The document summarizes a study that evaluated the usability of multi-layered interfaces versus single interfaces for mobile applications among older and younger adults. For older adults, the study found they preferred multi-layered interfaces for learning how to use the applications as it provided a gradual learning curve. However, for long-term use older adults had no strong preference between multi-layered and single interfaces. Younger adults showed mixed preferences for both learning and long-term use.

1. Multi-Layered Interfaces for Mobile Applications for Older Adults: Qualitative Analysis By Justine Yang CPSC 448B April 28, 2009

8. Study Design

16. Results and Analysis

28. Results and Analysis Age-related differences in Learning : Senior: ML interface v.s. Young: Mixed preferences Seniors take more steps, difference between NL and ML is larger Seniors take more time, difference between NL and ML is larger

34. Results and Analysis Possible Cause #2: Past Experience Senior : Less Experience complex, need guidance Takes more steps and longer time

38. Conclusion

41. Questions and Answer