In this paper we show how the assumption that higher moments do not depend on the regressors can be exploited in a GMM framework, and we provide very simple estimators that are equivalent to GMM estimators. These simple estimators can be calculated by linear regressions which have been augmented...

Firms regularly introduce new, non-patentable products and innovations. When the possibility of a new product or an innovation arises to a potential seller, the seller faces a risk in successfully creating and producing a new product that consumers value above its costs. This framework enables a...