Down-arrow changes answer selections rather than scrolling

[davidwagner]

Suppose I answer a multiple choice question. Then I try to scroll down using the down-arrow on my keyboard. This doesn't scroll the page; it changes my multiple-choice selection.

I discovered this had invisibly changed my selection on a question. I answered a multiple-choice question, scrolled down with the "page-down" key (moving the question I answered off the screen), then pressed the "down-arrow" key to scroll down a tiny bit more, and the screen scrolled down a tiny bit more. What I didn't realize is that my answer to the previous question had also been changed by the down-arrow -- in addition to scrolling the screen, it also invisibly changed my answer -- and I could not see the change, since it happened off-screen, so I had no way to detect it.

This is bad, because it can cause a student to lose points on a question they answered correctly, without realizing it.