</p>
</li>
<li> <p><code>moderator</code>: a factor that potentially interacts with <code>x</code>, values: low, medium, or high
</p>
</li>
<li> <p><code>x</code>
</p>
</li>
<li> <p><code>y</code>
</p>
</li></ul>



<h3>Details</h3>

<p>In the ideal scenario, only the slopes differ by moderator level. In the
&quot;floor effect&quot; scenario, there is an illusion of an interaction, even though
only main effects were simulated. In the third scenario, the slopes increase
with higher moderator values but the c