This study constitutes the beginning of a longitudinal investigation of phonological development of four children from birth to 2 years. Little variation was found in mean fundamental frequency. Duration, within-utterance range and variability did show developmental change. (RM)

The present investigation examines three hypotheses concerning the development of temporal coordination of consonant clusters in the speech of children at four age levels. Results reveal that five and seven-year-olds can be separated from older children and adults on the basis of absolute duration of consonants. (CHK)

This paper represents a partial condensation of the results of a study covering 14 months in a Russian-speaking child's phonological development. Evidence supports a theory of phonological acquisition formulated by Olmsted (1971), and offers detailed information on the child's acquisition of specific phones. (CHK)

Describes a study to determine: (1) the relationship between age and mean length of utterance measured in morphemes (MLU) in a group of normally developing two- and three-year-old chidren; (2) the standard error of MLU; (3) the relationship between MLU and age; and, (4) the ability of MLU to predict children's grammatical development. (SED)

This paper reports data for voice onset time (VOT) for /d/ and /t/, from six children at average age 3;0. Values for /d/ clearly achieve the short voicing lag category of adults, reported previously. Values for /t/, however, are much more varied, although falling within the category long voicing lag. (CHK)

Data are presented that reflect a particular strategy used by a boy from age 1;10 to 2;2 to manage certain polysyllabic words. Analysis shows that substitution was not involved, and an interpretation is made in terms of "underlying forms." Details of the strategy and its component sub-strategies are presented. (CHK)

The speech of two mothers to their infants between three and eighteen months was analyzed. Simplicity of speech was about the same at all ages, not showing abrupt change as children began to talk. It is suggested that mothers used a conversational model and changes reflect children's growing conversational ability. (CHK)

Children in grades 1-3 were asked to retell and explain a series of riddles. Ability to recall riddles was not predictive of ability to explain them. Three cognitive factors seemed to determine level of riddle competence. Implications concern the relationship of riddle competence to reading ability and metalinguistic facility. (CHK)