-The significant positive correlations between intrinsic motivation and usefulness and extrinsic motivation and satisfaction imply that there is a relation. This could be a relationship between how participants perceive the game elements of the apps and how useful they find an app for task management or indicate how satisfied users were with the overall product.

• Kendall’s tau as a correlation coefficient, resulting in τ = 0.48 for the categories “Motivation (intrinsic)” and “Usefulness.” This correlation is significant with z = 2.32, p < 0.05, show-ing that participants’ perception of the task managers’ use-fulness was related to how motivated they were to use the game app.
• Authors found a significant correlation between the averaged responses to the categories “Motivation (extrinsic)” and “Satisfaction,” τ = 0.51, with z = 2.48, p < 0.05. This result indicates that participants who felt good about the apps’ reward system were also more satisfied with its use.
• Another notable correlation was found between the categories “Motivation (intrinsic)” and “Comparison” (τ = -0.45, z = 2.16, p < 0.05). This implies that, whether participants preferred their standard task manager was related to whether they felt motivated by the game elements of the apps.