The Rationalization Movement in German Industry: A Study in the Evolution of Economic Planning examines how "rationalization" reshaped German economic life between the brief prosperity of 1924-1929 and the collapse that followed. Moving beyond surface "kaleidoscopic" change, the book traces deeper structural shifts away from laissez-faire--through cartels, standardization boards, trade associations, and state coordination--toward an integrated order in which technical efficiency, corporate power, and public authority converged. Beginning with the "negative" phase of retrenchment--closing obsolete plants, consolidating firms, and cleaning up inflation-era distortions--the study follows the transition to "positive" rationalization: scientific management, standardization, cooperative research, and large-scale reorganization in heavy industry, transport, and utilities. Against this program, the author sets the era's hard constraints: reparations and high capital costs, fractured markets after Versailles, political radicalization right and left, and social policies that raised costs without parallel gains in capacity utilization. Written in 1933, the analysis situates rationalization within a broader corporatizing drift--an "interweaving" of economic, political, social, and cultural questions that pushed Germany beyond Manchester liberalism toward planning and, ultimately, authoritarian coordination. The book weighs competing claims that rationalization either mitigated or intensified the crash, concluding that as enacted it bore real responsibility for deepening instability even while revealing the possibilities--and limits--of systematic reorganization. Clear-eyed about both achievements and blind spots, this study illuminates how technical programs become political settlements, how gains in productivity redistribute risks and power, and how "efficiency" can mask contested ends. Its enduring takeaway is that rationalization is never merely a toolkit of methods; it is a project of governance whose outcomes depend on whose interests are reconciled--and whose are excluded--when economies are planned. 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 1933.