Hess Cognitive Rigor MatrixWhat is it?

The Hess Cognitive Rigor Matrix (CRM) is a

model that superimposed Bloom's Taxonomy

with Norman Webb's Depth-of-Knowledge

levels. The Hess CRM assists teachers in

applying what cognitive rigor might look like in

the classroom and guides test developers in

designing test items and performance tasks.

Content-specific descriptors in each of the Hess

CRMs are used to categorize and plan for

various levels of abstraction – meaning an

analysis of the mental processing required of

assessment questions and learning tasks.

Descriptions from Hess’ Cognitive Rigor Matrix