One-Way Analysis    Targeting    Two-Way Analysis    Regression

Now that the interaction variable is created, place all three variables logirr99, logcult, and intculir into the independent box in the linear regression routine.  Foodsuff should remain in the dependent variable box.

The SPSS output is as follows:

Interpretation:
We can see that the interaction term intculir is significant.  Recall that logcult was not significant when in the equation alone or when entered with logirr99.  Here the variable does not have an significant effect on the outcome.