Fandom

Psychology Wiki

34,203pages on
this wiki
Add New Page
Talk0 Share

Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |

Educational Psychology: Assessment · Issues · Theory & research · Techniques · Techniques X subject · Special Ed. · Pastoral


SMOG (Simple Measure of Gobbledygook) is a readability formula that estimates the years of education needed to completely understand a piece of writing. SMOG is widely used, particularly for checking health messages.[1] [2] The SMOG formula yields a 0.985 correlation with a standard error of 1.5159 grades with the grades of readers who had 100% comprehension of test materials.[3]

SMOG was published by G. Harry McLaughlin in 1969 as a more accurate and more easily calculated substitute for the Gunning-Fog Index. To make calculating a text's readability as simple as possible an approximate formula was also given — count the words of three or more syllables in three 10-sentence samples, estimate the count's square root (from the nearest perfect square), and add 3.

Applying SMOG to other languages[4] lacks statistical validity.

FormulasEdit

To calculate SMOG

  1. Count a number of sentences (at least: 10 from the start of a text, 10 from the middle, and 10 from the end).
  2. In those sentences, count the polysyllables (words of 3 or more syllables).
  3. Calculate using
    
\mbox{grade} = 1.0430 \sqrt{ 30\times\frac{\mbox{number of polysyllables}}{\mbox{number of sentences}} } + 3.1291

A version is also given which is more easily used for mental math and is sometimes known as the SMOG Index:

  1. Count the number of polysyllabic words, excluding proper nouns, in a sample of thirty sentences.
  2. Take the square root of the nearest perfect square
  3. Add 3

See also Edit



ReferencesEdit

  1. Hedman, Amy S. (January 2008). Using the SMOG formula to revise a health-related document. American Journal of Health Education 39 (1): 61-64.
  2. Ley, P., T. Florio (February 1996). The use of readability formulas in health care. Psychology, Health & Medicine 1 (1): 7–28.
  3. McLaughlin, G. Harry (May 1969). SMOG Grading — a New Readability Formula. Journal of Reading 12 (8): 639–646.
  4. Contreras, A., Garcia-alonso, R.; Echenique, M.; Daye-contreras, F. (1999). The SOL Formulas for Converting SMOG Readability Scores Between Health Education Materials Written in Spanish, English, and French. Journal of Health Communication 4 (1): 21–29.

External links Edit

This page uses Creative Commons Licensed content from Wikipedia (view authors).

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.

Also on Fandom

Random Wiki