The history of the evaluation of non-English written materials through the use of various mathematical formulae is reviewed. This process began in 1939 with Tharp's work in French, and has continued until the present. Formulas have been developed for Spanish, Russian, German, Hebrew, Chinese, and Vietnamese. In Europe, modifications of the Flesch…

The development of readability formulas for the evaluation of foreign language texts began with research in the United States on reading materials used in second language learning and has extended to many other countries first by adaptation of formulas intended for English language texts and then by original investigation. There exist now many…

Describes recent Austrian research concerning readability formulas, especially the Swedish Lix formula. Describes a prototype for a system of evaluating the individual variables that contribute to the difficulty of student reading materials. (FL)