is true as well. Psychological Inquiry, 23, 166-171. It is also unclear, therefore, why we would expect a biological group selection theory to make any predictions that are not already made by an individual-level theory. First, as elucidated by Richard Lewontin in 1970, natural selection applies to any entity that follows certain rules. One is eusociality in insect taxa such as bees, ants, and termites, whose worker or soldier castes forgo their own reproduction and may sacrifice their lives to benefit their fellows, as when a bee dies when stinging an invader. "Historical genetics: Spatiotemporal analysis of the formation of the Brazilian population" (PDF). Pmid.CS1 maint: Explicit use of. Durham, NC: Duke University Press. " Mixed Race Day " ( Dia do Mestiço ) is observed annually on June 27, three days after the Day of the Caboclo, in celebration of all mixed-race Brazilians, including the caboclos. After all, group selection sounds like a reasonable extension of evolutionary theory and a plausible explanation of the social nature of humans.
Essays like Steven Pinker's attempt to set things straight, but despite many such clear arguments, the debate goes. What are the predictions of the two theories here? Although many people claim that their opinion about death penalty is based on efficiency (partisans argue it deters crimes, opponents that it has no effect several studies have shown that, many people would actually continue to support death penalty even if it had no deterrent. Group selection as an explanation of the traits of groups. 2007, Oxford University Press: Oxford. I favor an alternative that might as well be called heterarchic pathway feedback theory.
For this reason, the theory is often called "multilevel selection" rather than "group selection." This all sounds admirably ecumenical and nonreductionist, but my arguments will also apply to multilevel selection. It is just good science.
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