“…The welfare measure is computed by augmenting the model structure with the following equations: for , which in recursive form read: Because of agents' heterogeneity, individual welfare functions must be aggregated into a social welfare function. We follow Lambertini, Mendicino, and Punzi (), Mendicino and Pescatori (), and Rubio () and define the social welfare function as a weighted average of individual welfare as follows: where and , so that given a constant stream of final consumption X , the two agents receive the same level of utility. In the following, we fo...…”