Joint stimulus control occurs when responding is determined by the correspondence of elements of a complex sample and a complex comparison stimulus. In academic settings, joint stimulus control of behavior would be evidenced by the selection of an accurate description of a complex graph in which each element of a graph corresponded to particular sentences and phrases in the description. The current research describes a test that detected various degrees of joint stimulus control by different combinations of elements, ranging from complete joint control by all elements to a lack of joint control by any elements. (Contains 4 tables and 3 figures.)