“…The pattern suggested by these attempts to specify the Davis-Moore theory and operationalize its concepts is that the strongest support for the theory comes from those tests using structural measures of the variables (Svalastoga, 1959;Abrahamson, 1973;with reservations, Broom and Cushing, 1977). Tests using perceptual measures seem to refute it (Lopreato and Lewis, 1963;Land, 1970; Grandjean and Bean, 1975). Because the perceptual variables are not direct measures of dimensions of the stratification Functional Theory of Strati3cation 417 structure, however, they do not permit a true test of the functional theory of stratification as formulated by Davis and Moore.…”