hi!

I'm testing linear and curviliear effects of one continuous IV in another continuos DV.

I've centered the IV (IVc) and squared it (IVcsq) and my results are:



B Std. Error Beta t Sig.
1st block
IVc -1,523 ,438 -,276 -3,478 ,001
2nd block
IVc -,635 ,562 -,115 -1,131 ,260
IVcsq -,669 ,272 -,250 -2,462 ,015

I'm having diffiulties interpreting these results, because there is linear effects significant at p=0.001 and a curvilinear effects significant at p<0.015.
Thus this mean that the effect is linear or curvilinear?

Thank you all for your help,

Mariana