Notes that various procedures are available for measuring agreement among 2 or more os who classify responses among nominal categories, but that different problem situations require different measures. The general model of a contingency table with fixed margins is used to suggest (a) a measure of level of agreement among several os when compared internally,(b) a conditional measurement of agreement for several os compared internally,(c) a test for the joint agreement of several os when compared with a standard, and (d) a statistic for evaluating the pattern of agreement between 2 os. Illustrations are presented for each situation, and results of a monte carlo study of the behavior of the pattern agreement statistic are discussed.(19 ref.)(PsycINFO Database Record (c) 2016 APA, all rights reserved)