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Question

Difficulty: EasyMain Idea and Primary Purpose

In the early twentieth century, Andrew Ellicott Douglass, an astronomer seeking to track historical solar cycles, realized that variations in annual tree-ring width reflected local precipitation patterns. When Southwestern archaeologists recognized that Douglass's wood samples contained overlapping ring sequences, they provided him with timber fragments from ancient Pueblo settlements, hoping to establish an absolute chronology for regional pre-Columbian sites. Historically, scholars framed this collaboration as a straightforward, harmonious application of astronomical method to archaeological inquiry. However, recent archival analysis reveals that the integration of dendrochronology was deeply fraught with methodological conflict. Archaeologists initially resisted Douglass's reliance on statistical master chronologies, arguing that local microclimatic anomalies rendered cross-dating unreliable across distant valleys. Conversely, Douglass dismissed traditional archaeological stratigraphy as inherently imprecise. The eventual adoption of tree-ring dating was therefore not a seamless interdisciplinary transfer, but rather the result of decades of tense negotiation and empirical compromise over how regional climate data should be reconciled with site-specific stratigraphy.

Which of the following best states the primary purpose of the passage?

  1. To reassess a historical collaboration by demonstrating that its outcome emerged from ongoing methodological tension rather than effortless interdisciplinary integration.Answer
  2. B
    To detail the technical procedure that Andrew Ellicott Douglass used to construct statistical master chronologies from Southwestern wood samples.
  3. C
    To argue that tree-ring dating has ultimately proven to be less accurate than traditional archaeological stratigraphy for dating pre-Columbian sites.
  4. D
    To explain how early twentieth-century astronomers managed to prove the existence of historical solar cycles using Southwestern precipitation patterns.
  5. E
    To condemn early Southwestern archaeologists for their stubborn refusal to embrace modern scientific methods developed outside their discipline.

Answer

The primary purpose of the passage is to reassess a historical collaboration by demonstrating that its outcome emerged from ongoing methodological tension rather than effortless interdisciplinary integration.
The passage primarily serves to reexamine the historical relationship between astronomy and archaeology in the context of tree-ring dating. By contrasting the traditional view of seamless interdisciplinary success with archival evidence of persistent methodological disagreements, the author demonstrates that the integration of dendrochronology was achieved through complex negotiation rather than instant agreement.

Step-by-Step Solution

1
Identify the structural shift introduced by the transition word 'However'.
The text contrasts a traditional view (that the collaboration was straightforward and harmonious) with a new view revealed by recent archival analysis (that integration was fraught with conflict).
Main idea and primary purpose in GRE passages are frequently defined by the author's pivot away from a traditional consensus toward a nuanced reevaluation.
2
Synthesize the author's main conclusion at the end of the passage.
The author concludes that the adoption of tree-ring dating was the result of 'decades of tense negotiation and empirical compromise' between two disciplines.
The concluding sentence provides the overarching synthesis of the entire text.
3
Evaluate the choices to find the one that reflects this reevaluation of interdisciplinary friction.
The option asserting that the passage reassesses a historical collaboration by highlighting methodological tension correctly captures the primary purpose.
It encompasses both the revisionist historical framing and the central theme of methodological friction.

Key Concept

Primary Purpose and Main Idea Identification
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Topics

Main Idea and Primary Purpose

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