Year: 1991 Source: Ethology and Sociobiology, v.12, (1991), p.13-28 SIEC No: 19910328

This article uses a simple mathematical formula: reproductive potential plus the productive value of continued existence. In theory, this quantity should represent the desire for self-preservation. In asocial species, the value varies from zero up. In a highly social species like humans, however, a negative value can be obtained, with a low reproductive potential & burdensomeness to kin. Self-destructiveness is often found in indviduals with this combination. (VM)