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This paper will give a progress report on a randomised controlled trial which is currently underway in the Bristol area. Some of the key influencing literature will be summarised, followed by an overview of the study design. The paper will also highlight some of the methodological and practical advantages and disadvantages afforded by the service setting of the study.

Original publication




Journal article


International journal of language & communication disorders

Publication Date



33 Suppl


31 - 36


Speech & Language Therapy Research Unit, Frenchay Hospital, Bristol.


Humans, Language Development Disorders, Speech Disorders, Language Therapy, Speech Therapy, Program Evaluation, Research Design, Child, Preschool