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Psychology students star in many of the studies because their professors oblige them to take part in experiments. If I am a psychology professor at Harvard it is much easier for me to conduct experiments on my own students than on the residents of a crime-ridden New York slum \u2013 not to mention travelling to Namibia and conducting experiments on hunter-gatherers in the Kalahari Desert. However, it may well be that New York slum-dwellers and Kalahari hunter-gatherers experience mental states which we will never discover by forcing Harvard psychology students to answer long questionnaires or stick their heads into fMRI scanners. Even if we travel all over the globe and study each and every community, we would still cover only a limited part of the Sapiens mental spectrum. Nowadays, all humans have been touched by modernity, and we are all members of a single global village. Though Kalahari foragers are somewhat less modern than Harvard psychology students, they are not a time capsule from our distant past. They too have been influenced by Christian missionaries, European traders, wealthy eco-tourists and inquisitive anthropologists (the joke is that in the Kalahari Desert, the typical hunter-gatherer band consists of twenty hunters, twenty gatherers and fifty anthropologists).<\/p>\n\n\n\n