Harold Gene Zucker
Harold Gene Zucker. 1976. The Standardized Diffusion Test. Cross-Cultural Research 11(2): 71-102. Abstract: An accurate and flexible method for measuring cultural diffusion is presented. When the diffusion of pairs of traits is measured, the method constitutes a solution to Galton's problem. Application of the method to data on the association of patrilocal residence with patrilineal descent indicates that the association is based on diffusion rather than function.