Economy and Society in an Earlier America
提出社会变量（如价值观、垂直流动、政治社会权力、技术和法律）的变化与经济增长或衰退相关，并以西欧中世纪早期和美国殖民及内战前时期为例说明这些联系。
I suggest here that change in a number of social variables, including values, vertical mobility, political and social power, technology and law, appear to be associated with economic growth or decline and that the study of economic history would be enriched by investigations of the nature and timing of those linkages. Illustrative models of the linkages are drawn for the early Middle Ages in Western Europe and for the colonial and antebellum periods of American history.