Merlin C. Wittrock and the Revision of Bloom's Taxonomy

Merl Wittrock, a cognitive psychologist who had proposed a generative model of learning, was an essential member of the group that over a period of 5 years revised the Taxonomy of Educational Objectives, originally published in 1956. This article describes the development of that 2001 revision (Anderson and Krathwohl, Editors) and Merl's contributions to that effort.