心理学研究
Online ISSN : 1884-1082
Print ISSN : 0021-5236
凶器の視覚的特徴が目撃者の認知に及ぼす影響
大上 渉箱田 裕司大沼 夏子
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ジャーナル フリー

2006 年 77 巻 5 号 p. 443-451

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This study examines the hypothesis that a knife attracts witnesses' attention because of its pointed shape. In Experiment 1, 60 participants were shown a picture of a kitchen scene in which a woman held one of three items: a pointed knife, a square-shaped knife, or a detergent spray bottle. The weapon focus effect was measured by the recognition of details related to the object. Recognition information was significantly greater in the pointed knife condition than in the other conditions. In Experiment 2, 40 participants viewed slides that depicted the assembling of a plastic model using either pointed tweezers or square-shaped tweezers. As in Experiment 1, participants remembered more details in the pointed tweezers condition than the other condition. Both results show that visual features of a weapon affect witnesses' memory and suggest that the pointed shape of knife is a factor that attracts witnesses' attention.

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© 公益社団法人 日本心理学会
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