Adaptation of the System Usability Scale for User Testing with Children

In this paper, we describe a pilot study in which we adapted and tested the System Usability Scales (SUS) for children between ages of 7-11. We began the study with interviews with four elementary school teachers in which we asked their help with modifying the SUS usability statements for children. We then tested those questionnaire statements with 30 children after they completed puzzles in mobile apps; we assessed the statements' understandability, dimensionality, construct validity and reliability. Our adapted SUS statements were mostly understandable. A Principal Component Analysis resulted in a four-Component model; two of those components were established as reliable. However, we were only able to support construct validity for four questionnaire statements (and none of the four Components). This pilot study contributes to the knowledgebase of user testing with children.