This essay seeks to initiate a discussion of the problem of scale amon
g social scientists. Long familiar to natural scientists, the problem
of scale centers on the transferability of propositions from one level
to another in the dimensions of space and time. As a means of pursuin
g this goal, the essay examines similarities and differences between s
tudies of micro-level institutions (common-pool resource [CPR] arrange
ments) and macro-level institutions (international resource regimes) g
overning human/environment relations. The conclusions are mixed. Some
concerns (for example, the importance of transparency) loom large at b
oth the micro level and the macro level. But others (for instance, the
role of culture in connection with CPRs and the centrality of domesti
c implementation in connection with international resource regimes) ar
e relevant primarily to one or the other level of analysis.