Abstract:
This thesis deals with the incidental acquisition of unknown words while reading foreign language texts, and aims at describing the various dimensions of this process from a global, cognitive-constructivist perspective.
The theoretical part presents cognitive models of word meaning and text meaning, and describes the interaction of these two levels of knowledge in the text comprehension process. Within this framework, the process of building up knowledge about word meaning is seen as an active construction process on the part of the learner. The conditions for incidental vocabulary acquisition as such result from the interaction of the respective textual, learner-specific and situational factors, which determine the degree to which the meaning of a new word can be specified as well as the actual degree of focus on this word during the reading process.
In the empirical part, the theoretical investigations are complemented by results from explorative think-aloud case studies. On the one hand, the process of specifying word meaning is examined by means of analysing the learner verbalisations. Insights include characteristic features and phases of the process as well as specific learner strategies which are applied. On the other hand, the effects of the initial conditions and the actual meaning specification process on vocabulary acquisition are discussed in the light of the results of unannounced vocabulary post-tests.