Before revision:  Here we develop a normative model for collective decision making in a network of agents performing a two-alternative forced choice task. We assume that rational (Bayesian) agents in this network make private measurements , and observe the decisions of their neighbors until they accumulate sufficient evidence to make an irreversible choice .
After revision:  Here we derive network models of rational (Bayes optimal) agents who accumulate private measurements and observe decisions of their neighbors until they accumulate sufficient evidence to make an irreversible choice .