The Dale-Chall readability formula developed by Edgar Dale and Jeanne Chall is calculated by counting difficult words in a piece of text. Which words are counted as familiar?
The Gunning Fog index, created in 1944, is a commonly cited readability scoring formula. But, what do the scores mean? How did the formula come about? And when is the test most useful?
At least 6 out of 10 US adults who have internet access use the internet to look up health information. We are all self-diagnosing, self-prescribing and generally bypassing a visit to the GP in exchange for a quick search on Google. And it’s not just the internet where we get acquainted with health advice.
The Spache readability formula, much like the New Dale-Chall Readability Formula, uses a set of words which are familiar to students to calculate the readability of text.
Listen to someone trying to explain a high-profile error, and you’ll probably hear them say something like “Mistakes were made in carrying out the plan” or “The wrong envelope was given to the presenter.”