The special section on private events in the Spring 2000 issue of The Behavior Analyst discussed the exploration of private events. The four articles focused on conceptualizations of issues related to private events and on behavior analysts' neglect of the area. This response cites 19 data-based articles and two doctoral dissertations involving measurement of what precision teachers term inner behavior-thoughts, feelings, and urges. Of the estimated 1.2 million standard celeration charts, at least 1,600 are inner behavior charts. These extensive data indicate that people can and do count and chart their inner behavior. This response discusses findings on inner behavior and its frequency, celeration (growth), variability, and improvement using antecedent and consequent events.