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In a study on human perception, a researcher uses a standard ruler to measure the actual length of lines in an optical illusion instead of relying only on the participants' visual estimates. Explain how this methodological choice addresses the limitation of empiricism illustrated by visual illusions.
Question: In a study on human perception, a researcher uses a standard ruler to measure the actual length of lines in an optical illusion instead of relying only on the participants' visual estimates. Explain how this methodological choice addresses the limitation of empiricism illustrated by visual illusions.
Sample answer: By using a physical tool like a ruler rather than relying solely on visual estimates, the researcher bypasses the vulnerability of human sensory perception to being tricked by optical illusions. This addresses the limitation of empiricism by supplementing subjective direct observation with an objective measurement tool to ensure accurate knowledge.
Key points:
- Visual estimates are sensory observations that can be deceived by optical illusions.
- A ruler provides an objective, physical measurement independent of visual bias or illusion.
- This choice shows how researchers supplement basic empiricism with systematic measurement tools to prevent errors.
Rubric: The answer should explain that using a ruler provides an objective standard that is not subject to visual deception, thereby overcoming the limitation that direct sensory observation alone can be tricked.
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Research Methods in Psychology - 4th American Edition @ KPU
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