Full-text resources of CEJSH and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl


2006 | 2 | 87-100

Article title

Readability index and the level of text difficulty


Selected contents from this journal

Title variants

Languages of publication



In linguistics, the Gunning-Fog Index is a test designed to measure the readability of a sample of English text. The readability index is based on two criteria: a syntactic (the length of text sentences) and a semantic one (the number of polysyllabic words). The mathematical algorithm lets then establish the text difficulty to its potential reader. The resulting number is an indication of the number of years of formal education that a person requires in order to easily understand the text on the first reading. That is, if a passage has a fog index of 12, it has the reading level of a U.S. high school senior. The paper presents an attempt to adopt the index elaborated for English for measuring readability of texts written in Polish and shows the possibility of its implementation in the area of teaching Polish as a foreign language.


  • A. Seretny, Uniwersytet Jagiellonski, Wydzial Polonistyki, Centrum Kultury i Jezyka Polskiego, ul. Golebia 20, 31-007 Kraków, Poland


Document Type

Publication order reference


CEJSH db identifier

YADDA identifier

JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.