Color is present in every aspect of human life, and color is driving our decisions. In the digital computer warning realm, in which a warning message is a communication mechanism, color represents an important design element, which aims at preventing the hazard and reducing negative outcomes...

A multi-sided platform can only succeed if a critical mass of users can join. This is a necessary, but not sufficient, condition for a platform's success. However, there is a limited understanding of the factors that contribute to reaching such critical mass. In this study we identify ways to...