The present research pursues the question by restating the hypothesis in a broadened form. If a "rigorous male role" is construed to mean strong demands made on the energy and time of males, then a reasonable measure of the potential "escape value" of transvestism might be given in part by the relative contribution of men and women to the basic subsistence economy. That is, male transvestism ought to appear more frequently in those societies in which males make a greater contribution to the subsistence economy than do females.