There's an influential taxonomy by the anthropologist Alan Fiske, in which relationships can be categorized, more or less, into communality, which works on the principle "what's mine is thine, what's thine is mine," the kind of mindset that operates within a family, for example; dominance, whose principle is "don't mess with me;" reciprocity, "you scratch my back, I'll scratch yours;" and sexuality, in the immortal words of Cole Porter, "Let's do it."
Wg. kluczowej taksonomii Alana Fiske związki można z grubsza podzielić na: wspólnotę, działającą na zasadzie "Co moje, to twoje", mentalność widoczną np. w rodzinie, dominację, na zasadzie "Nie podskakuj", wzajemność: "Ręka rękę myje", i seksualność, wg nieśmiertelnych słów Portera: "Zróbmy to".