instance, youre doing all that and also trying not to do it the way you had before.
What does this have to do with children with hand anomalies typing on a computer keyboard? The problem is that these children are at greater risk of developing overuse syndromes if they don't learn balanced motor plans.
Human beings developed bilateral hand use for a reason: you have a ready-made backup, should anything happen to one arm. When you have a hand anomaly, youre already on your back-up. You dont have much leeway. Children with hand anomalies need to learn how to type using an efficient and muscularly healthy motor plan right from the start. Since they already are at heightened risk for developing overuse and overcompensation syndromes due to the muscle and usage imbalances that are characteristic of their different anatomy, learning good typing hygiene is essential. They dont have the luxury of misusing their bodies!
As a parent, you have the opportunity to help your child with a hand anomaly learn how to navigate the computer keyboard layout safely, to avoid having to re-learn it later. All of us know that if its too hard to re-learn something, we stick with the more familiar routine, even if we jeopardize our health sometime down the line. Overuse syndromes dont develop overnight, just as tooth decay and cavities arent the result of one missed night of brushing teeth. The habits that children set when they are young catch up to them when they are adults. You are the most important player in helping your child to avoid developing a nasty, painful overuse syndrome by explaining to him why his typing hygiene is important and assisting him in making good choices about his posture and typing habits.
Dvorak vs. QWERTY Keyboard Layouts
You may know that when typists used to use mechanical typewriters, keys would jam if they typed too fast. In the late 1860s, Christopher Sholes of Milwaukee designed a layout that would allow typists to type as fast as possible without jamming the keys. The "QWERTY" typerwriter layout gets its name from the letters of the top row of a standard typerwriter, which spells QWERTYUIOP. The QWERTY layout became standard for typewriters, and when computers arrived, the layout remained. The problem is that computers dont jam the same way as typewriters once did, so using the QWERTY layout no longer makes much sense. And with the rise of repetitive use injuries, many people are looking for alternatives to the QWERTY system, which allegedly contributes to their incidence.
"Dvorak" refers to an alternate keyboard layout which is purportedly more "finger-friendly" than the standard QWERTY layout. August Dvorak invented a layout in 1932 based upon studies of language usage patterns and typing habits. In the Dvorak layout, keys are arranged so that all of the highest-frequency letters are located on the home row, which is the centered position for the fingers. The lowest-frequency keys are positioned farther away, so that you extend your fingers less often, which really cuts down on finger strain. In the standard two-handed Dvorak system, 70% of all keystrokes take place on the home row, compared with 32% for QWERTY, where most typing occurs on the top row. Some proponents claim that the Dvorak layout reduces the incidence of repetitive use injuries. As of right now, there are no large-scale research studies that measure outcomes of using the Dvorak and QWERTY layouts.
One great thing about the Dvorak system is that there are two ready-made layouts for one- handed typists. So if your child has a "normal" right hand, he could use the right-handed Dvorak layout, and vice-versa.
What keyboarding options are available for children with hand anomalies?
Probably the most common keyboarding solution is simply to learn to type on the standard QWERTY keyboard with only one hand. This option is certainly convenient, since it requires no special accommodations. However, because it involves awkward use of the fingers to stretch for common keys, it may increase the risk of repetitive stress injury for the unaffected hand. For typists with repetitive stress injury, it may exacerbate the problem.
Two good free options are the left- and right-handed Dvorak layouts. The advantage of these is that they are included with the Windows operating system, and it takes less than two minutes to configure your computer to use it.
If your child has one normal hand and one partial hand, or if both hands are affected, then you also should consider making your own custom layout. There are several keyboard mapping programs available for download that can be used for this purpose. Since I have a thumb on my left hand, I wanted the keyboard layout that I used to enable me to hit a bunch of keys with my left thumb. My husband used Janko's Keyboard Generator to create a custom layout according to my specifications. If you do not feel so computer-savvy but do want to accommodate the partial hand, consider a visit to your local occupational therapist to help design an efficient individualized keyboard layout, and then to a computer guru to implement it.
You dont need to purchase an expensive new keyboard to use the Dvorak or a custom layout. But I do recommend either that you purchase labels (click on individual listings) to cover the key names or that you purchase a cheap ($10) keyboard that has removable keys at any of the large computer mega-stores. Note that to be able to rearrange the keys on a keyboard, all of the keys must be the same size (on some keyboards, the keys are "graded", meaning that the keys on the higher rows are deeper), and not all of the keys will switch. On my keyboard, all but 4 of the keys were movable. I put labels on the 4 keys that werent moveable. If more than one person uses the computer, you should have one keyboard that is arranged in the Dvorak layout for your child and one standard QWERTY layout keyboard. Just exchange them when your child needs to use the computer.
A more expensive option is to purchase a specialized keyboard. The Little Fingers keyboard by DataDesk Technologies is worth considering for any child. Although it is not specifically designed for one-handed typing, it is designed for childred with small hands. If you intend to use the Little Fingers keyboard with a layout such as Dvorak, then please note that I do not know whether its keys are moveable, nor am I aware of keyboard labels designed for the smaller sized keys. The Little Fingers is available with a track ball or standard numeric key pad. Children can graduate to a standard keyboard when they are big enough to use one. In addition, a number of specialized one-handed alternative keyboards are listed here. The preferred choice will depend on the precise nature of the hand anomaly. If in doubt, your local occupational therapist can help determine the best option for your child.
