Adult age differences in information foraging in an interactive reading environment

Area of Science:

• Cognitive Psychology
• Educational Psychology
• Human Development

Background:

• Natural reading environments present multiple information sources with varying richness.
• Readers adapt by selecting resources and allocating study time, but face costs like attention disruption when switching sources.

Purpose of the Study:

• Investigate age differences in adapting to information richness and switching costs during learning.
• Examine how environmental factors influence source selection and study time allocation.

Main Methods:

• A novel reading paradigm was used to simulate natural learning environments.
• Manipulated information richness (sentence elaboration) and switching costs (time delay).
• Measured participants' source selection and study time allocation.

Main Results:

• Participants progressed from less to more informative texts, aligning with ecological principles.
• Increased switching costs promoted allocation of effort to easier materials and sustained reading.
• Higher switching costs improved immediate and delayed memory recall.
• Older adults exhibited greater sensitivity to switching costs, eliminating age-related recall differences in high-cost conditions.

Conclusions:

• The ability to adapt learning strategies to environmental demands is preserved with age.
• An ecological reading paradigm supports self-regulation and performance improvement.
• Environmental constraints, like switching costs, can enhance memory and mitigate age-related declines.