![]() (Limited space might sometimes force you to violate this guideline, but do try to keep choices visible whenever possible.) Radio buttons are also easier to operate for users who have difficulty making precise mouse movements. Radio buttons have lower cognitive load because they make all options permanently visible so that users can easily compare them. If possible, use radio buttons rather than drop-down menus.If you can't do this, it might be better to use two radio buttons - one for having the feature on, and one for having it off - and write clear labels for each of the two cases.Write checkbox labels so that users know both what will happen if they check a particular box, and what will happen if they leave it unchecked.In other words, avoid negations such as "Don't send me more email," which would mean that the user would have to check the box in order for something not to happen. Use positive and active wording for checkbox labels, so that it's clear what will happen if the user turns on the checkbox.In the following list, for example, it's difficult to see the correct radio button to click for option four. If you must use a horizontal layout with multiple options per line, make sure to space the buttons and labels so that it's abundantly clear which choice goes with which label. Lay out your lists vertically, with one choice per line.A list of radio buttons, however, must always appear unified, so you cannot use subheads to break it up. The risk is that users might view each subgroup as a separate set of options, but this is not necessarily fatal for checkboxes - each box is an independent choice anyway. ![]() This makes the choices faster to scan and easier to understand.
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