색상 변별 과제를 이용한 수 의미 처리의 자동성 및 수-공간 연합의 맥락 의존성 검증

초록

The Spatial-Numerical Association Response Codes (SNARC) effect refers to the phenomenon in which smaller vs. larger numbers are responded to more efficiently in the left vs. right side of space, respectively. The SNARC effect is studied as an important phenomenon that reflects the nature of numerical representations. The present study examined whether the SNARC effect is observed during color judgement of numbers in order to verify whether number magnitude is automatically processed. In addition, two blocks of experiments were administered using a different range of numbers (2-9 for block 1 and 1-50 for block 2) in order to verify whether the pattern of the SNARC effect depends on the number range within an experimental block. As a result, the left hand responded faster to numbers 6-9 in block 1, but the right hand responded faster to the same numbers in block 2. This result confirms that the SNARC effect occurs automatically in a context-dependent pattern even during color judgment which does not require processing of number magnitude. The present study implies that the relative magnitude of a number is processed automatically with reference to the current experimental context.

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