In a new study titled ‘Mating strategy flexibility in the laboratory: Preferences for long- and short-term mating change in response to evolutionarily relevant variables’, the research team captured the relationship preferences of 151 heterosexual male and female volunteers (75 men and 76 women) by asking them to look at pictures of 50 potential partners, and to indicate whether they would prefer a long or short-term relationship with each. Then, the researchers showed the participants a series of images of luxury items related to wealth, including fast cars, jewellery, mansions, and money.