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Role: UX Researcher/ Designer
Timeline: 3 Months . Team Members: Carolina Diaz, Melissa Gutierrez, Nicole Andujar, Sharry Tong, Zhuang Qian
Client: Impossible Dream

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The Impossible Dream website is a site where users can find information about the Impossible Dream organization, how to get involved, and also allows for users to make online donations. Our team conducted a usability test to evaluate and to determine the site’s specific usability issues so we can provide recommendations that improve the overall user experience.


The Impossible Dream website raises awareness about the Impossible Dream boat—a universally accessible 60’ sailing catamaran that was designed and built for disabled and non-disabled people to enjoy. The website provides current and prospective volunteers, donors, and sponsors with information about the organization and ways to get involved. The site’s goals are to establish to a global brand,  appeal to sponsors, bring in new donors, appeal to people who are passionate about sailing  & the ocean, the healing properties of water, engage with the community, and to increase social media traffic.


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The objective of  this usability test is to find specific usability issues within the Impossible Dream website and to improve the overall experience for the user. Through our testing, we detected how target users navigated the site and the usability issues participants ran into.



Effectiveness is measured using success rate, which is  also known as the completion rate. The success rate is the percentage of users who were able to successfully complete the task.


Efficiency is referred to as time on task, this metric represents the amount of time the user spent in completing the task.


Satisfaction was measured and calculated using the “Single Ease Question (SEQ)” and “System Usability Scale (SUS).”



Due to the limitation of the time and resources, we used  a convenience sample that is different from the target user.

We had 6 participants. They are graduate level students at the University of Miami, ages 22-28, 2 males and 4 females. They are all tech savvy and spend fair amount of time on the internet on a daily basis.

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The chart on the right demonstrates the percentage of participants who completed each task successfully. Overall completion rates were high across the test tasks. The chart on the left demonstrates the average amount of time in seconds each task took the participants.

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The chart on the left demonstrates the average SEQ  score reported by participants. The table on the right shows the post study satisfaction score per participant and on average.

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Because some participants found the information architecture of the website confusing, we redesigned the site map to meet user needs. Two important findings guided our redesign.

First, multiple participants were confused to find that the Partner Sponsor page is listed under ‘Get Involved’ instead of under Donate or in a navigation item by itself. Second, some navigation options functioned both as a link and a dropdown menu item, causing confusion to some participants as well.

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After conducting the usability test, we discovered 8 positive aspects, and 26 improvement opportunities. Because many of the  usability issues detected  by participants were tied to the visual design of the site, we suggest a re-design as part of the next steps. Our prescribed re-design reflects  and implements the feedback from our participants. We believe that these  key changes will have a positive impact on the site:  1) Reducing the number of clicks it takes for users to make an online donation on the site, 2) including readily visible contact information to increase involvement and engagement  for future volunteers, donors and guests, 3) updating content on a regular basis, 4) keeping the site design consistent across pages.

See full report here