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Working memory (WM) is a key component of effective and efficient communication in typical communicators, with, potentially, even greater significance for those who benefit from augmentative communication. This study aims to explore the emergence of WM strategies in children with complex communication needs who may be reliant on aided communication strategies.

A quasi‐experimental repeated measures, multi‐factorial research design, comparing 30 children with complex communication needs (CCN) aged three to six years and 30 age‐matched typically developing peers. Picture stimuli representing verbs and adjectives in three categories: control words, long words and phonologically similar words are presented visually or silently in sequences of increasing length to establish each participant's memory span.

Articulatory rehearsal does not appear to be used as a memory strategy with verb material. With adjective material, there is limited evidence of emerging articulatory rehearsal at age six. Input modality does not influence rehearsal of either verbs or adjectives.

The study is small scale and exploratory, but there are suggestions that both groups of participants handle verb and adjective material differently to noun material.

Emerging WM skill in children with CCN needs to be considered in relation to the use of speech generating technology.

This paper contributes to understanding of the development and potential influence of WM in efficient aided communication.

This naturalistic study adapted exploratory school practice in order to support empirically‐informed decision making in the provision of augmentative and alternative communication (AAC) technologies for children with autism.

Research was conducted with three boys with autism and little speech, as part of a curricular literacy lesson. A mixed method approach, involving observational coding and staff diaries, identified how the boys used computer‐based voice output communication aids (VOCAs), also called speech generating devices (SGDs) and how the technology impacted on their communication and language. The boys were observed in initial lessons (“baseline” sessions), without the VOCA present and in sessions in which the VOCA was available (“intervention” sessions).

VOCAs were used for two main communicative purposes; naming and giving information, with aids being used primarily to support curricular, task‐related communication. Existing modes of communication continued to be used when access to the VOCA was available. In addition, all three boys showed an increase in Mean Length of Utterance (MLU) after the VOCA was introduced. The findings suggest that computer‐based VOCA technology can augment children's communicative participation in lesson activities. Specific patterns of change were also recorded in the boys' communication, suggesting individualised responses to this technology.

This paper extends the empirical base for clinical decision making by reporting the use of high tech VOCAs by school age children with autism for additional forms of communication, beyond those described elsewhere. It adds to the evidence that interventions which include access to a computer VOCA can have a positive impact on the language complexity of children with autism. It describes the potential of VOCAs to provide an enabling and inclusive technology in a classroom setting.