Toward an integrated model of sentence processing in reading In experiments investigating sentence processing eye movement measures such as fixation durations and regression proportions while reading are commonly used to draw conclusions about processing difficulties. However these measures are the result of an interaction of multiple cognitive levels and processing strategies and thus are only indirect indicators of processing difficulty. In order to properly interpret an eye movement response one has to understand the underlying principles of adaptive processing such as trade off mechanisms between reading speed and depth of comprehension that interact with task demands and individual differences. Therefore it is necessary to establish explicit models of the respective mechanisms as well as their causal relationship with observable behavior. There are models of lexical processing and eye movement control on the one side and models on sentence parsing and memory processes on the other. However no model so far combines both sides with explicitly defined linking assumptions. ...