I am conducting an OLS for a class assignment and have an interaction between ADHD and non-delinquent peers. I have tested for the assumption of linearity and it is violated for the non-delinquent peers measure. I spoke with my professor about what to do, but it seemed to confuse me even more.

He told me that it is inappropriate to run an interaction when one has a non-linear effect. But he told me to still run the interaction with two variables that are "linear." I looked into running a log transformation on the peers measure, but there are negative values, so it is inappropriate.

Does anyone have a suggestion as to what I can do about this?

Thanks beforehand!

Steph