A Systematic Review of Modifications and Validation Methods for the Extension of the Keystroke-Level Model

<div>Distribution of primary studies across the seven digital sources utilised in this systematic review. The eighth digital source (Web of Science) is not shown due to overlapped content with earlier sources.</div>

Advances in Human-Computer Interaction

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Figure 4

Figure 4: A Systematic Review of Modifications and Validation Methods for the Extension of the Keystroke-Level Model 