首页
登录
职称英语
A classic series of experiments to determine the effects of overpopulation o
A classic series of experiments to determine the effects of overpopulation o
游客
2024-02-29
52
管理
问题
A classic series of experiments to determine the effects of overpopulation on communities of rats was conducted by a psychologist, John Calhoun. In each experiment, an equal number of male and female rats were placed in an enclosure. The rat populations were allowed to increase. Calhoun knew from experience approximately how many rats could live in the enclosures without experiencing stress due to overcrowding. He allowed the population to increase to approximately twice this number. Then he stabilized the population by removing offspring that were not dependent on their mothers. At the end of the experiments, Calhoun was able to conclude that overcrowding causes a breakdown in the normal social relationships among rats, a kind of social disease. The rats in the experiments did not follow the same patterns of behavior as rats would in a community without overcrowding.
The females in the rat population were the most seriously affected by the high population density. For example, mothers sometimes abandoned their pups, and, without their mothers’ care, the pups died. The experiments verified that in overpopulated communities, mother rats do not behave normally. Their behavior may be considered diseased, pathological (病理学的).
The dominant males in the rat population were the least affected by overpopulation. Each of these strong males claimed an area of the enclosure as his own. Therefore, these individuals did not experience the overcrowding in the same way as the other rats did. However, dominant males did behave pathologically at times. Their antisocial behavior consisted of attacks on weaker male, female, and immature rats. This deviant (不正常的) behavior showed that even though the dominant males had enough living space, they too were affected by the general overcrowding.
Non-dominant males in the experimental rat communities also exhibited deviant social behavior. Some withdrew completely, avoiding contact with other rats. Other non-dominant males were hyperactive, chasing other rats and fighting each other.
The behavior of the rat population has parallels in human behavior. People in densely populated areas exhibit deviant behavior similar to that of rats in Calhoun’s experiments. In large urban areas, such as New York City, London, and Cairo, there are abandoned children. There are cruel, powerful individuals, both men and women. There are also people who withdraw and people who become hyperactive. Is the principal cause of these disorders overpopulation? Calhoun’s experiments suggest that it might be. In any case, social scientists and city planners have been influenced by the results of this series of experiments. [br] The main idea of this passage is that ______.
选项
A、although rats are affected by overcrowding, people arc not
B、data from experiments indicate that overcrowding may be an important cause of social pathology
C、the social behavior of rats is seriously affected by overcrowding
D、Calhoun’s experiments have influenced many people
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3492644.html
相关试题推荐
【S1】[br]【S4】D根据前文的aseriesof可知,此处应选择一个复数名词,备选项有D)exposes和O)interviews。根据前文中D
Thepassagesummarizesharmfuleffectsofanimalexperiment.However,asanimal
Thepassagesummarizesharmfuleffectsofanimalexperiment.However,asanimal
Thepassagesummarizesharmfuleffectsofanimalexperiment.However,asanimal
Thepassagesummarizesharmfuleffectsofanimalexperiment.However,asanimal
Thepassagesummarizesharmfuleffectsofanimalexperiment.However,asanimal
Thepassagesummarizesharmfuleffectsofanimalexperiment.However,asanimal
TheBushAdministrationappearsdeterminedtocontinuethewarondrugsthathas
【B1】[br]【B8】A、assumeB、determineC、criticizeD、studyB动词辨义题[考频:50]。根据逻辑可以推断这句话
Peoplewhoarehitbylightningandsurviveoftenhavelong-termeffects.Thes
随机试题
HowtoTametheAngerMonsterThreefactorscausing
[originaltext]M:Hello.W:Hello,welcometo"Advice"radioprogram.What’syou
以下关于不同项目合同类型的叙述中,不正确的是( )。A.成本补偿合同也称成本加
患者男,56岁,肝硬化3年,因肝性脑病入院。为防止患者病情加重,应给与( )。A
下列关于危险品的储存与养护说法不正确的是A.危险品应按其性质、养护要求和消防施救
小细胞肺癌化疗首选药是A.羟喜树碱 B.替尼泊苷 C.博来霉素 D.依托泊
临床诊断乳牙根尖周病不依赖于()A.疼痛 B.肿胀 C.龋洞深度 D.松动
下列各项中,通常不属于审计工作底稿包括的内容有()。A.已被取代的审计工作底稿
某建筑公司融资租赁一台施工设备,设备价格300万元,租期为6年,每年年末支付租金
女性,35岁,停经42天,阴道不规则少量淋漓出血10余天。诊断性刮宫,病理报告为
最新回复
(
0
)