User Experience Study – Sean Van Tyne

Determining the Right Sample Size for Experience Design Evaluation

November 25, 2024May 25, 2014 by Sean Van Tyne

Finding the right sample size is a tradeoff between the number of participants in the study and the ability to detect problems. The larger the sample size, the more problems that get uncovered. There is however a diminishing return as fewer new problems get uncovered with each additional user. And not all problems uniformly affect … Read more

Skinit Customizer Increases Conversion by 350%

April 17, 2011 by Sean Van Tyne

Overview Skinit is the global leader in consumer electronic device personalization. In 2007 Skinit was preparing to enhance the previously successful Photo Uploader, a web-based application that allows consumers to upload their own photos and manipulate designs for their personal electronic devices. Darryl Kuhn, Skinit CTO, reached out to me to help with the redesign … Read more