Quantifying age-related differences in information processing behaviors when viewing prescription drug labels

Area of Science:

• Health communication
• Human factors engineering
• Gerontology

Background:

• Adverse drug events (ADEs) pose a significant healthcare challenge.
• Effective prescription warning labels (PWLs) can mitigate ADEs, but patient interaction with these labels is poorly understood.
• Understanding how patients, particularly older adults at higher risk for ADEs, process warning information is critical.

Purpose of the Study:

• To investigate the effectiveness of prescription warning labels (PWLs) in conveying information to young adult and older adult patients.
• To evaluate early information processing stages by tracking eye movements during interaction with prescription vials featuring PWLs.
• To assess recognition memory for PWLs and identify factors influencing recall.

Main Methods:

• Eye-tracking technology was employed to monitor participants' visual attention to prescription vials with PWLs.
• Participants included two age groups: young adults and adults aged 50 and older.
• Recognition memory tests were administered following the visual attention task.

Main Results:

• Participants frequently failed to attend to PWLs during interaction, with this deficit more pronounced in older adults.
• Older adults demonstrated poorer recognition memory for PWLs compared to younger adults.
• When memory performance was analyzed based on whether PWLs were fixated, age-related memory differences disappeared, indicating attention as the primary factor.

Conclusions:

• Attention, not memory encoding or recall ability, significantly influences age-related differences in PWL memory performance.
• Older adults' reduced attention to PWLs is a key factor in their poorer recall of warning information.
• Developing effective prescription drug labeling standards necessitates a focus on optimizing consumer attention, especially for vulnerable older populations at higher risk for ADEs.