Published online by Cambridge University Press: 17 July 2009
Genetic interventions make us better animals. Humans, we become, however, because of the ways that culture and our individual constructions exploit the brain and make it our servant.
(Baltes & Singer, 2001, p. 72)ABSTRACT
The human brain is formed by two interactive systems: the genetic-biological and the sociocultural systems. The brain, in turn, regulates behavior and thereby acts on the societal environment. This chapter examines how experience shapes the brain and describes the interaction of brain, behavior, and culture under conditions of extreme and traumatic stress as present in many of the world's war-torn regions. Traumatic events massively change the brain's structure and function. Within our model of biological-cultural interaction, we analyze how these experiences foster violent behavior and deal with the societal consequences of the traumatization of large parts of the population.
INTRODUCTION
In this day and age, humans are raised and live in a complex sociocultural environment with increased demands for the brain, the body, and the social structures to adapt. More information at increasingly complex levels has to be processed than ever before at an ever-increasing velocity and over an extended lifespan. This places high pressure on the individual and society to continuously adjust to new environmental conditions, resulting in a stream of continuous microstressors. At the same time, modern societies are becoming increasingly aware of the effects of macrostressors, including traumatic stress, which, although seemingly transient, may be changing the brain's processing machinery, resulting in characteristic behavioral, physiological, and psychological (mal)adaptations to environmental conditions and – when a whole community is affected – changes in the local culture.
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