A shikake is an embodied trigger for behavior change to solve social or personal issues. In this paper, we give a general statement regarding the concept of Shikakeology as the science of shikake. The mechanism behind a shikake covers a wide range of physical and psychological triggers. From a shikake point of view, physical triggers are used to ignite psychological triggers, and psychological triggers work as a driving force for changing behavior. We will describe four simple shikake cases to explain the concept of shikake as well as the mechanisms of triggers. We choose to use case studies to make readers understand the mechanism of shikake as a starting point. We also present the idea of a Shikakeology ecosystem, which is a feedback loop between citizen science, academia, and education.