Dear Freesurfers,<br><br>I&#39;m exploring the relationship among cortical thickness, aging and some cognitive variables in a sample of healthy elders, and I want to test this relationship regardless sex and years of education.<br>
<br>I think is easy to make contrasts to explore separately the correlation between age (or a cognitive measure) and thickness. However I am wondering if its possible to know the areas in which both correlations coincide. <br>
<br>Does it make sense to use a contrast like this for such purpose?<br><br>0 0 0.5 0.5 0 0 0.5 0.5 <br>sex  age    edu   cognitive measure <br><br>Many thanks in advance for your answer <br><br>-- <br>Gonzalo Sánchez Benavides<br>