The IJAMPS (International Journal of AMP Science) recently published data on this. Apparently, all women of the world have similar XX chromosomes. One of those chromosomes produce heightened arousal in women (either intentional or unintentional) when they are exposed to regular heightened attention via physical contact, gifts, jewelry, monetary gain, or obvious insincere baiting. This can occur at different levels and timelines depending upon the arousal method used by males, where the XY chromosome is known to cause men to think with the wrong head. The study suggests that there is no difference between a woman in a dating situation and those being compensated for services. From an economic standpoint, the study suggests that the total expenditure of time and expense in these situations can be considerable. To avoid such economic detriment, the study suggests simply that deficient XY chromosome men find a woman who will immediately provide required services voluntarily or for a fee when first encountered thus limiting the effort to secure such a result. The study also refers men to an earlier publication: "Belt Notching: Why it only matters to the Notcher".