Finally, you may want to consider voice recognition software. My personal experience with such software has been mixed. Strain on the hand is replaced by strain on the eyes and voice, from carefully watching the screen for typos, and from the frequent necessity for repetition. Still, the quality of the software does improve with each new generation, so I am hopeful that it will eventually provide a more consistent advantage.
Should children with hand anomalies use an alternative layout?
While alternate keyboard layouts such as Dvorak may be a smart choice for two-handed typists, it is even more important to consider such alternatives for people with hand anomalies. One-handed typists already are at a serious disadvantage, in that they must type every key using just 4 fingers (the thumb really cant type more than the space bar). That means a lot of wear and tear on the dominant hand, which is doing almost every other task as well. Now, if you happen to be lucky enough to have a large hand, then maybe you dont need to worry quite as much, but you still would be wise to consider an alternative layout designed for one-handed typists. If you happen to have a small or even an average size hand, then you should strongly consider using an alternative layout. The reason is simple: typing one-handed on the standard QWERTY layout, your fingers naturally rest on the home keys F G H J -- not the most important keys to have at your fingertips! In contrast, you must stretch awkwardly to reach frequently-used keys such as A, S, O, and L.
I must acknowledge that the topic of alternative keyboard layouts is somewhat controversial. For example, aboutonehandtyping.com advocates that the Dvorak layout never be used, and that the standard QWERTY layout be used instead, if possible. The main argument is that the ability to type on a standard keyboard is an essential skill for school, libraries, the workplace, or other places where it may not be convenient or possible to reconfigure the keyboard. Another argument is that children with differences should not be given additional reasons to feel self-conscious.
Although it is certainly important to take into consideration your child's self-esteem, I argue that it is also important to consider your child's long-term health. In my personal experience, I learned in 8th grade to type using the one-handed QWERTY technique. When I hit college, I developed a severe repetetive use injury that took years to heal. I believe that the injury was either caused or exacerbated by my use of the QWERTY layout. The years of suffering caused far more damage to my self-esteem than any accommodations. In fact, I eventually required more accommodations because of it. When I switched to a custom keyboard layout, my typing endurance increased significantly.
Ultimately, this is a decision between you and your child, perhaps with the assistance of an occupational therapist. Every solution does carry drawbacks as well as benefits. I recommend that you carefully examine all options, to determine which is the best for your child.
I highly recommend purchasing an inexpensive device called a mouse bridge. The mouse sits on this raised platform over the numeric keypad. This allows the mouse to be much closer to the resting hand position on the keyboard, thus reducing unnecessary strain on the shoulder when using the mouse. Although this device may be useful for two-handed typists, it is more important for the right-handed typist, who rests her hand in the middle of the keyboard.
There are several versions of this device; your choice should depend on the dimensions of your keyboard and workspace. Many of the web sites that sell mouse bridges explain how to choose among the options.
Depending on the nature of the hand anomaly, it may be possible to operate the mouse with the affected hand. That would free up the dominant hand for exclusive use in typing. This option, however, may cause strain in the affected hand, especially if it is necessary to stretch awkwardly to reach the buttons, or to execute a "click and drag" maneuver.
There are also many alternative mouse designs, which are supposed to be "ergonomic". These include track balls, touch screens, touch pads, foot pedals (for mouse clicking), and unusually-shaped mice. My experience with these has been that they generally exchange one type of strain for another, and I have not found an ideal solution. As with the various keyboarding options, the solution must be chosen based on the needs of the individual child.
By now, you surely are familiar with ontheotherhand.org's focus on promoting good health for children with hand anomalies. Which is why we have devoted so much space to considering keyboard and mouse design issues. But underlying these issues is an even more fundamental issue: "ergonomics", otherwise known as good body positioning. For several years corporations seeking to reduce carpal tunnel syndrome and other repetitive strain injuries among employees have buzzed about ergonomics. But computer ergonomics for children is just beginning to be recognized as essential for instilling in children an awareness of how to take care of their bodies, thereby helping to prevent a whole host of body aches and nasty conditions. Remember once again that children learn habits from a young age, and that children with hand anomalies need to focus on how they are using their whole bodies, not just their arms.
For excellent general discussions of computer ergonomics for children, visit the Cornell University Ergonomics Website and the Oregon Occupational Safety and Health Division website for great tips on computer station set-up, good computer posture, and practicing good work habits. These sites also have "before and after" pictures of children's workstations that have been modified to fit their needs.
Staying limber at the computer
Two elements of working safely at the computer are taking breaks and relaxing tired muscles. Please see a great site with visuals of exercises and stretches for fingers, hands, arms, shoulders, and neck. Try doing these with your child to encourage him/her.
Here's a free screen saver from the American Occupational Therapy Association (AOTA) that reminds you to take a stretch break.
Here are some great books that can give you more information about healthy computer use.
Sitting Pretty: Teaching Safe Posture by Kathleen Dulmage, published by Bytes of Learning. Appropriate for a young audience, this book is ideal for a school typing class or home use. Available through this site.
Comfort at Your Computer: Body Awarness Training for Pain-Free Computer Use by Paul Linden, published by Pub Group West. This book, written by a black belt in Aikido and Karate with a Ph.D. in Physical Education, covers efficient breathing, improving body awareness, and balancing the muscles of the body while using a computer. Available through amazon.com.
© 2004. Laura Faye Clubok, MS, OTR/L, On The Other Hand Therapy.
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