 of class
    <code><a href="merMod-class.html">lmerMod</a></code>, to be refit with a new response.</p></dd>

  <dt id="arg-newresp">newresp<a class="anchor" aria-label="anchor" href="#arg-newresp"></a></dt>
<dd><p>an (optional) numeric vector providing the new
    response, of the same length as the original response (see
    <code>Details</code> for information on NA handling).  May also be a data
    frame with a single numeric column, e.g. as produced by
    <code>simulate(object)</code>.</p></dd>

  <