ISSN : 1226-9654
특징 혹은 차원 자극벌(Garner, 1978)이 복합 자극의 전역 혹은 국지 수준으로의 주의 전환 양상에 미치는 영향을 조사하기 위해 두 실험이 수행되었다. 실험 1에서, 시행간에 걸쳐 주의 받은 수준의 전환에 대한 분석은 특징 자극벌에서는 수준 전환 효과를 보였으나, 차원 자극벌에서는 그런 효과를 발견하지 못하였다. 실험 2에서, 복합 자극의 두 수준의 정체를 순차적으로 제시함으로써 수준간 주의 전환이 강제되었다. 특징 자극벌에서 국지 수준으로의 주의 전환이 전역 수준으로의 주의 전환보다 더 쉬웠다. 그러나, 차원 자극벌에서는 전역 수준으로의 전환이 국지 수준으로의 전환보다 더 쉬웠으며, 각 수준에 대한 주의가 신속하고 안정적인 것으로 보였다. 이 결과는, 전역 수준의 주의 및 지각이 선행함을 주장하는, 전역 선행성(Navon, 1977)이 일반적 규칙이 아니며 자극 구조가 선행성 연구에서 중요한 요인으로 고려되어야 함을 시사한다. 수준 준비성 효과(Ward, 1982) 및 공간 주의 전환의 단계들(Posner, 1988)이 종합논의에서 고찰되었다.
Two experiments examined the effect of stimulus set, feature or dimension (Garner, 1978), on modes of attention shift to global and local level of a compound stimulus. In Experiment 1, an analysis of inter-trial transitions of attended levels showed a level shift effect in the feature set compared to no such effect in the dimension set. In Experiment 2, attention shift between levels of the compound stimulus was forced by presenting identities of the two levels in sequence. Attention shift to the local was easier in the feature set than that to the global. In the dimension set, however, shift to the global was easier than shift to the local, and giving attention to either level appeared to be fast and stable. These results imply global precedence (Navon, 1977) is not a general rule and stimulus structure should be considered as an important factor in the study of precedence. The level‐readiness effect (Ward, 1982) and the stages of spatial attention shift (Posner, 1988) were considered in the general discussion.
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