One purpose of this research is to develop models of cognitive processes in understanding mechanical systems. A particular focus was on the processes in mentally animating the representation of a mechanical system, and the contribution of animation graphics in comprehension. Several studies, involving eye fixations, verbal protocols, and process…

The cognitive processes in a widely used, non-verbal test of analytic intelligence--the Raven Progressive Matrices Test (J. C. Raven, 1962)--were analyzed. The analysis determined which processes distinguished between higher-scoring and lower-scoring subjects and which processes were common to all subjects and all items on the test. The analysis…

Part of a research project designed to develop a theory of the cognitive processes involved in skilled reading by the analysis of the location and duration of eye fixations, this paper concentrates on how eye fixations can be used to determine when encoding, lexical access, parsing, and integration processes are executed and how they are affected…

Two research studies were conducted to examine short term memory capacity and eye fixations as parts of the reading comprehension process. In the first study, varied aspects of the text and the readers' tasks were examined by monitoring the duration and sequence of readers' eye fixations. The results showed that readers made longer pauses at…

This research explored the fundamental processes involved in comprehending linguistic material: the duration of the process, the sequence of processes, and the sources of errors. One project examined the comprehension of affirmative and negative sentences that are read and verified with respect to a picture. A model developed to account for the…

This paper reports on a study concerned with rapid mental operations of the central processor as it performs tasks such as the comparison of rotated figures, mental arithmetic, sentence verification, and memory scanning. The central processor is the site of most of the symbol manipulation that takes place in the human information processing…