This Festschrift has been compiled to honour Günther Sigott for his notable contributions to academia in general and to the field of language testing in particular. The contributors to this volume come from all over the world, spanning regions from Austria and its neighbouring countries Slovenia and Germany, to the UK, USA, all the way to Japan and Iran. They work as test developers, teacher educators, psychometricians and researchers, taking up a variety of subjects such as washback of standardized tests, the acknowledgement of language varieties in high-stakes exams, fostering language assessment literacy or psychometric models to enhance C-test interpretations or scoring validity