With formal theoretical conditions as premise, this study develops a formal empirical structure which facilitates, simultaneously inferences in respect of each of rationality and efficiency of pricing of idiosyncratic risk. Using exactly the same data, the new empirical structure revolves around...

We hypothesise and confirm a previously unnoticed pattern within pre-existing data on the endowment effect, collected via seven experiments employing the original design. Subjects with low valuations in binary choice relative to other subjects set a proportionally higher willingness to accept....