Crowded environments reduce spatial memory in older but not younger adults

Area of Science:

• Cognitive Psychology
• Neuroscience of Aging
• Human-Computer Interaction

Background:

• Age-related decline in spatial abilities is well-documented.
• The impact of task-irrelevant stimuli on older adults' spatial cognition remains unclear.
• Real-world environments often contain dynamic, distracting elements.

Purpose of the Study:

• To investigate how task-irrelevant stimuli, specifically moving crowds, affect spatial learning and memory in older adults.
• To compare the effects of human pedestrian crowds versus object crowds on spatial memory.
• To determine if age differences exist in attentional capture by crowds during spatial learning.

Main Methods:

• Participants learned routes and landmarks in virtual environments with and without moving crowds (human pedestrians or objects).
• Spatial memory was assessed using route direction, intersection direction, and landmark sequence tasks.
• Performance was compared between older and younger adults across different conditions (crowded vs. empty environments).

Main Results:

• Older adults performed worse than younger adults on all spatial memory tasks.
• The presence of human pedestrian crowds during learning significantly impaired spatial task performance in older adults, but not younger adults.
• Object crowds and landmark sequence tasks did not show age-related performance costs.

Conclusions:

• Moving crowds of human pedestrians selectively capture older adults' attention during spatial learning.
• This attentional capture leads to a performance cost in spatial memory tasks for older adults.
• Findings highlight specific challenges in real-world environments for older adults' spatial cognition.