What is the main idea of the passage?

Conversation partners build efficient shared labels through confirmation and repair, but those labels may not work for newcomers. (The passage traces a label from detailed description to efficient shorthand, then shows why a newcomer may lack the pair’s shared history.)

Why might the experienced speaker need to expand the label for a newcomer?

The newcomer did not participate in the exchanges that gave the short label its local meaning. (The efficiency belongs to the original pair because their earlier confirmation established what elbow referred to in that task.)

What does “local” mean in the phrase “its local history”?

specific to the pair and their shared situation (The label’s history was created by these partners during their task, so local means particular to their shared interaction.)

How can listeners respond while a pair builds common ground?

With questions, corrections, or signs of understanding (The second paragraph explicitly lists questions, corrections, and signs of understanding as listener responses.)

How Shared Labels Take Shape: Level 4 Reading Comprehension Questions

Two volunteers are sorting unfamiliar hardware during a phone call. One describes a metal piece as the bent silver strip with two holes. After the other finds it and confirms the match, both begin using elbow as its short name. A long description has become a short shared label.

Psychologists study this kind of coordination by giving pairs unusual shapes or objects that lack familiar names. Early descriptions are often detailed because speakers cannot assume which feature a partner will notice. Listeners respond with questions, corrections, or signs of understanding. Through this exchange, the pair builds common ground: information each person has reason to treat as shared.

On later rounds, the same partners can use shorter expressions. The efficiency belongs to the pair, however, not automatically to everyone who knows the language. A newcomer hearing elbow may imagine a bent arm rather than a small metal strip. The experienced speaker must expand the label again or explain its local history.

Conversation, then, is not simply a package sent from one mind to another. Speakers propose descriptions, listeners test them, and both repair failures. Even a quick confirmation does work: it helps turn a private guess into a usable reference. Shared labels save effort because earlier cooperation remains available inside later words.

Comprehension questions