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Adults with High-functioning Autism Process Web Pages With Similar Accuracy but Higher Cognitive Effort Compared to ControlsTo accommodate the needs of web users with high-functioning autism, a designer's only option at present is to rely on guidelines that: i) have not been empirically evaluated and ii) do not account for the di erent levels of autism severity. Before designing effective interventions, we need to obtain an empirical understanding of the aspects that speci c user groups need support with. This has not yet been done for web users at the high ends of the autism spectrum, as often they appear to execute tasks effortlessly, without facing barriers related to their neurodiverse processing style. This paper investigates the accuracy and efficiency with which high-functioning web users with autism and a control group of neurotypical participants obtain information from web pages. Measures include answer correctness and a number of eye-tracking features. The results indicate similar levels of accuracy for the two groups at the expense of efficiency for the autism group, showing that the autism group invests more cognitive effort in order to achieve the same results as their neurotypical counterparts.