Religious participation, a trichotomous response in the form of a two-item Guttman scale, is affected linearly by sex and by marital status, but the effect of color is nonlinear Techniques illustrated in the paper allow the analy st to impose simultaneously the two linear constraints and a...

Krauze and Slomczynski propose a mathematical treatment of the mobility table that they claim solves “the crucial methodological problem†in mobility research. We reject their definition of this problem, and we reject their solution. Their proposed solution (1) is not oriented toward...