LIX

LIX is a readability measure indicating the difficulty of reading a text^[1] developed by Swedish scholar Carl-Hugo Björnsson. It is computed as follows:

$\text{LIX} = \frac{A}{B} + \frac{C \cdot 100}{A}$, where

$A$ is the number of words,

$B$ is the number of periods (defined by period, colon or capital first letter), and

$C$ is the number of long words (more than 6 letters).^[2]

References

1. http://reap.cs.cmu.edu/Papers/IASTED-HCI-05-jonbrown.pdf

Further reading

• Björnsson, C. H. (1968). Läsbarhet. Stockholm: Liber.
• Björnsson, C. H. (1971). Læsbarhed. København: Gad.

External links

• Official website
• Calculator for LIX and other readability indices