how to find whether grandparents are affected in the regression what is the relationship between grandparents and children what is the effect of grandparents for the interaction term in the interacted model? what is the direct effect of grandparents on the regression model how to find out if grandparents are affected by regression what is the impact of grandparents what is the relationship between grandparents and children which variable in p value is not considered a direct effect? how does interaction wipes out the effect does interaction wipe out grandparents' direct effect how to find out if grandparents are affected can grandparents be included in an interaction term in regression if an interaction term is always different than 0 will it wipe out the effect of grandparents. how to find if grandparents effect direct regression which interaction term removes the effects of grandparents what is the effect of grandparents on the child how is interaction used does interaction wipe out grandparents effect when an interaction term is used, the effect of grandparents is which interaction term wipes out the direct effect of grandparents?