考研真题做题记录Global cascade
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In his book The Tipping Point, Malcolm Gladwell argues that social epidemics are driven in large part by the acting of a tiny minority of special individuals, often called influentials, who are unusually informed, persuasive, or well-connected. The idea is intuitively compelling, but it doesn't explain how ideas actually spread.
The supposed importance of influentials derives from a plausible sounding but largely untested theory called the "two step flow of communication": Information flows from the media to the influentials and from them to everyone else. Marketers have embraced the two-step flow because it suggests that if they can just find and influence the influentials, those selected people will do most of the work for them. The theory also seems to explain the sudden and unexpected popularity of certain looks, brands, or neighborhoods. In many such cases, a cursory search for causes finds that some small group of people was wearing, promoting, or developing whatever it is before anyone else paid attention. Anecdotal evidence of this kind fits nicely with the idea that only certain special people can drive trends
In their recent work, however, some researchers have come up with the finding that influentials have far less impact on social epidemics than is generally supposed. In fact, they don't seem to be required of all.
The researchers'argument stems from a simple observing about social influence, with the exception of a few celebrities like Oprah Winfrey—whose outsize presence is primarily a function of media, not interpersonal, influence—even the most influential members of a population simply don't interact with that many others. Yet it is precisely these non-celebrity influentials who, according to the two-step-flow theory, are supposed to drive social epidemics by influencing their friends and colleagues directly. For a social epidemic to occur, however, each person so affected, must then influence his or her own acquaintances, who must in turn influence theirs, and so on; and just how many others pay attention to each of these people has little to do with the initial influential. If people in the network just two degrees removed from the initial influential prove resistant, for example from the initial influential prove resistant, for example the cascade of change won't propagate very far or affect many people.
Building on the basic truth about interpersonal influence, the researchers studied the dynamics of populations manipulating a number of variables relating of populations, manipulating a number of variables relating to people's ability to influence others and their tendency to be influenced. Our work shows that the principal requirement for what we call "global cascades"– the widespread propagation of influence through networks – is the presence not of a few influentials but, rather, of a critical mass of easily influenced people, each of whom adopts, say, a look or a brand after being exposed to a single adopting neighbor. Regardless of how influential an individual is locally, he or she can exert global influence only if this critical mass is available to propagate a chain reaction.
a cursory search for causes 粗略的原因挖掘
whose outsize presence is primarily a function of media他们的巨大影响力主要是媒体的作用
For a social epidemic to occur, however, each person so affected, must then influence his or her own acquaintances, who must in turn influence theirs, and so on; and just how many others pay attention to each of these people has little to do with the initial influential.然而,要想发生一场社会流行事件,每个受影响的人都必须影响自己的熟人,而熟人又必须影响自己的熟人,依此类推;有多少人关注这些人与最初的影响力没有多大关系。
manipulating a number of variables/ relating to people's ability to influence others /and their tendency to be influenced.操纵许多变量(与人们影响他人的能力的变量,及其受影响的趋势相关的变量)
a critical mass of easily influenced people足够多数量,易受影响的人
each of whom adopts, say, a look or a brand after being exposed to a single adopting neighbor这些人在接触其他正在接受(这类事)的邻居时,也都去接受、讨论一本书或一个品牌,才能形成global cascade 全球级联效应
The readiness to be influenced 被影响的意愿(就是说除非被影响者接受了)
31. By citing the book The Tipping Point, the author intends to B
[A] analyze the consequences of social epidemics
[B] discuss influentials' function in spreading ideas
[C] exemplify people's intuitive response to social epidemics
[D] describe the essential characteristics of influentials.
32. The author suggests that the "two-step-flow theory" D
[A] serves as a solution to marketing problems
[B] has helped explain certain prevalent trends
[C] has won support from influentials
[D] requires solid evidence for its validity
33. What the researchers have observed recently shows that A
[A] the power of influence goes with social interactions
[B] interpersonal links can be enhanced through the media
[C] influentials have more channels to reach the public
[D] most celebrities enjoy wide media attention
34. The underlined phrase "these people" in paragraph 4 refers to the ones who D C
[A] stay outside the network of social influence
[B] have little contact with the source of influence
[C] are influenced and then influence others
[D] are influenced by the initial influential
35. what is the essential element in the dynamics of social influence? B C
[A] The eagerness to be accepted
[B] The impulse to influence others
[C] The readiness to be influenced
[D] The inclination to rely on others