n class="va">res1</span> <span class="op">&lt;-</span> <span class="fu">sirt</span><span class="fu">::</span><span class="fu">lavaan2mirt</span><span class="op">(</span> <span class="va">dat</span>, <span class="va">lavmodel</span>, poly.itemtype<span class="op">=</span><span class="st">"graded"</span>, technical<span class="op">=</span><span class="fu"><a href="https://rdrr.io/r/base/list.html" class="external-link">list</a></span><span class="op">(</span>NCYCLES<span class="op">=</span><span class="fl">20