Matrix Venn diagram items contain a grid in which elements are in rows, and the sections of the Venn diagram are column headers. Online users click or touch radio buttons at the intersections of rows and columns to indicate the placement of each attribute or description in the Venn diagram. The Venn diagram shown above the matrix is a visual aid but is not required to answer the question.
Matrix Venn diagram items are accessible with audio presentation and switch responses. Matrix items can be presented in paper-and-pencil and braille test forms because there are no moving parts. Optical scan answer sheets can be used for matrix items because radio button response options can be shown as answer bubbles.