Extensive Reading for Learners of German Using CALL Technologies

I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by the examiners. I understand that my thesis may be made electronically available to the public. ii The focus of this dissertation is the development and testing of a CALL tool which assists learners of German with the extensive reading of German texts of their choice. The appli-cation provides functionality that enables learners to acquire new vocabulary, analyse the meaning of complex word forms and to study a word’s semantic and syntactic features with the help of corpora and online resources. It is also designed to enable instructors to create meaningful exercises to be used in classroom activities focusing on vocabulary acquisition and word formation rules. The detailed description of the software development and implementation is preceded by a review of the relevant literature in the areas of German morphology and word forma-tion, second language acquisition and vocabulary acquisition in particular, studies on th