Related Experiment Videos
Safety closures after fifteen years.
Veterinary and Human Toxicology
|January 1, 1984
Summary
Many adults struggle with child-resistant closures (CRCs). Training improved the use of "arrow" CRCs for all adults, but visibility issues persisted for older adults.
Area of Science:
- Gerontology
- Human Factors Engineering
- Pharmacology
Background:
- Child-resistant closures (CRCs) are frequently difficult for adults to use.
- Pharmacists are encouraged to improve patient instruction on CRC operation.
- Previous studies indicate challenges with CRC usability across different adult demographics.
Purpose of the Study:
- To evaluate the usability of CRCs in different adult age groups.
- To determine the effectiveness of training on CRC operation.
- To identify specific design features that impact CRC usability.
Main Methods:
- A comparative study involving a random sample of adults (AC) and three "Golden Age" (GA) groups.
- Measurement of time taken to operate CRCs.
- Assessment of the impact of training on CRC operation for both palm/turn and "arrow" CRCs.
Main Results:
- No significant difference in palm/turn CRC operation time between AC and GA, or trained (T) and untrained (UT) groups.
- Significant improvement (p < .01) in "arrow" CRC operation for trained vs. untrained groups across all comparisons.
- Older adults experienced difficulty with "arrow" CRCs due to poor visibility of directional cues, though they could operate them one-handed and preferred this type.
Conclusions:
- Training significantly enhances the usability of "arrow" CRCs, but does not overcome visibility issues for older adults.
- Physical limitations, such as vision impairment, present a barrier to CRC use that training cannot fully address.
- Improving the visibility of characters and design elements on CRCs would offer greater utility than training alone.