TY - BOOK AU - Holland,Paul W. AU - Leinhardt,Samuel ED - National Bureau of Economic Research. TI - The Statistical Analysis of Local Structure in Social Networks T2 - NBER working paper series PY - 1974/// CY - Cambridge, Mass. PB - National Bureau of Economic Research N1 - June 1974; Hardcopy version available to institutional subscribers N2 - We introduce the concept of a triad census of a digraph arid show how it can be used to enumerate various types of subgraph configurations. We give the basic probabilities needed for computing means and variances for a triad census under the U-MAN distribution for digraphs. These concepts are combined to provide a way of testing propositions about social structure using sociometric data. An application to 408 sociograms is given UR - https://www.nber.org/papers/w0044 UR - http://dx.doi.org/10.3386/w0044 ER -