Subjective ethno-linguistic vitality expresses a group's perception of its own ability to act as a distinctive collective entity in intergroup encounters. Although subjective vitality questionnaires have proved to be reliable instruments of measurement, there has been criticism that they underestimate actual vitality (see Yagmur, this issue). A…

The paper presents the results of an empirical evaluation of a mathematical model of ethnolinguistic vitality. The model adds several new factors to the set used in previous models of ethnolinguistic vitality and operationalises it in a manner that would make it easier to compare the vitality of different groups. According to the model, the…