Another paper I found interesting, Selective Versus Unselective Romantic Desire. Economists set up a speed-dating experiment, measuring "percieved unselectivity" and romantic attraction. When interest in a potential partner was perceived to be unique, it tended to be reciprocated. When someone was perceived to be unselective (likely to want to date a high proportion of everyone he or she met in the experiment), they were generally undesired. These results were the same for both the men and the women.

Do people want to feel unique and special, or is there something in particular that is unappealing about unselective (desperate?) potential partners? Do you have any criticisms of this paper? What further experiments do you think would be interesting?