To top it off, most of the author's complaints about drop-down menus apply doubly so to radio buttons. Selecting with the keyboard? My browser lets me select a

To top it off, most of the author's complaints about drop-down menus apply doubly so to radio buttons. Selecting with the keyboard? My browser lets me select a menu, type a letter, and jump to the first entry starting with that letter. I've never seen that work with radio buttons (though I admit I haven't tried it recently). Selecting from a long list on a phone? Selecting a menu on my phone gives me a popup menu that scrolls independently of the rest of the page. Selecting from a list of radio buttons requires a scrolling action that changes my location in the page. If I want to return to a field above the list of radio buttons, I have to scroll back. My non-expert advice: Never use radio buttons for a set of more options than you can guarantee will fit on the screen simultaneously. If your UI has any mobile users, that probably limits you to four options, maybe less.