The proposition that event taxonomies have a "basic" level was tested. In the first two tasks of the experiment, taxonomically related event categories were elicited. Nine taxonomies were constructed from subjects’ responses on these tasks. In the third task, subjects listed attributes for events categories from the three levels of abstraction of these taxonomies. A single, common level of abstraction (the basic level) was identified. Subjects listed significantly more attributes for basic categories than for superordinate categories, but not significantly more attributes for the lower, subordinate-level categories. Further analyses showed that basic and subordinate categories elicited a greater number of concrete and event-related features than action and person related features, and that superordinate categories showed the opposite trend. These findings are discussed in terms of general principles of categorization applied to events, objects, and scenes, and the particular characteristics of events.