Ralf W Schlosser

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UNLABELLED Evaluation of client progress is an important topic in communicative disorders research and clinical literature. Goal attainment scaling (GAS) is a technique for evaluating individual progress toward goals. Despite recognition of GAS as a clinical-outcome assessment technique in other clinical professions, the current debate on measuring client(More)
Students with developmental disabilities and limited or no functional speech often use speech-generating devices. While the speech-output function of such devices is considered to have potential advantages, it is unclear whether the length of synthetic speech output influences augmented communication and natural speech production. To this end, we describe a(More)
The concept of evidence-based practice (EBP) is omnipresent in medicine and allied health care and is gradually gaining a foothold in rehabilitation and disability as well (NCDDR, 2006). EBP is defined as the integration of best and current research evidence and clinical/educational expertise with relevant stakeholder perspectives to inform decisions(More)
The effects of auditory stimuli in the form of synthetic speech output on the learning of graphic symbols were evaluated. Three adults with severe to profound mental retardation and communication impairments were taught to point to lexigrams when presented with words under two conditions. In the first condition, participants used a voice output(More)
The effects of speech output and orthographic feedback on spelling performance were evaluated in this preliminary study. A nonspeaking student with autism was taught to spell words under three feedback conditions using a voice output communication aid. In the auditoryvisual condition, the participant received speech output and orthographic feedback. In the(More)
Blissymbolics is a graphic symbol system used by individuals with little or no functional speech. The purpose of this study was to determine the effects of initial teaching of semantic elements on compound Blissymbol acquisition, retention, and generalization in a story-telling context. The subjects included 40 preschool children with normal cognitive(More)
In this systematic replication of a previous study (R. W. Schlosser, D. M. Blischak, P. J. Belfiore, C. Bartley, and N. Barnett, 1998), the effects of speech and print feedback on spelling performance were evaluated. Four children with autism and no functional speech were taught to spell words with a speech-generating device under 3 feedback conditions. In(More)
Systematic reviews have become increasingly popular across the allied health, education, and disability and rehabilitation fields. Unlike traditional narrative reviews, systematic reviews aim to minimize bias in locating, selecting, coding, and aggregating individual studies. This rigor in minimizing bias is what makes these reviews systematic. In a(More)
OBJECTIVE To assess undergraduates' perceptions of three augmentative and alternative communication (AAC) modes. METHOD We showed 104 undergraduates a video clip of a person using each of the three AAC modes and asked them to rate each option in terms of perceived (a) intelligibility, (b) ease of acquisition, (c) effectiveness/acceptability, and (d)(More)
BACKGROUND Children with neurodevelopmental disorders often present with little or no speech. Augmentative and alternative communication (AAC) aims to promote functional communication using non-speech modes, but it might also influence natural speech production. METHOD To investigate this possibility, we provided AAC intervention to two boys with(More)