Task-irrelevant data impair processing of graph reading tasks: An eye tracking study

In this study, we compared bar graphs showing task-irrelevant data points or task-irrelevant data series with a control condition using a within-subject design and eye tracking methodology. Data were analyzed using linear mixed-effects models. Results show that task-irrelevant data significantly elevated processing time, error rate and cognitive load. Even though perceptual grouping by color was expected to aid the process when a task-irrelevant data series was included in a graph, effects were strongest in this condition. Analyses of attention distribution using eye tracking measures revealed that task processing differed qualitatively between the conditions, yielding important implications for instruction.
Source: Learning and Instruction - Category: Psychiatry & Psychology Source Type: research