“…However, a closer examination of the stimuli used in the Rips and Estin (1998) study revealed that the difference in homogeneity might actually be due to a temporal aspect, rather than to physicality. Applying the distinction between events and processes provided by Vendler (1967), most of the stimuli used as "physical events" (e.g., checking out books, doing dishes, catching a plane) were truly events, but most of the "mental events" (e.g., dreaming, reading, imagining) would be more aptly classified as processes.…”