刘文勇黄金阅读真题侵略性行为(必威体育精装版pdf版本).docxVIP

智课网TOEFL备考资料 刘文勇黄金阅读真题：侵略性行为(必威体育精装版pdf版本) 摘要： 必威体育精装版版《刘文勇黄金阅读7.0版本》高清PDF格式支持免费下载，下面是小编整理的刘文勇黄金阅读真题：侵略性行为(必威体育精装版pdf版本)，希望对大家备考托福有所帮助。  AGGRESSION侵略性行为  When one animal attacks another, it engages in the most obvious example of aggressive behavior. Psychologists have adopted several approaches to understanding aggressive behavior in people. The Biological Approach. Numerous biological structures and chemicals appear to be involved in aggression. One is the hypothalamus, a region of the brain. In response to certain stimuli, many animals show instinctive aggressive reactions. The hypothalamus appears to be involved in this inborn reaction pattern: electrical stimulation of part of the hypothalamus triggers stereotypical aggressive behaviors in many animals. In people, however, whose brains are more complex, other brain structures apparently moderate possible instincts. An offshoot of the biological approach called sociobiology suggests that aggression is natural and even desirable for people. Sociobiology views much social behavior, including aggressive behavior, as genetically determined. Consider Darwins theory of evolution. Darwin held that many more individuals are produced than can find food and survive into adulthood. A struggle for survival follows. Those individuals who possess characteristics that provide them with an advantage in the struggle for existence are more likely to survive and contribute their genes to the next generation. In many species, such characteristics include aggressiveness. Because aggressive individuals are more likely to survive and reproduce, whatever genes are linked to aggressive behavior are more likely to be transmitted to subsequent generations.  The sociobiology view has been attacked on numerous grounds. One is that peoples capacity to outwit other species, not their aggressiveness, appears to be the dominant factor in human survival. Another is that there is too much variation among people to believe that they a