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Jennifer Lavoie

Psychologythf Crime October 5 , 2012 Week 4, class 2, Friday adaptive killing: evolutionary killing. Homicide adaptation theory Main premise: • Killing is adaptive • Psychological adaptations for killing that have evolved because they successfully solved specific recurrent adaptive problems in our past. Adaptive issues: 1. Preventing the exploitation, injury, rape, or killing of the self or kin. 2. Reputation managment against being perceived as vulnerable (i.e easily exploited, injured, raped or killed) 3. Protecting Resources 4. Eliminating resource-absorbing or costly individuals who were not genetically related. 5. Eliminating genetic relatives who are too detrimental to resource investment in genetic fitness. Texas Cadet Murder Love kills: protecting resources Diane Zamora and David Graham Romantic Rival:Adrianne Jones “..the family is perhaps the most violent social group, and the home, the most violent social setting, in our society. Aperson is more likely to be hit or killed in his or her home by another family member thatn anywehre else or by anyone else” Gelles and Straus PARENTAL INVESTMENT: parental protection evolved to expend resources including the parents own life to enhance the reproductive prospects of their descendants. (will die for child so child's life is preserved) Children = resource “black hole” Substitute parents care less profoundly for non-bio children than genetic parents. Eliminating resource absorbing or costly individuals who were not genetically related. Canadian Data: ('74- '83) Children 11x more likely to be murdered by a stepparent than a biological parent Offspring are the means to genetic posterity Yet, trade off between child's parenting needs do not always compliment the resources needed to optimize the parent. Offsprings prospects may be insufficient to offset that child's detrimental effect on the parent's capacity to adaptive optimally. Cases where parents might not invest in a newborn: 1. Doubt that offspring is their own child 2. Indications of poor offspring quality 3. External pressures: food scarcity, lack social support, demand of older offspring. INFANTICIDE: intentional killing of one's infanticide FILICIDE: Intentional killing of one's child. Eliminating genetic relatives who interfere with investments in other vehicles better able to translate resource investment into genetic fitness. Role of age in filicide: Child age: Younger children more vulnerable to filicide Child's odds
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