SAT Reading & Writing · Rhetorical Synthesis

A student has researched the McGurk effect and compiled the following notes: - Viewing one mouth movement while hearing a different speech…

A student has researched the McGurk effect and compiled the following notes:
- Viewing one mouth movement while hearing a different speech sound can cause a person to perceive a third, different syllable entirely.
- The illusion demonstrates that the brain integrates visual and auditory information during speech perception.
- The strength of the effect varies among individuals and across different languages.
- Knowing about the illusion in advance does not always prevent a person from experiencing it.
- The quality of the audio and visual signal can change how strongly the two sources of information are weighted together.
- Not every mismatch between what is seen and heard produces the classic illusory perception.

The student wants to emphasize that conscious awareness of the illusion does not eliminate its effect. Which choice most effectively uses relevant information from the notes to accomplish this goal?

Answer and explanation

Answer: B: Knowing about the illusion in advance does not always prevent a person from experiencing it, showing that conscious awareness alone does not override the underlying perceptual integration.

The goal specifically requires addressing the relationship between awareness and the illusion's persistence, and B is the only choice that speaks directly to that relationship, naming both the awareness and its limited effect on the illusion. A describes the basic phenomenon without addressing awareness. C and D each name a real variation in the effect without addressing whether conscious knowledge changes anything.

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