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The difference in the warning effect of different warning signs
Wuji Lin1,2,3,4, Jingyuan Lin5, Yang Yang1,2,3,4
1Key Laboratory of Brain, Cognition and Education Sciences(South China Normal University), Ministry of Education, China.
International Journal of Occupational Safety and Ergonomics : JOSE
|October 24, 2020
Summary
Image-based warning signs are most effective in emergencies, outperforming text or combined formats. This research highlights the importance of visual content for quick responses in dangerous situations.
Area of Science:
- Human Factors
- Cognitive Psychology
- Safety Science
Background:
- Warning signs are crucial for safety in hazardous environments.
- Prior research primarily examined physical attributes, neglecting the impact of content type.
- Understanding the efficacy of different warning sign designs is essential.
Purpose of the Study:
- To investigate the warning effectiveness of different types of warning signs.
- To assess how warning sign content (image vs. text vs. combination) influences cognitive processing and task performance.
- To provide evidence-based recommendations for warning sign design in critical situations.
Main Methods:
- Experiment 1 utilized the oddball and go/no-go paradigms to evaluate warning effects.
- Experiment 2 employed a dual-task paradigm to measure the impact on secondary task performance.
- Participants' responses and performance were recorded under various warning sign conditions.
Main Results:
- Warning signs with images demonstrated the highest effectiveness, followed by image-text combinations.
- Text-only warning signs exhibited the least effective warning impact.
- Different warning sign types significantly affected secondary task performance, indicating varying cognitive loads.
Conclusions:
- Visual content (images) facilitates quicker processing and better warning effects compared to text.
- Simple, graphic-based warning signs are recommended for situations demanding rapid responses.
- Complex scenarios may benefit from a combination of images and text for enhanced comprehension and safety.
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