... causation is viewed without implying the causer's volition and control of the situation ( see Caughley 1982 : 18-21 ) . The use of this variant form is not conditioned by morphological agreement . 4.8 The comparative construction The ... There are more native speakers of Sino-Tibetan languages than of any other language family in the world. Our records of these languages are among the oldest for any human language, and the amount of active research on them has multiplied in the last few decades. Now in its second edition and fully updated to include new research, The Sino-Tibetan Languages includes overview articles on individual languages, with an emphasis on the less commonly described languages, as well as descriptions and comments on the subgroups in which they occur. There are overviews of the whole family on genetic classification and language contact, syntax and morphology, and also on word order typology. There are also more detailed overview articles on the phonology, morphosyntax, and writing system of just the S