The essays in this volume are intended to help social scientists do better comparative research and thereby to improve our possibilities for creating more satisfactory explanations or theories. These broad aims are advanced throughout the book in serval ways: (1) by an identification and assessment of the methodological strategies of exceptionally important comparativists, past and present; (2) by an explication and refinement of logics of procedure that are central to many types of comparative research; (3) by a presentation of new research models that link or bridge heretofore separate lines of comparative inquiry; and (4) by the definition of methodological criteria by which theories and conceptual frameworks can be more fruitfully related to and qualified by comparative studies. Specific problems such as comparability, causal inference, conceptualization, measurement, and sampling are addressed in various sections of particular essays. –From the Preface This title is part of UC Press’s Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1971.