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Difficulty: MediumArgument Analysis and Evaluating Claims

Cognitive scientists studying bilingual language processing have long debated whether bilingual individuals maintain two distinct lexical access networks or a single, integrated mental lexicon. A recent experiment observed that bilingual subjects naming pictures in their second language experienced delayed response times whenever the target word shared phonological neighbors with high-frequency words in their native language—even when the experiment was conducted entirely within a second-language context. Researchers concluded from this delay that lexical activation during language production is fundamentally non-selective, meaning that words from both languages are automatically activated and compete for selection regardless of the speaker's communicative intent.

Which of the following, if true, would most seriously weaken the researchers' conclusion?

  1. The observed response delays were eliminated when participants completed a brief task designed to heighten executive control immediately prior to picture naming.Answer
  2. B
    Neuroimaging revealed increased activity in brain regions associated with conflict monitoring whenever target words shared sound patterns with native-language words.
  3. C
    Monolingual speakers perform picture-naming tasks with greater average speed than bilingual speakers across a wide variety of testing environments.
  4. D
    Bilingual speakers frequently alternate between both languages when conversing casually in informal, multilingual social settings.
  5. E
    The degree of phonological similarity between native and second-language vocabulary correlates positively with the length of time spent residing in a bilingual region.

Answer

The conclusion is weakened by evidence showing that the response delays disappear when executive control is heightened, demonstrating that parallel activation is not an automatic or fundamentally non-selective feature of bilingual language production.
The researchers conclude that lexical activation in bilinguals is fundamentally non-selective and automatic. The correct option demonstrates that when cognitive executive control is heightened, the cross-language interference disappears entirely. This proves that cross-language activation is subject to cognitive control mechanisms and is not an invariant or fundamentally automatic process, directly weakening the researchers' claim.

Step-by-Step Solution

1
Identify the main conclusion and supporting premises of the passage.
Premise: Bilinguals naming pictures in L2 showed delayed response times when L2 words had phonological neighbors in L1. Conclusion: Lexical activation during production is fundamentally non-selective and automatic across both languages.
Evaluating an argument requires isolating the claim being tested and the specific evidence supporting it.
2
Determine what logic would weaken the conclusion.
To weaken the argument, we must show that parallel activation is not an inevitable or automatic outcome, or offer an alternative explanation for the delay that does not imply non-selective retrieval.
A valid weakener directly undermines the connection between the experimental result and the broad theoretical claim.
3
Evaluate the choices to find the option that undermines the claim of automatic, non-selective activation.
Finding that priming executive control eliminates the response delay shows that parallel activation is controllable and context-dependent, directly countering the claim that activation is fundamentally non-selective.
If executive control can prevent cross-language activation, the process cannot be labeled fundamentally automatic or non-selective.

Key Concept

Weaken an Argument / Evaluating Claims
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Topics

Argument Analysis and Evaluating Claims

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