Reply to Ternström et al.: Challenges of studying multiple outcomes simultaneously

Scholarly studies of resource commons as complex social – ecological systems have identi fi ed a suite of causal variables thatcan in fl uence outcomes (1). Chhatre and Agrawal (2) chart anew direction for studies of such systems by focusing on thesimultaneous analysis of multiple outcomes and by showing howquantitative analytic techniques can be used to compare two ormore outcomes across multiple systems. By pointing to directionsin which our and other similar future analyses can be improved,Ternström et al. (3) advance the state of discussions on forestcommons research