A MODEL OF THE PERCEPTUAL AND CONCEPTUAL PROCESSES IN GRAPH COMPREHENSION

The article proposes that graph comprehension emerges from an integrat ed sequence of several types of processes: pattern-recognition process es that encode graphic patterns, interpretive processes that operate o n those patterns to retrieve or construct qualitative and quantitative meanings, and integrative processes that relate these meanings to the referents inferred from labels and titles. The model is supported by 2 studies that examine the pattern and durations of eye fixations as a person interprets line graphs or answers questions about line graphs that vary in type and complexity. One implication is that graph compre hension might be more accurate and more complete if the graph's format were changed or the audience were educated to lessen the burden of th e inferential, interpretive, and integrative processes.