This collection of abstracts is part of a continuing series providing information on recent doctoral dissertations. The 29 titles deal with a variety of topics, including the following: (1) stop/fricative variation; (2) the acquisition of relational comparatives; (3) teachers' turn taking sanctions in primary school lessons; (4) hearing as an age related variable in language acquisition; (5) the linguistic function of simple English prepositions; (6) implicational scales and English dialectology; (7) the evolution of culture and grammar; (8) the attitudes of teachers of learning disabled students toward language usage skills in elementary schools; (9) the manipulation of concrete objects and the use of pictures in children's language production; (10) styles in conversation; (11) lexical idiosyncrasy in English; (12) a language development program for five-year-old children; (13) a contribution to the formal, computational recognition of sound change, analogic change, and dialect borrowing; (14) grammatical theory and language acquisition; and (15) the development of English linguistic thought in the sixteenth century. (FL)