Html multiple select element accessibility : <p>In our web application we have a search form which contains a field for which a user can select one or more answers from a list of possible options.  We currently use the "select" html element with the "multiple" attribute set as in the example below:</p>

<p><div class="snippet" data-lang="js" data-hide="false">
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<pre class="snippet-code-css lang-css prettyprint-override"><code>select {
  width: 150px;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;select multiple&gt;
  &lt;option value="A"&gt;Alice&lt;/option&gt;
  &lt;option value="B"&gt;Bob&lt;/option&gt;
  &lt;option value="F"&gt;Fred&lt;/option&gt;
  &lt;option value="K"&gt;Kevin&lt;/option&gt;
  &lt;option value="M"&gt;Mary&lt;/option&gt;
  &lt;option value="S"&gt;Susan&lt;/option&gt;
&lt;/select&gt;</code></pre>
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<p>Feedback from user testing has shown that this solution is confusing for users.  Multiple selection/deselection is performed by holding down the Ctrl key (on windows), however many users were unaware of this.</p>

<p>The element also does not seem to allow for easy use when using just a keyboard - this is obviously an accessibility issue.</p>

<p>Is there a "best practice", accessible way of displaying an input with multiple options to a user?</p>
