Recent years have witnessed a considerable increase in the interest in international reading literacy studies, such as PISA. The results of these studies, in turn, are often the basis on which nations make educa-tional decisions today. But to what extent are the results reliable and valid? To what extent are the decisions based on them fair and well-founded? The answer lies largely in the quality of the translations used in these studies - in the extent to which the texts and translations used in these studies are equivalent to each other and thus equally easy or difficult to read. This study...