Charles Darwin's scientific contributions

Citations

... A formidable puzzle arises with suicide, "the act of deliberately killing oneself" (W.H.O., 2014, p. 12), because the behavior has almost certainly been under intense negative selective pressure, now and in the evolutionary past. It presents all three necessary and sufficient conditions-variability, heritability, and a differential effect on reproductive fitness (Darwin, 1859)-for natural selection to operate (Soper, 2018). The last of these, suicide's impact on the propagation of genetic material across generations, is deleterious in the extreme (Gunn, Malo, & Soper, 2021). ...