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Difficulty: Very hardDistinguishing Main Idea from Supporting Evidence

Read the following passage carefully:

Economists studying monetary policy transmission have traditionally emphasized the interest rate channel, asserting that central bank policy rate alterations influence commercial lending rates, thereby modulating capital investment and aggregate demand. However, empirical anomalies observed during recent liquidity traps suggest that this traditional framework significantly overstates the direct responsiveness of corporate investment to benchmark interest rates. Instead, corporate balance-sheet resilience—specifically liquidity buffers and leverage ratios—mediates the real-economy impact of monetary intervention.

To demonstrate this mediation, empirical studies analyze corporate bond spreads during periods of balance-sheet stress. When firm balance sheets are severely degraded, even substantial policy rate cuts fail to lower corporate borrowing costs because credit risk premiums widen proportionally. Conversely, firms holding robust cash reserves maintain investment trajectories irrespective of minor central bank tightenings. Furthermore, survey data reveals that capital expenditure decisions are primarily dictated by revenue expectations rather than marginal borrowing costs.

Consequently, monetary authorities cannot rely solely on benchmark policy rate adjustments to stimulate economic activity during systemic downturns; effective intervention requires targeted balance-sheet support mechanisms.

Based on the passage, match each cited claim or excerpt on the left with its corresponding structural function within the author's overall argument on the right.

  • Monetary authorities cannot rely solely on benchmark policy rate adjustments during systemic downturns, requiring targeted balance-sheet support mechanisms instead.Overarching Main Idea / Primary Authorial Conclusion
  • The traditional framework of monetary transmission significantly overstates the direct responsiveness of corporate investment to benchmark interest rates.Intermediate Conclusion / Core Analytical Claim
  • When firm balance sheets are severely degraded, substantial policy rate cuts fail to lower corporate borrowing costs due to widening credit risk premiums.Primary Supporting Evidence / Empirical Illustration
  • Survey data reveals that capital expenditure decisions are primarily dictated by revenue expectations rather than marginal borrowing costs.Supplementary Evidence / Secondary Supporting Fact

Answer

Matching pairs: The prescription for targeted balance-sheet support corresponds to the Overarching Main Idea / Primary Authorial Conclusion; the critique of the traditional framework corresponds to the Intermediate Conclusion / Core Analytical Claim; the finding on credit risk premiums corresponds to Primary Supporting Evidence / Empirical Illustration; and the survey data on capital expenditure corresponds to Supplementary Evidence / Secondary Supporting Fact.
The correct alignment correctly distinguishes among levels of rhetorical hierarchy: the final normative policy proposal constitutes the primary main idea; the critique of traditional interest rate theory serves as an intermediate analytical claim; the specific finding on corporate bond spreads provides primary empirical evidence for mediation; and the survey data provides supplementary evidence regarding investment behavior.

Step-by-Step Solution

1
Analyze the passage structure to identify the author's ultimate objective.
The author moves from criticizing a traditional view to introducing balance-sheet mediation, culminating in a prescriptive policy recommendation in the final sentence.
Determining the final conclusion allows for distinguishing the central thesis from claims that merely support or lead up to it.
2
Evaluate the functional role of the claim regarding targeted balance-sheet support.
It represents the main idea and primary conclusion of the passage.
All preceding arguments and empirical observations build directly toward justifying this final recommendation.
3
Evaluate the functional role of the critique of the traditional framework.
It represents an intermediate conclusion.
It synthesizes empirical anomalies into a broader analytical point, which is then elaborated upon before leading to the main conclusion.
4
Classify the concrete observations concerning bond spreads/risk premiums and survey data.
Bond spreads serve as primary empirical evidence illustrating balance-sheet mediation, while survey data offers supplementary factual support.
Both items present specific empirical findings that serve to substantiate higher-level claims rather than state independent conclusions.

Key Concept

Distinguishing Main Idea from Supporting Evidence
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Distinguishing Main Idea from Supporting Evidence