批判性阅读:社交媒体热传数据的可信度检验
在阅读训练中,社交媒体类文本常以统计数据、百分比和调查结论作为论据支撑观点,这类数字看上去客观中立,却最容易在传播过程中被截取或夸大。本节主要讲解如何通过追问数据来源、样本范围与呈现方式,判断一则热帖中的数字是否值得信任。
一、英文原文阅读
A recent post shared thousands of times claims that “90% of teenagers now prefer texting to talking face to face.” The figure sounds convincing, but the post offers no link to the original study. When a number is presented without a source, readers cannot tell who was surveyed, how many people took part, or how the questions were worded. A survey of fifty students in one school, for instance, cannot reasonably speak for all teenagers. Social media posts also tend to round figures up and drop the conditions attached to them, so a limited finding may appear far more general than it really is. Before accepting such a claim, readers should ask three questions: Where did the data come from? Whom does it actually describe? And has any important detail been left out?
—— 原创模拟题
二、核心英文词汇标注
- convincing /kənˈvɪnsɪŋ/ adj. 令人信服的;有说服力的。例:The figure sounds convincing.(这个数字听起来很有说服力。)
- figure /ˈfɪɡə(r)/ n. 数字;数据。在阅读中常指统计数值,需与表示”人物”的义项区分。
- survey /ˈsɜːveɪ/ v. & n. 调查;问卷调查。常见搭配:conduct a survey(开展调查)。
- word /wɜːd/ v. 措辞;表述。例:how the questions were worded(问题是如何措辞的)。此处为动词用法,是阅读中的常考义项。
- round up 把(数字)向上取整;抬高。例:round figures up(把数字往上凑整)。
- attach /əˈtætʃ/ v. 附加;把……附在……上。例:the conditions attached to them(附加在它们之上的条件)。
- leave out 省略;遗漏。例:has any important detail been left out(是否有重要细节被省略)。
三、阅读理解要点分析
这段文字围绕一个被大量转发的数据展开,逻辑推进分为三层,阅读时可按层定位信息。
- 第一层:提出被引用的数据。 首句给出热帖结论”90% of teenagers now prefer texting to talking face to face”。注意 claims 一词,它表明作者对该数据持保留态度,并未认可其真实性。
- 第二层:指出数据的缺陷。 文中用 but 转折,指出该帖没有提供原始研究链接。随后说明缺少来源会带来三个无法判断的问题:调查对象是谁、参与人数多少、问题如何措辞。for instance 引出”某校五十名学生”的例子,用来证明小样本不能代表全体青少年。
- 第三层:总结判断方法。 文末以三个问句收束——数据从何而来、实际描述的是谁、是否遗漏了重要细节。这三问即批判性阅读数据类文本的操作框架。
从命题角度看,此类文本常考查:作者对数据的态度(保留、怀疑而非认同)、举例的作用(证明样本局限)、以及主旨句的概括(如何检验数据的可信度)。判断作者态度时,claims、sounds convincing 等词提示作者并未采信;判断举例作用时,需回到例子所支撑的上一句观点。
四、技巧点拨
面对社交媒体类文本中的统计数据,可按以下顺序检验。
- 追问来源(source)。 数据是否注明出处?无来源的数字只能视为”声称”,不能视为”事实”。文中 without a source 正是提示信号。
- 追问样本(sample)。 调查对象是谁、人数多少、抽样方式如何?样本越小、范围越窄,结论可推广的程度越低。识别表达:a survey of fifty students in one school。
- 追问呈现方式(presentation)。 数字是否被凑整、被去掉限定条件?识别表达:round figures up、drop the conditions attached to them。
- 关注限定词与情态动词。 may appear、tend to、cannot reasonably speak for 等表达都暗示结论的适用范围有限,是判断作者语气的重要线索。
在「李校来啦英语」AI英语提升系统中,这类数据类文本通常会结合实际语境进行训练,帮助学习者在真实语篇中辨认作者的立场与论证结构。
五、小练习
根据上文内容,完成下列题目。
1. What is the author’s attitude towards the claim in the post?
A. Fully supportive B. Doubtful C. Indifferent D. Angry
2. Why does the author mention “a survey of fifty students in one school”?
A. To prove that most surveys are reliable.
B. To show that a small sample cannot represent all teenagers.
C. To explain how to design a questionnaire.
D. To suggest that teenagers dislike being surveyed.
3. Which of the following is NOT mentioned as a question readers should ask?
A. Where the data came from.
B. Whom the data actually describes.
C. Whether any important detail has been left out.
D. How much the post cost to publish.
参考答案与解析
- 1. B。文中用 claims、sounds convincing 以及一连串质疑句,表明作者对该数据持怀疑态度,并未认同其真实性。
- 2. B。该例子出现在”小样本不能代表全体”这一观点之后,for instance 表明其作用是用具体例子支撑上一句观点。
- 3. D。文末列出的三个问题分别对应来源、对象与遗漏细节,发布成本并未提及。
