Anisogamy
differences between male and female sex cells
Researcher
Buss
Buss research
conducted a survey of over 10,000 adults in 33 countries and found that females reported valuing resource-based characteristics when choosing a male and males valued signs of female reproduction such as attractiveness and modernity
Methodological issue
his use of questionnaires could lead to social desirability bias with participants answering in socially desirable ways rather than honestly.
Also, 77% of participants were from Western industrial nations which means Buss might have been measuring the effects of culture rather than an evolutionary determined behaviour .