The problem, which is obvious to anyone but a researcher with strong bias, is that 19% of all people have obviously NOT killed a leopard in the last 12 months and therefore this questioning method does not work.
Thank you for yet again demonstrating that when a layman says something is 'obvious' and refutes some researchers' work, that layman is really just full of it.
Your belief this method is scientific, valid, validated cross-culturally and for different forms of questioning shows that it is you who are the "layman", assuming by "layman" you mean person ignorant of science, gullible, and clueless.
Excellent. Please state the sample size, population size, and citation of studies that have experimentally validated this method cross-culturally and for the specific unique cultural group of ranchers in north-eastern South Africa, who have their own distinct culture curiously quite different from college students.