How Interface Design Play a big role to solve elderly and motor-impaired users

Write a report (and create a PowerPoint presentation) which addresses the following three areas: APA format!

1. Compare these two designs when there are 4 candidates and predict the relative speed of performance and error rates. Support your choice by a thoughtful argument.

 2. Describe a Participatory Design or Social Impact Statement process that might clarify the issue with elderly users. ( Demographics, California, Target users)

3. Design an experiment to help resolve the issue brought up by the expert reviewer. Assume you have substantial resources and access to subjects.