Nine Principles for Error Prevention to Avert Safety Problems at Customer Usage Stage

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  • ユーザーの使用段階でのトラブルを未然防止するエラープルーフ化の方法
  • ユーザー ノ シヨウ ダンカイ デ ノ トラブル オ ミゼン ボウシ スル エラープルーフカ ノ ホウホウ

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Abstract

Nine principles for error-proof product design have been developed for averting safety problems at the customer usage stage. In addition, four phases for information processing (i.e., perception, recognition, decision making, and action implementation) were formulated on the basis of the skill, rule, knowledge (SRK) model by Rasmussen and the information processing model for human behavior by Card, Moran, and Newell. The nine principles are based on three viewpoints: i) prevention of errors, ii) early detection of errors, iii) mitigation of the effects of errors. The principles for viewpoint i) are ① elimination, ② alternation, ③ complication, ④ facilitation, and ⑤ concentration of attention. Those for viewpoint ii) are ⑥ normality detection and ⑦ abnormality detection. Those for viewpoint iii) are ⑧ effect absorption and ⑨ effect mitigation. These principles were examined both conceptually and empirically. Their application prevented safety problems at the customer usage stage in 93 out of 100 cases.

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