“…Evolutionary theories summarized elsewhere (Bjorklund & Kipp, 1996;Kenrick, 1994;Miller, 1994;Van de Vliert & Van Yperen, 1996;Van de Vliert, Schwartz, Huismans, Hofstede, & Daan, 1999b) state that, over many generations, colder climates evolved more positive goal interdependence and a more cooperative culture because meeting basic needs for food, safety, and security is much more demanding. Similarly, survival in very hot climates might well require much cooperation to protect primary groups against the hardships of nature and to prevent shortages of water and food.…”