MRM RURKNRGU N Reviewers Contributors Information for Authors In This Volume Ecometrics: Toward a Science of Assessing Ecological Settings, with Application to the Systematic Social Observation of Neighborhoods Stephen W. Raudenbush and Robert J. Sampson Simulating the Micro-Macro Link: New Approaches to an Old Problem and an Application to Military Coups Nicole J. Saam A Goodness-of-Fit Test for the Latent Class Model When Expected Frequencies Are Small Mark Reiser and Yiching Lin Algebraic Representations of Beliefs and Attitudes: Partial Order Models for Item Responses John Levi Martin and James A. Wiley Vii CONTENTS On a Relation Between Joint Correspondence Analysis and Latent Class Analysis Peter G.M. van der Heijden, Zvi Gilula, and L. Andries van der Ark A General Class of Nonparametric Models for Ordinal Categorical Data Jeroen K.Vermunt Testing Transitivity in Digraphs Martin Karlberg Logit Models for Affiliation Networks John Skvoretz and Katherine Faust A New Model for Information Diffusion in Heterogeneous Social Networks Vincent Buskens and Kazuo Yamaguchi