[NIFL-HEALTH:3457] Re: Readability formulas

From: MarkH38514@aol.com
Date: Fri Nov 16 2001 - 11:16:06 EST


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Subject: [NIFL-HEALTH:3457] Re: Readability formulas
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Point well taken. But I still use readability formulas pretty regularly, and 
I try to get clients not to rely exclusively on grade level estimates. 
Pointing out that their materials are written at a graduate school reading 
level, or that their document averages 30 words per sentence does get their 
attention. 

There is evidence that word frequency is a reasonable estimate of word 
difficulty. Words that do not appear very often in print are usually harder 
to read and understand than words that appear frequently. [Breland, H.M. 
(1996) Word frequency and word difficulty: A comparison of counts in four 
corpora. Psychological Science, 7, 96-99]

Depending on the words used, text can be incomprehensible at any grade level. 
I think it's a mistake to conclude that 6th graders can always understand 
something written at a 6th grade reading level. They may if the writer really 
knows the audience; if not, then  readers won't understand. 

We also need to be aware of document length and information overload.  For 
example, the new HIPAA (Health Insurance Portability and Accountability Act) 
will transform the way health care facilities use patient information, so 
hospitals have to inform patients about their privacy rights. A sample HIPAA 
consent form from the American Hospital Association (developed by a law firm) 
was 3,600 words long--180 sentences at a 2nd year college reading level. This 
document may be completely incomprehensible for sick (and elderly) patients 
under physical, psychological, and emotional stress. Re-writing it to a lower 
grade level may not help at all if there is still more information than the 
patient can process. [Hochhauser, M. (2001) How you can comply with 
HIPAA--and help your patients understand their privacy rights. Patient Care 
Management, 16(12), 1; 3-4] Of course readability formulas were developed 
well before concepts of information processing and information overload were 
discovered. 

When I do a reability analysis I always include all the text, rather than 
just a sample of a few hundred words, since total number of words is an 
important measure. Most people read 200-300 words per minute, so a 3,600 word 
HIPAA document may take 15 - 20 minutes to read. Is that feasible during a 
hospital admission process? 

Common, everyday, concrete words are more likely to be understood than rare, 
abstract words. Most of the readability researchers recognized this point, 
and emphasized the importance of using words that readers already understand. 
Jargon, even if it's a one-syllable word, may be incomprehensible to people 
who aren't in the same field. 

Mark Hochhauser

For more information, contact: 
Mark Hochhauser, Ph.D.
Readability Consulting
3344 Scott Avenue North
Golden Valley, MN 55422
Phone: (763) 521-4672
Fax: (763) 521-5069
E-mail: MarkH38514@aol.com



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