Radio Buttons, Check Boxes, and List Boxes

Deciding whether to use a radio button, a check box, or a drop-down list box depends on a number of items, such as listed next:

How much window space is available
Whether the user will be primarily using the keyboard or some point-and-click device for data entry
How frequently the item is accessed

Situation	Radio Button	Check Box	List Box
2-6 static choices	X	X
7-12 static choices		X
13 or more dynamic choices			X
Yes/No, True/False, On/Off		X
Many choices, limited space on window			X