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Partial matching in the Moses illusion: response bias not sensitivity
Abstract:
Previous research has demonstrated that people have enormous difficulty in detecting distortions in such questions as, "How many animals of each kind did Moses take in the Ark?" Reder and Kusbit (1991) argued that the locus of the effect must be the existence of a partial-match process. Other research has suggested that this partial-match process operates at the word level and that, with adequate focus on the relevant word, the Moses illusion is greatly diminished. The present experimental results argue that those conclusions were based on a shift in response criterion with no concomitant change in ability to detect distortions. Furthermore, the data suggest that the matching process operates below the word level, at the level of distinctive features.
Insights
The Moses illusion, where people miss errors like "Moses" instead of "Noah" on the Ark, is not due to word-level matching. Our findings suggest this cognitive illusion operates at a deeper, feature-detection level.
Area of Science:
- Cognitive Psychology
- Human Perception
- Linguistics
Background:
- The Moses illusion demonstrates difficulty in detecting semantic distortions in questions.
- Previous research proposed a word-level partial-match process as the cause.
- Some studies suggested focusing on specific words could reduce the Moses illusion.
Purpose of the Study:
- To investigate the underlying mechanism of the Moses illusion.
- To challenge the word-level partial-match hypothesis.
- To determine if the illusion operates at a sub-word level.
Main Methods:
- Experimental design to test participants' ability to detect distortions.
- Analysis of response criteria and detection abilities.
- Focus on sub-word feature processing.
Main Results:
- Previous conclusions about the Moses illusion were based on response shifts, not improved detection.
- The data indicate no change in the ability to detect distortions with focused attention.
- Evidence suggests the matching process operates at the distinctive feature level, below word recognition.
Conclusions:
- The Moses illusion is not solely a word-level phenomenon.
- Cognitive matching processes involved in the Moses illusion occur at the distinctive feature level.
- Response criterion shifts can mask true detection abilities in cognitive tasks.