Study examined speech complexity among 22 sets of parents and their school-age children during two time periods approximately one year apart. Parents and children were videotaped while completing a block design task and their conversations were transcribed. Speech patterns were found to differ at the two times. (Author/BN)

Children who learn to speak at an early age have mothers whose basic mode of disciplining is verbal. Charts; bibliography. (AF)

Six mentally retarded children were read to individually by an adult reader over a period of six weeks. Verbal interaction between the adult and each child was examined under two story presentation procedures. (MS)

Examined the effect over time of the use of sign language in a two-year period, including preschool and ending with kindergarten, on hearing children's language development. Found vocabulary gains, no evidence of memory decay over time, and positive evidence for inclusion of sign language instruction in early childhood education. (SD)