Choice of significance levels and two types of errors
There is no difference between Pie menus and traditional pop-up menus
Type I: extra work developing software and having people learn a new idiom for no benefit
Type II: use a less efficient (but already familiar) menu
Case 1: Redesigning a traditional GUI interface
a Type II error is preferable to a Type I error , Why?
Case 2: Designing a digital mapping application where experts perform extremely frequent menu selections
a Type I error is preferable to a Type II error, Why?