In the model, allocations are more closely aligned with women's need in reserved GPs.  The literature suggests that the reason why this happens is that women are more responsive to the complaints of women and in general, more altruistic. However, in these paper, it is found that this happens because the reservation affects the cost of complaining. Moreover, when they test that the reservation reduces the cost of speaking for women, they also show that the nature of the complaint does not depend on the intensity of the preferences, due to in reserved GPs there are more complaints by women. Then, the hypothesis that this measurement might be biased, by assuming that the cost of speaking is higher for women so women will complain only extreme preferences while men could express their opinion about everything, is rejected.