Using Radio Buttons to Drive Form Behavior

In a form, it's often handy to ask users an up-front question that will dynamically change what fields are displayed. And, often, radio buttons would seem the ideal control for presenting the options.

The problem is that radio buttons at the top of a form are often overlooked by users, who instead jump right into entering data in the fields.

This form uses a background color to highlight the currently-selected option.  The highlighting helps draw the eye to the radio button selection, making it much less likely to be overlooked.

From: Wetpaint