TOEFL TPO None Speaking Task 3 Sample: Explain how the example from the professor's lecture illustrates the concept of an information cascade.

1.子项得分

Delivery: 2 Language Use: 2 Topic Development: 2

2.预估分数

Estimated Score: 15

3.表达

在表达方面，发言者的语速不够流畅，有时会出现不必要的停顿。此外，发音也有一些不准确的地方。建议发言者多加练习，提高语言的流利度和准确性。可以尝试朗读练习和模仿地道英语发音，以提高口语表达能力。

4.话题发展

The response does address the concept of information cascade, but it could be better organized and clearer in its explanation. The speaker should first briefly explain the concept of information cascade from the reading passage, then describe the professor's example in detail, and finally connect the example to the concept by explaining how it illustrates an information cascade. To improve topic development, the speaker should practice organizing their thoughts and providing a more coherent response with clear connections between ideas and sufficient support or examples.

5.语言使用

Original Answer: The passage describes a phenomenon called information cascade, which means when the decision of a field affects the behavior of a large group. The professor gave us an example to explain the concept. While he traveled in a new city, he had a guidebook with a location restaurant. First, he chose an Italian restaurant with a high rating, but it was very crowded. As a result, he chose a French place to eat with a lower rating. But more people came to eat there because the professor ate in the restaurant. When he went to a hotel, the Italian restaurant still had many people.

Corrected Answer: The passage describes the phenomenon of information cascade, which occurs when the decision of a few influences the behavior of a larger group. The professor provided an example to illustrate this concept. While visiting a new city, he consulted a guidebook for restaurant recommendations. Initially, he considered an Italian restaurant with high ratings but found it to be empty. Consequently, he opted for a French restaurant with lower ratings that appeared more crowded. More people continued to arrive at the French restaurant, likely influenced by its popularity. Later, when passing by the Italian restaurant again, it remained relatively empty. (修改了句子结构、词汇和语法，使表达更自然流畅。例如，“phenomenon called information cascade”改为“phenomenon of information cascade”，“a field”改为“a few”，“location restaurant”改为“restaurant recommendations”等。)

Revised Answer (140 words):

The passage introduces the phenomenon of information cascade, which occurs when the decisions of a few individuals influence the behavior of a larger group. The professor provided an example to illustrate this concept from his personal experience in a new city. He consulted a guidebook for restaurant recommendations and initially considered an Italian restaurant with high ratings. However, he found it to be empty and opted for a French restaurant with lower ratings that appeared more crowded. As more people continued to arrive at the French restaurant, it became evident that they were likely influenced by its apparent popularity. Later, when the professor passed by the Italian restaurant again, it remained relatively empty, demonstrating the impact of information cascade on people's decision-making process in this situation.

6.思维导图

• Information Cascade

  • Definition
  • Influence on larger group

• Professor's Example

  • New city
  • Guidebook for restaurant recommendations
  • Italian restaurant (high ratings, empty)
  • French restaurant (lower ratings, crowded)
  • People influenced by popularity
  • Italian restaurant remains empty

7.关键词