Figure 4. Fixation duration by complexity and content (error bars = se)
RQ2. To what extent does a user’s cognitive ability affect engagement with educational applications?
To determine whether cognitive abilities affect how successfully children engage with tablet computes in a learning context, scores on the memory and attention tasks were used to identify homogenous groups of participants who shared similar cognitive profiles. To this end, a K-means cluster analysis (a hierarchical clustering algorithm based on Euclidian distances) was performed on participants’ performance on the forward digit span, reverse digit span, spatial span, and controlled attention tasks. The cluster solution grouped participants into two relatively