Survey variables can be normalized to a common metric for comparable regression coefficients

Evidence

To interpret the coefficients shown there, keep in mind that all variables were coded to range from 0 to 1, with 1 indicating (a) favorable evaluations of Reagan’s performance, (b) support for the Contras and for U.S. involvement in Central America, (c) support for interventionist foreign policy in general, (d) the view that the U.S. had grown stronger in the world, (e) belief that national economic conditions had improved over the previous year, and (f) opposition to federal aid to blacks, respectively. — John T. Jost and Jim Sidanius, Political Psychology, 1598