Table 1 Laboratory warning sign effectiveness evaluation indicator System.
From: Visual communication design in laboratory safety effectiveness and optimization of warning signs
Dimension | Weight | Indicators | Measurement methods | Evaluation criteria |
|---|---|---|---|---|
Visual perception | 0.30 | Attention Capture Time | Eye-tracking (fixation time) | < 300ms: excellent; 300-500ms: good; >500ms: poor |
|  |  | Attention Holding Time | Eye-tracking (dwell time) | > 1.5s: excellent; 1.0–1.5 s: good; <1.0s: poor |
|  |  | Visual Prominence | Visibility test (distance recognition) | > 8 m: excellent; 5–8 m: good; <5 m: poor |
Information comprehension | 0.35 | Symbol Recognition Accuracy | Recognition test | > 90%: excellent; 75–90%: good; <75%: poor |
|  |  | Message Understanding | Comprehension questionnaire | > 85%: excellent; 70–85%: good; <70%: poor |
|  |  | Hazard Perception Accuracy | Risk perception test | > 85%: excellent; 70–85%: good; <70%: poor |
Memory retention | 0.15 | Short-term Recall (30 min) | Memory test | > 90%: excellent; 75–90%: good; <75%: poor |
|  |  | Long-term Recall (1 week) | Follow-up memory test | > 80%: excellent; 60–80%: good; <60%: poor |
Behavioral response | 0.20 | Compliance Rate | Simulated response scenario | > 85%: excellent; 70–85%: good; <70%: poor |
|  |  | Response Time | Reaction time measurement | < 2s: excellent; 2–4 s: good; >4s: poor |
