ISSN : 1226-9654
정신물리적 무감각(psychophysical numbing)은 위험에 처한 전체 생명의 수(준거집단의 크기)가 증가하면서 사람들이 지각하는 생명의 가치가 감소하는 현상을 말한다. 실험 1은 선행연구와는 다른 절차로 정신물리적 무감각 현상에 영향을 미치는 요인들을 재검증하였다. 의사결정자가 대안들을 경제적 관점에서 평가하도록 하였을 때 정신물리적 무감각 반응이 증가하는 결과가 나타났다. 실험 2는 대안을 두 가지 제시 양식, 즉 개별적으로 제시하는 조건 대 합동하여 제시하는 조건에서 정신물리적 무감각 반응을 비교하였다. 감정 추단법(affect heuristic)과 평가 가설(evaluability hypothesis)의 주장과는 반대로 대안들을 비교할 수 있는 합동조건에서 정신물리적 무감각 반응이 증가하였다. 정신물리적 무감각 반응을 설명하는 이론들의 문제점과 대안 이론을 논의하였다.
Psychophysical numbing refers a phenomenon in which the perceived value of saving a fixed number of lives decreases as the total number of lives at risk (“reference group size”) increases. The first experiment replicated factors affecting psychophysical numbing in a different experimental procedure than previous researches. The results showed that psychophysical numbing responding increased, when decision makers evaluated the options in the economic-focus. The second experiment examined the psychophysical numbing in two different presentation mode, namely separate versus joint presentation. In contrast to affect heuristic and evaluability hypothesis, psychophysical numbing increased in joint presentation, in which two options could be compared and analysed. The problems of present theories explaining psychophysical numbing and alternative theories were discussed.
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